### ARAKIDA Hideyoshi

General Educations | Associate Professor |

ProfileBorn in April, 1973. Ninohe City, Iwate Prefecture. My research interests include celestial mechanics, astrometry, lunar and planetary ephemerides, general relativity and verification of gravitational theory, accurate modeling of light propagation in gravitational fields (light bending, time delay of radar echoes, etc.), dark energy/cosmological constant problems in cosmology, and fast and accurate numerical integration and computation methods. I am currently working on a theoretical research to solve the dark energy/cosmological constant problem in terms of light bending and gravitational lensing using the Gauss-Bonnet theorem, and I am also investigating the possibility of solving the accelerating expansion problem in the Universe by generalizing the theory of gravity using Finsler geometry. I am also interested in the general relativistic three-body problem (Kozai-Lidov mechanism, Sitnikov problem, and the motion of S0-Stars at the Galactic center). Asteroid 1996 VP7 was named after my name (7502) Arakida. http://minorplanetcenter.net/db_search/show_object?object_id=7502

### Degree

### Research Keyword

- Educational support activities for affected areas using ICT
- Physics and Astronomy Education
- Development of a model for cosmic ray propagation and study of the structure of galactic magnetic fields using cosmic rays
- Application of ICT in education
- Development of a teaching and learning support environment using CMS/LMS and verification of its effectiveness
- Science education
- Development of fast and accurate numerical integration methods and numerical computation techniques in celestial mechanics
- Numerical calculations
- Investigating the problem of secular change in astronomical units from the viewpoint of verification of the theory of gravity.
- General Relativity
- Contribution of the cosmological constant to the bending of light and its application to the gravitational lensing effect to reveal the dark energy problem
- 宇宙定数による光の湾曲の効果と重力レンズ効果への応用によるダークエネルギー問題の解明
- Development of accurate signal propagation model and its calculation method in gravitational field
- Astrophysics
- Theoretical and numerical study of the general relativistic three-body problem
- Theoretical and numerical studies of the long-term dynamics of solar system bodies
- Fundamental astronomy
- ・ICTを活用した被災地教育支援活動
- ・CMS/LMS を用いた教育・学習支援
- ・天体力学にほける高速・高精度計算技法の開発
- ・宇宙定数の光の湾曲・重力レンズ効果への影響
- ・重力場中での信号伝播モデルの高精度化・計算技法の開発
- 太陽系天体のダイナミクスの理論的・数値的研究

### Field Of Study

- Humanities & social sciences, Educational technology, Educational Technology
- Humanities & social sciences, Science education, Science Education
- Informatics, Computational science
- Informatics, High-performance computing
- Natural sciences, Astronomy, Astronomy
- Natural sciences, Theoretical studies related to particle-, nuclear-, cosmic ray and astro-physics, Elementary Particle/Atomic Nucleus/Cosmic Ray/Space Physics

### Career

- Apr. 2013 - Present

Associate professor, Mathematics Department, General Educations, Faculty of Engineering, Nihon University - Apr. 2011 - Mar. 2013

Specially Appointed Associate Professor Science Education Course, Graduate School of Education, Iwate University - Apr. 2003 - Mar. 2012

Part-time lecturer, Meisei Univsesity - Apr. 2006 - Mar. 2011

Research Associate, Advanced Research Institute for Education and Integrated Science, Waseda University - Sep. 2009 - Sep. 2009

Visiting Researcher, Institute of Applied Astronomy, Russian Academy of Sciences - Apr. 2005 - Mar. 2006

Project Research Staff, Astronomical Data Analysis Center, National Astronomical Observatory of Japan - Aug. 2003 - Mar. 2005

Postdoctoral Researcher, Public Relations Center, National Astronomical Observatory of Japan

### Educational Background

- Apr. 1999 - Mar. 2002

The Graduate University for Advanced Studies, Graduate School, Division of Mathematical and Physical Science, Astronomy - Apr. 1997 - Mar. 1999

Hirosaki University, Graduate School, Division of Natural Science, Physics - Apr. 1993 - Mar. 1997

Yamanashi University, Faculty of Education, Integrated arts and sciences

### Member History

- Jul. 2022 - Jun. 2024

Representative Member of the Tohoku Branch, Japanese Society for Education and Popularization of Astronomy, - Jul. 2020 - Jun. 2022

Representative Member of the Tohoku Branch, Japanese Society for Education and Popularization of Astronomy, - Jul. 2018 - Jun. 2020

Representative Member of the Tohoku Branch, Japanese Society for Education and Popularization of Astronomy - Apr. 2016 - Mar. 2018

Special Researchers and Review Board, Committee Members, Japan Society for the Promotion of Science

### Paper

- ★Report on the Tohoku Branch Meeting of the Japanese Society for the Education and Popularization of Astronomy, 2022 Astronomy shared by all, astronomy supported by all - New ways to relate astronomy to society

Hideyoshi ARAKIDA; Rie Sakuma

Astronomy Education, May 2023, Refereed, Not invited

Lead - ★The optical geometry definition of the total deflection angle of a light ray in curved spacetime

H. Arakida

Journal of Cosmology and Astroparticle Physics, Aug. 2021, Refereed, Not invited

Lead - ★General Relativistic Aberration Equation and,Measurable Angle of Light Ray in Kerr–de Sitter Spacetime

Hideyoshi Arakida

Universe, Jun. 2021, Refereed, Invited

Lead - ★Report on the 2020 Tohoku Branch Meeting of the Japanese Society for Education and Popularization of Astronomy -- From the Past to Hayabusa2 and Beyond --

Junya TERAZONO; Hideyoshi ARAKIDA

Astronomy Education, May 2021, Refereed, Invited

Last - ★General Relativistic Aberration Equation and Measurable Angle of Light Ray in Kerr Spacetime

Hideyoshi ARAKIDA

International Journal of Modern Physics D, Apr. 2021, Refereed, Not invited

Lead - ★Effect of the cosmological constant on light deflection: time transfer function approach

H. Arakida

Universe special issue "100 Years of Chronogeometrodynamics: the Status of the Einstein's Theory of Gravitation in Its Centennial Year", Mar. 2016, Refereed, Not invited

Lead - ★Construction of an ICT Educational Environment in the Faculty of Education

Shoshi INOUE; Yoichi MIYAGAWA; Kouji YAMASAKI; Yoshinori NAKAMURA; Toshiyuki NAGOSHI; Hideyoshi ARAKIDA; Susumu YAMAMOTO; Masao TACHIBANA; Hiroaki TSUKANO; OOKAWARA Kiyoshi; Natsuki IZUMIDATE; Yasuyuki KIKAWADA; Yuki SAKAMOTO and Kazusi SATO

Journal of Clinical Research Center for Child Development and Educational Practice, Mar. 2013, Refereed, Not invited - ★Meteorological changes in Morioka City during the solar eclipse of May 21, recorded at the Iwate University "School Meteorological Observatory".

H. Arakida; T. Nagoshi

Astronomy Education, Jul. 2012, Refereed, Not invited

Lead - ★Effect of Inhomogeneity of the Universe on a Gravitationally Bound Local System: A No-Go Result for Explaining the Secular Increase in the Astronomical Unit

Hideyoshi Arakida

JOURNAL OF ASTROPHYSICS AND ASTRONOMY, Jun. 2012, Refereed, Not invited - ★Effect of cosmological constant on light deflection

H. Arakida

Proceedings of the 21st Workshop on General Relativity and Gravitation in Japan, May 2012, Not refereed, Not invited

Lead - ★Application of time transfer function to McVittie spacetime: gravitational time delay and secular increase in astronomical unit

Hideyoshi Arakida

GENERAL RELATIVITY AND GRAVITATION, Aug. 2011, Refereed, Not invited - ★Light propagation in time-dependent gravitational field

H. Arakida

Proceedings of the 20th Workshop on General Relativity and Gravitation in Japan, Jun. 2011, Not refereed, Not invited

Lead - ★Cosmological Influence on Gravitationally Bound Local System: Case of Lemaitre-Tolman-Bondi Spacetime and its Application to Secular Increase of Astronomical Unit

H. Arakida

Proceedings of the 19th Workshop on General Relativity and Gravitation in Japan, Jun. 2010, Not refereed, Not invited

Lead - ★Secular Variation of Earth-Inner Planet Distance : New Problem from Precise Positional Observation in Solar System

H. Arakida; T. Fukushima

The Nihon Butsuri Gakkaishi (Butsuri), Jul. 2008, Refereed, Invited

Lead - ★10+2 Years of the "Ippon Kako Kai"

S. Nitta; H. Arakida

The Astronomical Herald, Nov. 2007, Refereed, Not invited - ★Apollo Asteroids 1566 Icarus and 2007 MK6: Icarus Family Members?

K. Ohtsuka; H. Arakida; T. Ito; T. Kasuga; J. Watanabe; D. Kinoshita; T. Sekiguchi; D. J. Asher; S. Nakano

The Astrophysical Journal, Oct. 2007, Refereed, Not invited

Corresponding - ★Apollo asteroid 2005 UD: split nucleus of (3200) Phaethon?

K. Ohtsuka; T. Sekiguchi; D. Kinoshita; J. Watanabe; T. Ito; H. Arakida; T. Kasuga

Astronomy and Astrophysics, May 2006, Refereed, Not invited

Corresponding - ★Error growth of the KS regularized orbital motion

H. Arakida; T. Fukushima

Highlights of Astronomy, Sep. 2002, Not refereed, Not invited

Lead - ★Orbital stability of Lagrange equilibrium point of Sun and Earth-Moon barycenter system

H. Arakida; T. Fukushima

Proceedings of the 33nd Symposium on Celestial Mechanics, Oct. 2001, Not refereed, Not invited

Lead - ★Long term integration error of Kustaanheimo-Stiefel regularized orbital motion

H. Arakida; T. Fukushima

国立天文台年次報告, Sep. 2001, Not refereed, Not invited

Lead - ★Long term integration error of KS regularized orbital motion

H. Arakida; T. Fukushima

Proceedings of the 32nd Symposium on Celestial Mechanics, Oct. 2000, Not refereed, Not invited

Lead - Light deflection and Gauss–Bonnet theorem: definition of total deflection angle and its applications

Hideyoshi Arakida

General Relativity and Gravitation, May 2018, Refereed, Not invited - General Relativistic Sitnikov 3-Body Problem

H. Arakida

Proceedings of the 23rd Workshop on General Relativity and Gravitation in Japan, Jan. 2014, Not refereed, Not invited

Lead - Effect of the cosmological constant on the bending of light and the cosmological lens equation

H. Arakida; M. Kasai

Proceedings of the 22nd Workshop on General Relativity and Gravitation in Japan, Jun. 2013, Not refereed, Not invited

Lead - Note on the Perihelion/Periastron Advance Due to Cosmological Constant

Hideyoshi Arakida

INTERNATIONAL JOURNAL OF THEORETICAL PHYSICS, May 2013, Refereed, Not invited - Effect of the cosmological constant on the bending of light and the cosmological lens equation

Hideyoshi Arakida; Masumi Kasai

PHYSICAL REVIEW D, Jan. 2012, Refereed, Not invited - DIFFUSIVE PROPAGATION OF HIGH ENERGY COSMIC RAYS IN GALAXY: EFFECT OF HALL DRIFT

Hideyoshi Arakida; Shuichi Kuramata

INTERNATIONAL JOURNAL OF MODERN PHYSICS A, Feb. 2011, Refereed, Not invited - Influence of dark matter on light propagation in solar system

Hideyoshi Arakida

ADVANCES IN SPACE RESEARCH, Apr. 2010, Refereed, Not invited - Secular Increase of the Astronomical Unit: a Possible Explanation in Terms of the Total Angular-Momentum Conservation Law

Takaho Miura; Hideyoshi Arakida; Masumi Kasai; Shuichi Kuramata

PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN, Dec. 2009, Refereed, Not invited - Influence of Dark Matter on Light Propagation in Solar System Experiments

H. Arakida

Proceedings of the 18th Workshop on General Relativity and Gravitation in Japan, Jun. 2009, Not refereed, Not invited

Lead - Time delay in Robertson-McVittie spacetime and its application to increase of astronomical unit

Hideyoshi Arakida

NEW ASTRONOMY, Apr. 2009, Refereed, Not invited - Quasi-Hilda comet 147P/Kushida-Muramatsu - Another long temporary satellite capture by Jupiter

K. Ohtsuka; T. Ito; M. Yoshikawa; D. J. Asher; H. Arakida

ASTRONOMY & ASTROPHYSICS, Oct. 2008, Refereed, Not invited - Does Astronomical Unit increase?: Cosmological Expansion and Solar System Dynamics

H. Arakida

Proceedings of the 17th Workshop on General Relativity and Gravitation in Japan, Jun. 2008, Not refereed, Not invited

Lead - Surface heterogeneity of 2005 UD from photometric observations

D. Kinoshita; K. Ohtsuka; T. Sekiguchi; J. Watanabe; T. Ito; H. Arakida; T. Kasuga; S. Miyasaka; R. Nakamura; H.-C. Lin

ASTRONOMY & ASTROPHYSICS, May 2007, Refereed, Not invited - Application of Picard-Chebyshev method to orbital dynamics

H. Arakida; T. Ito; T. Fukushima

East-Asia Numerical Astrophysics Meeting, Dec. 2006, Not refereed, Not invited

Lead - Picard-Chebyshev 法の軌道力学への応用とそのベクトル化・並列化

H. Arakida

Proceedings of the N-body Dynamics Symposium, Jul. 2006, Not refereed, Not invited

Lead - Present State and Prospects of Experimental Relativity in Solar System

H. Arakida

Proceedings of the 37th Symposium on Celestial Mechanics, May 2005, Not refereed, Not invited

Lead - Gravitomagnetic Translational Motion on Gravitational Time Delay

H. Arakida

Proceedings of the 36th Symposium on Celestial Mechanics, Oct. 2004, Not refereed, Not invited

Lead - Long-term integration error of KS regularized orbital motion

H Arakida; T Fukushima

ASTROPHYSICAL SUPERCOMPUTING USING PARTICLE SIMULATIONS, 2003, Not refereed, Not invited - Motion around Triangular Lagrange Points Perturbed by Other Bodies

H. Arakida; T. Fukushima

Proceedings of the 34th Symposium on Celestial Mechanics, Oct. 2002, Not refereed, Not invited

Lead - Long-term integration error of Kustaanheimo-Stiefel regularized orbital motion. II. Method of variation of parameters

H Arakida; T Fukushima

ASTRONOMICAL JOURNAL, Mar. 2001, Refereed, Not invited - Long-term integration error of Kustaanheimo-Stiefel regularized orbital motion

H Arakida; T Fukushima

ASTRONOMICAL JOURNAL, Dec. 2000, Refereed, Not invited

### MISC

- Apollo asteroid 1999 Yc: Another large member of the PGC?

K. Ohtsuka; H. Arakida; T. Ito; M. Yoshikawa; D. J. Asher

METEORITICS & PLANETARY SCIENCE, Jul. 2008, Not refereed, Not invited - Report of the Symposium on Gunma Celestial Mechanics and N-Body Dynamics

H. Arakida

Astronomical Herald, Aug. 2005, Not refereed, Not invited

Lead

### Books and other publications

- ★Encyclopedia of Relativity and the Universe.

安東正樹; 白水徹也; 編集幹事; 浅田秀樹; 石橋明浩; 小林努; 真貝寿明; 早田次郎; 谷口敬介, Joint work, 2.7 Motion of celestial bodies and bending of light, M. Ando; T. Shiromizu (chief editor)/H. Asada; H. IShibashi; T. Kobayashi; H. Shinkai; J Soda; K. Taniguchi

Asakura Publishing Co.,Ltd., Jun. 2020, Refereed

9784254131284

### Lectures, oral presentations, etc.

- ★A New Verification of General Relativity Using the Kozai-Lidov Mechanism

Hideyoshi ARAKIDA

The 66th Academic Research Conference of the Faculty of Engineering of Nihon University, Dec. 2023, Not invited - ★The optical geometry definition of the total deflection angle of a light ray in curved spacetime

Hideyoshi Arakida

2023 Asia-Pacific Regional IAU Meeting, Aug. 2024, Not invited - ★General relativistic aberration equation and bending angle of light ray in Kerr spacetime

H. ARAKIDA

ASJ 2022 spring annual meeting, Mar. 2022, Astronomical Society of Japan, Not invited - ★New concept of the total deflection angle and its application to the contribution of the cosmological constant on the bending of the light ray

Hideyoshi ARAKIDA

Astronomical Society of Japan 2021 Spring Annual Meeting, Mar. 2021, Not invited - ★New concept of the total deflection angle and its application to the contribution of the cosmological constant on the bending of the light ray

Hideyoshi ARAKIDA

Physical Society of Japan2021 Annual (76th) Meeting, Mar. 2021, Not invited - ★Remote learning of mathematics courses in the School of Engineering

Hideyoshi ARAKIDA

Council on General Education for the Five Faculties of Science and Engineering, Mar. 2021, Not invited - Luminosity-distance relation of Ia Super Novae and cosmological parameters in Finsler-Randers spacetime

Hideyoshi Arakida

The 64th Academic Research Conference of the Faculty of Engineering of Nihon University, Dec. 2021, Not invited - On the Asia-Pacific Regional IAU Meeting held in Fukushima, 2023

Hideyoshi Arakida

Japanese Society for Education and Popularization of Astronomy, Tohoku branch meeting 2021, Dec. 2021, Japanese Society for Education and Popularization of Astronomy, Not invited - New concept and definition of the total deflection angle of a light ray in curved spacetime

Hideyoshi ARAKIDA

The 33rd Rironkon Symposium, Dec. 2020, Not invited - New concept and definition of the total deflection angle of a light ray in curved spacetime

Hideyoshi ARAKIDA

online JGRG workshop 2020, Nov. 2020, Not invited - Computation of orbits of small solar system bodies and their related areas

H. Arakida

Mini-workshop on Space Astronomy for Engineering-Science and Engineering-Department Collaboration Research Start-up, Feb. 2020, Not invited - A new method for measuring the bending angle of light in a gravitational field

H. ARAKIDA

The 62nd Academic Research Conference of the Faculty of Engineering of Nihon University, Dec. 2019, Not invited - Prospects and Challenges for the Education of Astronomy in the College of Engineering, Nihon University

H. ARAKIDA

2019 Japanese Society for Education and Popularization of Astronomy Tohoku Branch Research Association, Nov. 2019, Not invited - General Relativistic Aberration Equation and Measurable Angle of Light Ray in Kerr Spacetime

H. Arakida

The 61st Academic Research Conference of the Faculty of Engineering, Nihon University, Dec. 2018, Not invited - Definition and calculation formula for the total deflection angle of light in a gravitational field based on the Gauss-Bonnet theorem

H. ARAKIDA

The 60th Academic Research Conference of the Faculty of Engineering of the Nippon University, Dec. 2017, Not invited - Light Deflection and Gauss-Bonnet Theorem: Definition of Total Deflection Angle and its Applications

H. Arakida

DTA Workshop 2017, Nov. 2017, Theoretical Research Division, National Astronomical Observatory of Japan, Invited - Light deflection and Gauss--Bonnet theorem. I. Definition of total deflection angle

H. ARAKIDA

Astronomical Society of Japan Annual Meeting 2017 Fall, Sep. 2017, Not invited - Light deflection and Gauss--Bonnet theorem. II. Application to Schwarzschild and Schwarzschild--de Sitter spacetime

H. ARAKIDA

Astronomical Society pf Japan Annual Meeting 2017 Fall, Sep. 2017, Not invited - Fascinated by the Wonder of Gravity

H. ARAKIDA

Commemorative lecture for the founding 2017, Apr. 2017, Not invited - Note on the perihelion/periastron advance due to cosmological constant

H. ARAKIDA

Symposium on Celestial Mechanics and N Body Dynamics, Mar. 2017, Not invited - General Relativistic Sitnikov 3-Body Problem

H. ARAKIDA

Symposium on Celestial Mechanics and N Body Dynamics, Mar. 2017, Invited - Bending of light due to the cosmological constant Λ and the Gauss-Bonnet theorem

H. ARAKIDA

Astronomical Society of Japan Annual Meeting 2017 Spring, Mar. 2017, Not invited - Future dreams and their realization

H. ARAKIDA

Career Education Lecture, Jun. 2016, Nihohe City Nisatai Elementary School, Invited - Consideration of various problems concerning the bending of light due to the cosmological constant Λ

H. ARAKIDA

Astronomical Society of Japan Annual Meeting 2016 Spring, Mar. 2016, Not invited - Chasing shadow of the dark side of Universe

Hideyoshi Arakida

Memorial Lecture for the Certificate of Eligibility for Starry Night Guide, Nov. 2015, Invited - Does light bend by Λ? The contribution of the cosmological constant to the curvature of light and the lensing equation

H. ARAKIDA; M. KASAI

The 56th Academic Research Conference of the Faculty of Engineering of the Nihon University, Dec. 2013, Not invited - General Relativistic Sitnikov 3-Body Problem

H. Arakida

he 23rd Workshop on General Relativity and Gravitation in Japan (JGRG23), Nov. 2013, Not invited - General relativistic Sitnikov 3-Body problem

H. Arakida

Astronomical Society of Japan Annual Meeting 2013 Fall, Sep. 2013, Not invited - Report on the weather change in Morioka during the partial solar eclipse on May 21 using Iwate University "School meteorological observatory" data

H. ARAKIDA

School Meteorological Observatory Research Meeting, Mar. 2013, Not invited - Note on the perihelion advance due to cosmological constant

H. Arakida

Astronomical Society of Japan Annual Meeting 2013 Spring, Mar. 2013, Not invited - Effect of the cosmological constant on the bending of light and the cosmological lens equation

H. arakida; M. Kasai

Resceu Symposium on General Relativity and Gravitation (JGRG22, Nov. 2012, Not invited - Report on the weather change in Morioka during the partial solar eclipse on May 21 using Iwate University "School meteorological observatory" data

H. ARAKIDA

The Tohoku Branch Research Meeting of Japanese Society for Education and Popularization of Astronomy, Nov. 2012, Not invited - Meteorological changes in Morioka City during the solar eclipse of May 21, recorded at the Iwate University "School Meteorological Observatory".

H. ARAKIDA; T. Nagoshi

Astronomical Society pf Japan Annual Meeting 2021 Fall, Sep. 2012, Not invited - Does light bend by Λ? The effect of the cosmological constant on the curvature of light and the lensing equation

H. ARAKIDA; M. KASAI

2012 Autumn Meeting of the Physical Society of Japan, Sep. 2012, Not invited - Meteorological changes in Morioka City during the solar eclipse of May 21, recorded at the Iwate University "School Meteorological Observatory".

H. ARAKIDA; T. Nagoshi

The 4th Annular Solar Eclipse Symposium, Aug. 2012, Not invited - A Study on Meteorological Changes during the Solar Eclipse on May 21 Using School Meteorological Observatory Data

H. ARAKIDA; T. Nagochi

The 66th Conference of the Japan Society for Geological Education (Iwate Conference), Aug. 2012, Not invited - Does light bend by Λ? The effect of the cosmological constant on the curvature of light and the lensing equation

H. ARAKIDA; M. KASAI

Astronomical Society of Japan Annual Meeting 2012 Spring, Mar. 2012, Not invited - Light bending due to the cosmological constant

H. ARAKIDA

The 24th Ririonkon Symposium, Nov. 2011, Not invited - Effect of cosmological constant on light deflection

H. Arakida

The 21st Workshop on General Relativity and Gravitation in Japan, Sep. 2011, Not invited - Time delay of light and signal in a gravitational field: An approach based on the Time Transfer Function

H. ARAKIDA

Astronomical Society of Japan Annual Meeting 2011 Fall, Sep. 2011, Not invited - Investigation of the contribution of the cosmological constant to the bending of light

H. ARAKIDA

Seminar on Astrophysics, Department of Cosmology and Cosmic Ray Research, Faculty of Science and Engineering, Hirosaki University, Sep. 2011, Not invited - Investigating Relativity in the Solar System

H. ARAKIDA

Japan Scientists Association (JSA) Iwate Branch Study Meeting, Aug. 2011, Not invited - Application of Time Transfer Function to Robertson-McVittie Model

H. ARAKIDA

The 23rd Rironkon Symposium, Dec. 2010, Not invited - Light propagation in time-dependent gravitational field

H. Arakida

The 20th Workshop on General Relativity and Gravitation in Japan, Sep. 2010, Not invited - An Approach to Constructing a Model of Light/Signal Propagation in Time-Dependent Spacetime

H. ARAKIDA

Astronomical Society of Japan Annual Meeting 2010 Spring, Mar. 2010, Not invited - Cosmological Influence on Gravitationally Bound Local System: Case of Lemaitre-Tolman-Bondi Spacetime and its Application to Secular Increase of Astronomical Unit

H. Arakida

The 19th Workshop on General Relativity and Gravitation in Japan, Nov. 2009, Not invited - Particle orbits in Lemaitre-Tolman-Bondi spacetime

H. ARAKIDA

Astronomical Society of Japan Annual Meeting 2009 Spring, Mar. 2009, Not invited - Planetary motion in Lemaitre-Tolman-Bond spacetime and perennial changes in astronomical units

H. ARAKIDA

The 41st Symposium on Celestial Mechanics and N Body Dynamics, Mar. 2009, Not invited - Effect of dark matter on signal propagation in the solar system

H. ARAKIDA

The 21st Ririokon Symposium, Dec. 2008, Not invited - Unsolved Problems in Precise Positional Astronomy in the Solar System

H. ARAKIDA

Seminar at the Astrophysics Laboratory, Ochanomizu University, Dec. 2008, Not invited - Influence of Dark Matter on Light Propagation in Solar System Experiment

H. Arakida

The 18th Workshop on General Relativity and Gravitation in Japan, Nov. 2008, Not invited - Restriction of dark matter abundance in the solar system using signal propagation

H. ARAKIDA

Astronomical Society of Japan Annual Meeting 2008 Fall, Sep. 2008, Not invited - Secular increase of astronomical unit

H. ARAKIDA

Astronomical Data Center Colloquium, National Astronomical Observatory of Japan, Jun. 2008, Not invited - Does the expansion of the universe increase the astronomical unit?

H. ARAKIDA

Astronomical Society pf Japan Annual Meeing 2008 Spring, Mar. 2008, Not invited - Does Astronomical Unit Increase ?

H. Arakida

The 17th Workshop on General Relativity and Gravitation in Japan, Dec. 2007, Not invited - Does the astronomical unit change?

H. ARAKIDA

The 20th Ririonkon Symposium, Dec. 2007, Not invited - Does astronomical unit increase?

H. ARAKIDA

Tohoku University Institute of Astronomy Seminar, Nov. 2007, Not invited - Does the Astronomical Unit Increase!? --- A New Problem from Precise Positional Measurements of Solar System Bodies

H. ARAKIDA

Astrometry Research Meeting., Sep. 2007, Not invited - Application of Picard-Chebyshev method to orbital dynamics

H. Arakida; T. Ito; T. Fukushima

EAST-ASIA NUMERICAL ASTROPHYSICS MEETING (EANAM),, Nov. 2006, Not invited - Application of Picard-Chebyshev method to orbital mechanics and its vectorization and parallelization 2

H. ARAKIDA; T. ITO; T. FUKUSHIMA

Astronomical Society pf Japan Annual Meeting 2006 Fall, Sep. 2006, Not invited - Application of Picard-Chebyshev method to orbital mechanics and its vectorization and parallelization

H. ARAKIDA; T. ITO; T. FUKUSHIMA

Astronomical Society of Japan Annual Meeting 2006 Spring, Mar. 2006 - Application of Picard-Chebyshev method to orbital mechanics and its vectorization and parallelization

H. ARAKIDA; T. ITO; T. FUKUSHIMA

Astronomical Society of Japan Annual Meeting 2006 Spring, Mar. 2006, Not invited - Picard-Chebyshev 法の軌道力学への応用とその ベクトル化・並列化

荒木田英禎,伊藤孝士; 福島登志夫

潮来天体力学N体力学研究会, Mar. 2006, Not invited - Propagation of high-energy cosmic rays in a galactic magnetic field by diffusion and drift

H. ARAKIDA; S. KURAMATA

Astronomical Society of Japan Annual Meeting 2005 Fall, Oct. 2005, Not invited - Current status and future of experimental relativity in the solar system

H. ARAKIDA

Gumma Symposium on Celestial Mechanics and N Body Dynamics, Mar. 2005, Not invited - Relativistic effect of higher order on Shapiro time delay

H. ARAKIDA; T. FUKUSHIMA

Astronomical Society of Japan Annual Meeting 2004 Spring, Mar. 2004 - Relativistic effect of higher order on Shapiro time delay

H. ARAKIDA; T. FUKUSHIMA

Hakone Symposium on Celestial Mechanics and N Body Dynamics, Mar. 2004, Not invited - Relativistic effect of higher order on Shapiro time delay

H. ARAKIDA; T. FUKUSHIMA

Hakone Symposium on Celestial Mechanics and N Body Dynamics, Mar. 2004, Not invited - Verification of relativistic effects from orbital analysis of lunar orbiting satellites

H. ARAKIDA; T. FUKUSHIMA

Astronomical Society of Japan Annual Meeting 2002 Fall, Oct. 2002, Not invited - Motion around Triangular Lagrange Points , Perturbed by Other Bodies

H. ARAKIDA; T. FUKUSHIMA

Astronomical Society of Japan Annual Meeting 2002 Spring, Mar. 2002 - Motion around Triangular Lagrange Points Perturbed by Other Bodies

荒木田英禎; 福島登志夫

日本天文学会2002年春季年会, Mar. 2002, Not invited - Motion around Triangular Lagrange Points Perturbed by Other Bodies

H. ARAKIDA; T. FUKUSHIMA

Hakone Symposium on Celestial Mechanics and N Body Dynamics, Mar. 2002, Not invited - Application of Ring Potential to Motion around Lagrangian Equilibrium Point

H. ARAKIDA; T. FUKUSHIMA

Astronomical Society of Japan Annual Meeting 2001 Fall, Oct. 2001, Not invited - Long term integration error of KS regularized orbital motion

H. Arakida; T. Fukushima

IAU Symposium 208 Astrophysical Supercomputing using Particle Simulations, Jul. 2001, Not invited - Long term integration error of KS regularized orbital motion

H. Arakida; T. Fukushima

Meeting of American Astronomical Society Division on Dynamical Astronomy, Apr. 2001, Not invited - Orbital stability of Lagrange equilibrium point of Sun-Earth system

H. ARAKIDA; T. FUKUSHIMA

Astronomical Society of Japan Annual Meeting 2001 Spring, Mar. 2001, Not invited - Orbital stability of Lagrange equilibrium point of Sun-Earth system

H. ARAKIDA; T. FUKUSHIMA

Astronomical Society of Japan Annual Meeting 2001 Spring, Mar. 2001, Not invited - Long term integration error of KS regularized orbital motion II: Method of variation of parameter

H. ARAKIDA; T. FUKUSHIMA

Astronomical Society of Japan Annual Meeting 2000 Fall, Oct. 2000, Not invited - Error growth of the KS regularized orbital motion

H. Arakida; T. Fukushima

The Transneptunian Population, 24th meeting of IAU Joint Discussion 4, Aug. 2000, Not invited - Long-term integration error of KS-regularized orbital motion

H. ARAKIDA; T. FUKUSHIMA

Astronomical Society of Japan Annual Meeting 2000 Spring, Apr. 2000, Not invited - Long term integration error of KS regularized orbital motion,

H. ARAKIDA; T. FUKUSHIMA

Hayama Symposium on Celestial Mechanics and N Body Dynamics, Mar. 2000, Not invited - Long-term integration error of KS-regularized orbital motion

H. ARAKIDA

Workshop on Next Generation Numerical Methods, Jan. 2000, Not invited

### Courses

- Mathematics and Exercises IV for Engineering Science (Civil Engineering)

Apr. 2018 - Present

Nihon Univ. - Mathematics and Exercises IV for Engineering Science (Mechanics)

Apr. 2018 - Present

Nihon Univ. - Mathematics and Exercises IV for Engineering Science V (Mechanics)

Apr. 2018 - Present

Nihon Univ. - Probability and Statistics (Mechanics)

Apr. 2017 - Present

Nihon Univ. - Probability and Statistics (Electricity and Electronics)

Apr. 2017 - Present

Nihon Univ. - Mathematics and Exercises I for Engineering Science

Apr. 2017 - Present

Nihon Univ. - Mathematics and Exercises II for Engineering Science

Apr. 2017 - Present

Nihon Univ. - Mathematics and Exercises III for Engineering Science

Apr. 2017 - Present

Nihon Univ. - Self-Independence and Creativity 1

Apr. 2017 - Present

Nihon Univ. - Fundamental Analysis

Apr. 2013 - Apr. 2018

Nihon Univ. - Differential equations (mechanics)

Apr. 2013 - Mar. 2018

Nihon Univ. - Differential I (Calculus)

Apr. 2013 - Mar. 2017

Nihon Univ. - Differential II (Calculus)

Apr. 2013 - Mar. 2017

Nihon Univ. - IntegralI (Calculus)

Apr. 2013 - Mar. 2017

Nihon Univ. - Basic Mathematics

Apr. 2013 - Mar. 2017

Nihon Univ. - Matrices and determinants

Apr. 2013 - Mar. 2017

Nihon Univ. - Complex Function Theory

Apr. 2014 - Mar. 2015

Nihon Univ. - Differential equations (electronics and electricity)

Apr. 2013 - Mar. 2014

Nihon Univ. - Basic Mathematics

Apr. 2012 - Mar. 2013

Faculty of education, Iwate Univ. - Physics A

Apr. 2011 - Mar. 2013

Faculty of education, Iwate Univ. - Physics B

Apr. 2011 - Mar. 2013

Faculty of education, Iwate Univ. - Geology experiment

Apr. 2011 - Mar. 2013

Faculty of education, Iwate Univ. - Geology A

Apr. 2011 - Mar. 2013

Faculty of education, Iwate Univ. - Science Education Method I

Apr. 2011 - Mar. 2013

Faculty of education, Iwate Univ. - Special Topics in Physics 3

Apr. 2011 - Mar. 2013

Graduate school of education, Iwate Univ. - Special Lecture on Earth Science D/IV

Apr. 2011 - Mar. 2012

Faculty of education, Iwate Univ. - Basic Mathematics

Apr. 2009 - Mar. 2012

Meisei Univ. (Ome) - Physics

Apr. 2003 - Mar. 2011

Meisei Univ. (Ome) - Self-reliance and experience (Introduction to writing)

Apr. 2006 - Mar. 2009

Meisei Univ. (Ome) - Universe and Infomation

Apr. 2005 - Mar. 2006

Meisei Univ. (Ome) - Advanced General Theory of Relativity

Apr. 2005 - Mar. 2006

Meisei Univ. (Hino)

### Affiliated academic society

- Aug. 2015 - Present

The International Society on General Relativity and Gravitation - Apr. 2015 - Present

JAPAN SOCIETY OF MATHEMATICAL EDUCATION - Apr. 2015 - Present

Society of Japan Science Teaching - Jul. 2013 - Present

Mathematics Education Society of Japan - Jun. 2013 - Present

The Physics Education Society of Japan - Nov. 2011 - Present

Japanese Society for Education and Popularization of Astronomy, - Oct. 2011 - Present

Physical Society of Japan - Sep. 2009 - Present

International Astronomical Union - Dec. 2000 - Present

Rironkon - Oct. 1999 - Present

Astronomical Society of Japan

### Research Themes

- Extension of General Relativity and Understanding Accelerated Expansion of the Universe Using Finsler Geometry

Nihon Univ., Director of Engineering Designated Research (Special Research), Apr. 2021 - Mar. 2022 - Research on the contribution of the cosmological constant to the bending of light in a gravitational field

2015 - 2017 - Investigating the problem of secular increase of astronomical units from the viewpoint of gravitational theory verification

2009 - 2012 - Research on the verification of general relativity in the solar system

2006 - 2008

### Academic Contribution Activities

- ★Asia-Pacific Regional IAU Meeting organizing committee

Planning etc

International Astronomical Union, Koriyama Fukushima, May 2021 - 01 Aug. 2023 - ★Chairperson, Cosmology Session, 2020 Autumn Meeting of the Astronomical Society of Japan

Panel chair etc

09 Sep. 2020 - 09 Sep. 2020 - ★Organizing Committee of the 34th Annual Conference of Japanese Society for Education and Popularization of Astronomy

Planning etc

Dec. 2019 - Sep. 2020 - ★Chair of Japanese Society for Education and Popularization of Astronomy Tohoku Branch Meeting

Panel chair etc

06 Oct. 2018 - 07 Oct. 2018 - ★Chairperson, Cosmology Session, 2017 Spring Meeting of the Astronomical Society of Japan

Panel chair etc

15 Mar. 2017 - 15 Mar. 2017 - ★Organizing Committee of the 30th Annual Conference of Japanese Society for Education and Popularization of Astronomy

Planning etc

21 Aug. 2016 - 23 Aug. 2016 - ★Chair of Japanese Society for Education and Popularization of Astronomy Tohoku Branch Meeting

Panel chair etc

31 Oct. 2015 - 01 Nov. 2015 - ★Chair of Japanese Society for Education and Popularization of Astronomy Tohoku Branch Meeting

Panel chair etc

18 Oct. 2014 - 19 Oct. 2014 - ★Chair of Japanese Society for Education and Popularization of Astronomy Tohoku Branch Meeting

Panel chair etc

25 Jan. 2014 - 26 Jan. 2014 - ★Chairperson, Cosmology Session, 2013 Autumn Meeting of the Astronomical Society of Japan

Panel chair etc

10 Sep. 2013 - 10 Sep. 2013 - ★Chair of Japanese Society for Education and Popularization of Astronomy Tohoku Branch Meeting

Panel chair etc

11 Nov. 2012 - 11 Nov. 2012 - ★Organizing Committee of the National Conference of the Japan Society for Geological Education (Iwate Conference)

Planning etc

04 Aug. 2012 - 06 Aug. 2012 - ★Chair of the National Conference of the Japan Society for Geological Education (Iwate Conference)

Panel chair etc

05 Aug. 2012 - 05 Aug. 2012 - ★LOC of Gumma Symposium on Celestial Mechanics and N Body Dynamics

Planning etc

09 Mar. 2005 - 12 Mar. 2005 - ★LOC of Hakone Symposium on Celestial Mechanics and N Body Dynamics

Planning etc

01 Mar. 2004 - 03 Mar. 2004 - ★LOC of Izu-Nagaoka Symposium on Celestial Mechanics and N Body Dynamics

Planning etc

06 Mar. 2003 - 08 Mar. 2003 - ★LOC of Hakone Symposium on Celestial Mechanics and N Body Dynamics

Planning etc

11 Mar. 2002 - 13 Mar. 2002 - ★LOC of Kusatsu Symposium on Celestial Mechanics and N Body Dynamics

Planning etc

16 Mar. 2001 - 18 Mar. 2001 - ★Organizing Committee for the 30th Summer School of Young Astronomers and Astrophysicists

Planning etc

17 Aug. 2000 - 21 Aug. 2000 - LOC of Hayama Symposium on Celestial Mechanics and N Body Dynamics

Planning etc

15 Mar. 2000 - 17 Mar. 2000