Updated on 2024/09/26

Information

 

写真a

 
KIROLOSSE M. GIRGIS
 
Organization
International Center for Space and Planetary Environmental Science Assistant Professor
Title
Assistant Professor
Contact information
メールアドレス
Tel
0928026240

Research Areas

  • Natural Science / Theoretical studies related to particle-, nuclear-, cosmic ray and astro-physics

  • Natural Science / Space and planetary sciences

  • Frontier Technology (Aerospace Engineering, Marine and Maritime Engineering) / Aerospace engineering

Degree

  • Doctor of Philosophy ( 2020.9   Kyushu University )

  • Master of Science ( 2016.10 )

Research History

  • Kyushu University International Research Center for Space and Planetary Environmental Science (i-SPES) Specially Appointed Assistant Professor Special Project Faculty Assistant Professor

    2024.4 - Present

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    Country:Japan

  • Kyushu University International Research Center for Space and Planetary Environmental Science (i-SPES) Academic Researcher

    2022.5 - 2024.3

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    Country:Japan

  • Kyushu University Department of Earth System Science and Technology (ESST), Interdisciplinary Graduate School of Engineering Sciences (IGSES) Academic Researcher

    2020.10 - 2022.3

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    Country:Japan

  • Kyushu University Department of Earth System Science and Technology (ESST), Interdisciplinary Graduate School of Engineering Sciences (IGSES) Teaching Assistant Teaching Assistant/Research Assistant

    2018.4 - 2020.9

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    Country:Japan

  • Cairo University Aerospace Engineering Department, Faculty of Engineering Teaching Assistant Teaching Assistant/Assistant Lecturer

    2012.9 - 2017.9

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    Country:Egypt

Education

  • Kyushu University   Department of Earth System Science and Technology (ESST)   Space Physics and Space Engineering

    2017.10 - 2020.10

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    Country: Japan

    Notes: Doctoral Course

  • Cairo University   Aerospace Engineering Department, Faculty of Engineering   Space Engineering

    2012.10

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    Country: Egypt

    Notes: Master's Degree Program

  • Cairo University   Aerospace Engineering Department, Faculty of Engineering   Aerospace Engineering

    2008.10

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    Country: Egypt

    Notes: Bachelor's Degree program

Research Interests・Research Keywords

  • Research theme:Radiation Belt Simulations

    Keyword:Radiation Belt Simulations

    Research period: 2018.10 - Present

  • Research theme:South Atlantic Anomaly

    Keyword:South Atlantic Anomaly

    Research period: 2017.10 - Present

  • Research theme:Space Physics

    Keyword:Space Physics

    Research period: 2012.10 - Present

  • Research theme:Space Weather

    Keyword:Space Weather

    Research period: 2012.10 - Present

  • Research theme:Spacecraft Design

    Keyword:Spacecraft Design

    Research period: 2012.10 - Present

Papers

  • Inner Radiation Belt Simulations During the Successive Geomagnetic Storm Event of February 2022 Reviewed

    Kirolosse M. Girgis, Tohru Hada, Akimasa Yoshikawa, Shuichi Matsukiyo, Abraham C.‐L. Chian, Ezequiel Echer

    Space Weather   22 ( 7 )   2024.7   ISSN:1542-7390 eISSN:1542-7390

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    Authorship:Lead author, Corresponding author   Publishing type:Research paper (scientific journal)   Publisher:American Geophysical Union (AGU)  

    Abstract

    Starting from 29 January 2022, a series of solar eruptions triggered a moderate geomagnetic storm on 3 February 2022, followed subsequently by another. Despite the typically minimal impact of unintense storms on space technology, 38 out of the 49 Starlink satellites underwent orbital decay, re‐entering Earth's atmosphere. These satellite losses were attributed to enhanced atmospheric drag conditions. This study employs numerical simulations, utilizing our test particle simulation code, to investigate the dynamics of the inner radiation belt during the two magnetic storms. Our analysis reveals an increase in proton density and fluxes during the transition from the recovery phase of the first storm to the initial phase of the second, primarily driven by intense solar wind dynamic pressure. Additionally, we assess Single Event Upset (SEU) rates, which exhibit a 50% increase in comparison to initial quiet conditions.

    DOI: 10.1029/2023sw003789

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  • Terrestrial and Martian space weather: A complex systems approach Invited Reviewed

    Abraham Chian, Rodrigo Miranda, Cesar Bertucci, Xóchitl Blanco-Cano, Joe Borovsky, Sergio Dasso, Ezequiel Echer, Adriane Franco, Kirolosse M. Girgis, J. Américo González-Esparza, Tohru Hada, Hiroshi Hasegawa, Syau-Yun Hsieh, Primoz Kajdič, Christian Mazelle, Erico Rempel, Diana Rojas-Castillo, Beatriz Sánchez-Cano, David Sibeck, Marina Stepanova, José Valdés-Galicia, Juan Valdivia

    Journal of Atmospheric and Solar-Terrestrial Physics   259   2024.6   ISSN:1364-6826 eISSN:1879-1824

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    Publishing type:Research paper (scientific journal)   Publisher:Elsevier BV  

    DOI: 10.1016/j.jastp.2024.106253

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  • Critical analysis of the ULF power depression as a possible Tohoku earthquake precursor Reviewed

    Vyacheslav A Pilipenko, Valery A Martines-Bedenko, Akimasa Yoshikawa, Kirolosse M Girgis

    Earthquake Science   37 ( 5 )   406 - 413   2024.6   ISSN:1674-4519 eISSN:1867-8777

  • Daily geomagnetic variations under variable IMF/solar conditions and their connection with underground conductivity changes in Japan Reviewed

    Emad M. Takla, Akimasa Yoshikawa, Teiji Uozumi, Kirolosse M. Girgis, A. Abdelkader

    Annals of Geophysics   67 ( 1 )   2024.5   ISSN:1593-5213 eISSN:2037-416X

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    Publishing type:Research paper (scientific journal)   Publisher:Instituto Nazionale di Geofisica e Vulcanologia, INGV  

    Fluctuations in Solar Wind (SW) and Interplanetary Magnetic Field (IMF) significantly affect the Geomagnetic Field (GF) measurements particularly during extreme space weather events. The current study investigates the variations of horizontal (H), vertical (Z) geomagnetic components under quiet and disturbed IMF and solar conditions as well as the effect of underground conductivity on the stationary geomagnetic measurements in Japan. Results of data analysis show that the response of the GF to IMF and solar parameters fluctuations is variable. The H- and Z-components were in good harmony with high visual correlation along a latitudinal profile across Japan during quiet times. On the other hand, during the disturbed times related to a Coronal Mass Ejection (CME) launched on 13 May 2005, the GF components varied with the disturbance of IMF and solar parameters. The H-components showed highly correlated variations with a significant reduction along the examined profile due to intensified ionospheric currents, while the Z-components recorded in the northern part of Japan showed abnormal daily variations pattern (positive daily variations) with an enhanced amplitude which is opposite to the normal behavior of daily variations recorded in the central and southern parts of Japan (negative daily variations). The observed enhanced and abnormal daily variation of Z-components in north Japan, which we consider a remarkable observation here, is possibly linked with underground conductivity anomaly in this region.

    DOI: 10.4401/ag-9021

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  • A simplified geospace model for satellite design Reviewed

    Kirolosse M. Girgis, Atef O. Sherif

    Advances in Space Research   73 ( 9 )   4700 - 4710   2024.5   ISSN:0273-1177 eISSN:1879-1948

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    Authorship:Lead author, Corresponding author   Language:English   Publishing type:Research paper (scientific journal)  

    DOI: 10.1016/j.asr.2023.12.064

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  • A multi-disciplinary approach to investigate particle dynamics in the South Atlantic Magnetic Anomaly

    Kirolosse Girgis, Tohru Hada, Akimasa Yoshikawa, Shuichi Matsukiyo

    European Geosciences Union (EGU)   2024.3

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    Authorship:Lead author, Corresponding author  

    DOI: 10.5194/egusphere-egu24-1630

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  • LEO Proton Flux Modeling due to Solar Proton Injections during Geomagnetic Storms

    Kirolosse M. Girgis, Tohru Hada, Akimasa Yoshikawa, Shuichi Matsukiyo, Joseph Lemaire, Viviane Pierrard, Susan Samwel

    American Geophysical Union (AGU)   2023.12

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    Authorship:Lead author, Corresponding author  

    DOI: 10.22541/au.170328011.17032719/v1

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  • Geomagnetic Storm Effects on the LEO Proton Flux During Solar Energetic Particle Events Reviewed

    Kirolosse M. Girgis, Tohru Hada, Akimasa Yoshikawa, Shuichi Matsukiyo, Viviane Pierrard, Susan W. Samwel

    Space Weather   21 ( 12 )   2023.12   ISSN:1542-7390 eISSN:1542-7390

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    Language:Others   Publishing type:Research paper (scientific journal)   Publisher:American Geophysical Union (AGU)  

    Abstract

    During a few solar energetic particle (SEP) events, solar protons were trapped within the geomagnetic field and reached the outer edge of the inner radiation belt. We reproduced this phenomenon by modeling the proton flux distribution at the Low‐Earth Orbit (LEO) for different geomagnetic conditions during solar particle events. We developed a three‐dimensional relativistic test particle simulation code to compute the 70–180 MeV solar proton Lorentz trajectories in low L‐shell range from 1 to 3. The Tsyganenko model (T01) generated the background static magnetic field with the IGRF (v12) model. We have selected three Dst index values: −7, −150, and −210 nT, to define quiet time, strong, and severe geomagnetic storms and to generate the corresponding inner magnetic field configurations. Our results showed that the simulated solar proton flux was more enhanced in the high‐latitude regions and more expanded toward the lower latitude range as long as the geomagnetic storm was intensified. Satellite observations and geomagnetic cutoff rigidities confirmed the numerical results. Furthermore, the LEO proton flux distribution was deformed, so the structure of the proton flux inside the South Atlantic Anomaly (SAA) became longitudinally extended as the Dst index decreased. Moreover, we have assessed the corresponding radiation environment of the LEO mission. We realized that, for a higher inclined LEO mission during an intense geomagnetic storm (Dst = −210 nT), the probability of the occurrence of the Single Event Upset (SEU) rates increased by 19% and the estimated accumulated absorbed radiation doses increased by 17% in comparison with quiet conditions.

    DOI: 10.1029/2023sw003664

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  • Radiation Analysis of LEO Mission in the South Atlantic Anomaly during Geomagnetic Storm Invited Reviewed

    Kirolosse M. Girgis, Tohru Hada, Shuichi Matsukiyo, Akimasa Yoshikawa

    IEEE Journal of Radio Frequency Identification   6   292 - 298   2022.4   eISSN:2469-7281

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    Language:Others   Publishing type:Research paper (scientific journal)  

    We have studied the radiation environment of LEO spacecraft when passing through the South Atlantic Anomaly (SAA) during the geomagnetic storm event of 15 May 2005. The 70-180 MeV proton flux information were numerically obtained from a simulation model of the inner radiation belt. The radiation analysis was consisted of two parts: the estimation of the Single Event Upset (SEU) rates and the absorbed radiation doses. One of the characteristics of the SAA at 800 km altitude during the recovery phase of the geomagnetic storm was the enhancement of its southern proton flux cell. It was found that the excess SEU rates and absorbed radiation doses could reach at least 200 % and 70 % respectively during the recovery phase in comparison to the initial phase of the geomagnetic storm. The estimated radiation results were in a good agreement with observations.

    DOI: 10.1109/JRFID.2022.3163441

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  • Seasonal variation and geomagnetic storm index effects on the proton flux response in the South Atlantic Anomaly by test particle simulations Reviewed

    Kirolosse M. Girgis, Tohru Hada, Shuichi Matsukiyo

    Journal of Atmospheric and Solar-Terrestrial Physics   228   105808 - 105808   2022.2   ISSN:1364-6826 eISSN:1879-1824

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    Language:Others   Publishing type:Research paper (scientific journal)   Publisher:Elsevier BV  

    DOI: 10.1016/j.jastp.2021.105808

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  • Estimation of Single Event Upset (SEU) rates inside the SAA during the geomagnetic storm event of 15 May 2005 Reviewed

    Kirolosse M. Girgis, Tohru Hada, Shuichi Matsukiyo

    2021 IEEE International Conference on Wireless for Space and Extreme Environments (WiSEE)   9   27 - 30   2021.10   ISSN:2380-7636 ISBN:978-0-7381-4451-1

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    Language:Others   Publishing type:Research paper (other academic)   Publisher:IEEE  

    DOI: 10.1109/wisee50203.2021.9613828

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  • Inner radiation belt simulations of the proton flux response in the South Atlantic Anomaly during the Geomagnetic Storm of 15 May 2005 Reviewed

    Kirolosse M. Girgis, Tohru Hada, Shuichi Matsukiyo, Akimasa Yoshikawa

    Journal of Space Weather and Space Climate   11   48 - 48   2021.9   ISSN:2115-7251 eISSN:2115-7251

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    Language:Others   Publishing type:Research paper (scientific journal)   Publisher:EDP Sciences  

    A test particle simulation code was developed to simulate the inner proton belt response during the intense geomagnetic storm of 15 May 2005. The guiding center model was implemented to compute the proton trajectories with an energy range of 70–180 MeV. The time-varying magnetic field model implemented in the simulations was computed by the Tsyganenko model TS05 with the associated inductive electric field. One of the most important features of the low-earth orbit (LEO) environment is the South Atlantic Anomaly, which imposes a dangerous radiation load on most LEO missions. This research aims to investigate the proton flux variations in the anomaly region with respect to space weather conditions. The results showed that during the main phase of the geomagnetic storm, the proton flux in the SAA decreased, whereas, throughout the initial and recovery phases, the proton flux was increased at most of the altitudes. Satellite measurements confirmed numerical results.

    File: swsc210016.pdf

    DOI: 10.1051/swsc/2021031

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  • Solar wind parameter and seasonal variation effects on the South Atlantic Anomaly using Tsyganenko Models Reviewed

    Kirolosse M. Girgis, Tohru Hada, Shuichi Matsukiyo

    Earth, Planets and Space   72 ( 1 )   2020.12   ISSN:13438832 eISSN:1880-5981

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    Language:English   Publishing type:Research paper (scientific journal)   Publisher:Springer Science and Business Media {LLC}  

    File: 0615KG_publication1.pdf

    DOI: 10.1186/s40623-020-01221-2

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    Other Link: http://link.springer.com/article/10.1186/s40623-020-01221-2/fulltext.html

  • Space Weather Effects on Proton Flux Variations in the South Atlantic Anomaly: A Numerical Study performed by Test Particle Simulations

    Kirolosse Girgis, Tohru Hada, Shuichi Matsukiyo

    European Geosciences Union (EGU)   2020.3

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    Language:English   Publishing type:Research paper (conference, symposium, etc.)   Publisher:Copernicus GmbH  

    <p>In this study, we assess the hourly variations of the three-dimensional proton flux distribution inside the South Atlantic Anomaly (SAA) during a geomagnetic storm. We have developed a relativistic three-dimensional guiding center test particle simulation code in order to compute the proton trajectories in a time-varying magnetic field background provided by Tsyganenko model TS05 and the corresponding time-varying inductive electric field. The Dst index is the main input parameter to the simulation model, while the maximum proton flux, the area of the SAA calculated below a selected threshold, and the penetration depth of the protons are the main output variables investigated in this study were. Since the LEO spacecraft and human-related activities are already affected by space weather conditions, the South Atlantic Anomaly (SAA) is also believed to create an additional source of risk. As the radiation environment depends essentially on the particle flux, the objective of this study is to estimate quantitatively the proton flux variations inside the South Atlantic Anomaly (SAA) in quiet and in storm conditions. So far, it was found that after several drift periods, the protons in the South Atlantic Anomaly (SAA) could penetrate to lower altitudes during geomagnetic storm event, and that, the SAA maximum flux value and the corresponding area, varied differently with respect to altitudes. Numerical results were compared with observations by NOAA 17 and RD3R2 instrument mounted on International Space Station (ISS).</p>

    File: egu.pdf

    DOI: 10.5194/egusphere-egu2020-1551

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  • Long-Term Variations of the Solar Wind Effects on South Atlantic Anomaly (SAA) using Tsyganenko Model Reviewed

    Kirolosse M. Girgis, Tohru Hada

    Proceedings of International Exchange and Innovation Conference on Engineering & Science (IEICES)   4   2018.10

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    Authorship:Lead author, Corresponding author   Language:English   Publishing type:Research paper (international conference proceedings)  

    File: 0615KG_publication3.pdf

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MISC

  • The Impact of the Geomagnetic Storm Event of February 2022 on the Inner Radiation Belt by Test Particle Simulations

    GIRGIS Kirolosse, HADA Tohru, MATSUKIYO Shuichi, MATSUKIYO Shuichi, YOSHIKAWA Akimasa, YOSHIKAWA Akimasa, CHIAN Abraham, CHIAN Abraham

    地球電磁気・地球惑星圏学会総会及び講演会(Web)   154th   2023

Professional Memberships

  • Society of Geomagnetism and Earth, Planetary and Space Sciences (SGEPSS)

  • European Geosciences Union (EGU)

  • Japan Geoscience Union (JpGU)

Academic Activities

  • Screening of academic papers International contribution

    Role(s): Review, evaluation, Peer review

    2016.10 - Present

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    Type:Peer review 

    Number of peer-reviewed articles in foreign language journals:4

    Proceedings of International Conference Number of peer-reviewed papers:6