Journal of Astronomy and Space Sciences

About Journal of Astronomy and Space Sciences

The Journal of Astronomy and Space Sciences (JASS; J. Astron. Space Sci.) is the official publication of the Korean Space Science Society (KSSS), the most prestigious academic society in the fields of space science and space applications in Korea. JASS is an international journal devoted to the publication of fundamental and applied investigations in all aspects of spacerelated science and technology. It was launched in 1984 and is published quarterly. Each article published is assigned a unique DOI that serves to identify the article in the digital environment. JASS is an open access journal; consequently, the full texts of articles are free for all users to read and use. The papers published in JASS are accessible on the journal homepage (http://janss.kr), the DOAJ website, and the SAO/NASA ADS website. JASS has been indexed by KCI and SCOPUS since 2007 and 2012, respectively. Additionally, JASS was re-indexed by DOAJ and newly indexed in the ESCI (Emerging Sources Citation Index) by Clarivate Analytics in 2017. This journal is supported in part by a Grant-in-Aid for the publication of scientific research from the Korean Federation of Science and Technology Societies (KOFST).
Research Paper

Sep 30, 2024

Performance Test of Search Coil Sensors with Different Core Types

Hyeonji Kang, Ho Jin, Yunho Jang, Seungmin Lee, Hyeonhu Park, Juhyeong Kim, Wooin Jo

J. Astron. Space Sci. 2024;41(3):139-148.
https://doi.org/10.5140/JASS.2024.41.3.139

A search coil magnetometer (SCM) is a common equipment to observe energy transmission and vibrations in space physics, enabling measurements across a wide frequency range of up to tens of kilohertz. This study proposes the designs of a magnetic core that allows a low-mass sensor and improves its performance: a rod core, sheet-stacked core, and rolling-sheet core. Subsequently, the performance of each sensor was investigated. The sheet-stacked core using the cobalt-based alloy exhibited the highest sensitivity, although it exhibited instability ...
Research Paper

Sep 30, 2024

Classification of Gravitational Waves from Black Hole-Neutron Star Mergers with Machine Learning

Nurzhan Ussipov, Zeinulla Zhanabaev, Almat Akhmetali, Marat Zaidyn, Dana Turlykozhayeva, Aigerim Akniyazova, Timur Namazbayev

J. Astron. Space Sci. 2024;41(3):149-158.
https://doi.org/10.5140/JASS.2024.41.3.149

This study developed a machine learning-based methodology to classify gravitational wave (GW) signals from black hole-neutron star (BH-NS) mergers by combining convolutional neural network (CNN) with conditional information for feature extraction. The model was trained and validated on a dataset of simulated GW signals injected to Gaussian noise to mimic real world signals. We considered all three types of merger: binary black hole (BBH), binary neutron star (BNS) and neutron star-black hole (NSBH). We achieved up to 96% correct classification ...
Research Paper

Sep 30, 2024

The Resident Space Object Detection Method Based on the Connection between the Fourier Domain Image of the Video Data Difference Frame and the Orbital Velocity Projection

Vasilina Baranova, Alexander Spiridonov, Dmitrii Ushakov, Vladimir Saetchnikov

J. Astron. Space Sci. 2024;41(3):159-170.
https://doi.org/10.5140/JASS.2024.41.3.159

A method for resident space object detection in video stream processing using a set of matched filters has been proposed. Matched filters are constructed based on the connection between the Fourier spectrum shape of the difference frame and the magnitude of the linear velocity projection onto the observation plane. Experimental data were obtained using the mobile optical surveillance system for low-orbit space objects. The detection problem in testing mode was solved for raw video data with intensity signals from three satellites: KORONAS-FOTON...
Research Paper

Sep 30, 2024

Observational Overview of the May 2024 G5-Level Geomagnetic Storm: From Solar Eruptions to Terrestrial Consequences

Young-Sil Kwak, Jeong-Heon Kim, Sujin Kim, Yukinaga Miyashita, Taeyong Yang, Sung-Hong Park, Eun-Kyung Lim, Jongil Jung, Hosik Kam, Jaewook Lee, Hwanhee Lee, Ji-Hyun Yoo, Haein Lee, Ryun-Young Kwon, Jungjoon Seough, Uk-Won Nam, Woo Kyoung Lee, Junseok Hong, Jongdae Sohn, Jaeyoung Kwak, Hannah Kwak, Rok-Soon Kim, Yeon-Han Kim, Kyung-Suk Cho, Jaeheung Park, Jaejin Lee, Hoang Ngoc Huy Nguyen, Madeeha Talha

J. Astron. Space Sci. 2024;41(3):171-194.
https://doi.org/10.5140/JASS.2024.41.3.171

This study reports comprehensive observations for the G5-level geomagnetic storm that occurred from May 10 to 12, 2024, the most intense event since the 2003 Halloween storm. The storm was triggered by a series of coronal mass ejections (CMEs) originating from the merging of two active regions 13664/13668, which formed a large and complex photospheric magnetic configuration and produced X-class flares in early May 2024. Among the events, the most significant CME, driven by an X2.2 flare on May 9, caught up with and merged with a preceding slowe...
Technical Paper

Sep 30, 2024

Initial Results of Low Earth Orbit Space Radiation Dosimeter on Board the Next Generation Small Satellite-2

Uk-Won Nam, Won-Kee Park, Sukwon Youn, Jaeyoung Kwak, Jongdae Sohn, Bongkon Moon, Jaejin Lee, Young-Jun Choi, Jungho Kim, Sunghwan Kim, Hongjoo Kim, Hwanbae Park, Sung-Joon Ye, Hongyoung Park, Taeseong Jang

J. Astron. Space Sci. 2024;41(3):195-208.
https://doi.org/10.5140/JASS.2024.41.3.195

As human exploration goals shift from missions in low Earth orbit (LEO) to long-duration interplanetary missions, radiation protection remains one of the key technological issues that must be resolved. The low Earth orbit space radiation dosimeter (LEO-DOS) instrument to measure radiation levels and create a global dose map in the LEO on board the the next generation small satellite-2 (NEXTSat-2) was launched successfully on May 25, 2023 using the Nuri KSLV-III in Korea. The NEXTSat-2 orbits the Earth every 100 minutes, in an orbit with an incl...

CURRENT ISSUE: Sep 2024, Vol. 41, No. 3

Research Paper Performance Test of Search Coil Sensors with Different Core Types Hyeonji Kang, Ho Jin, Yunho Jang, Seungmin Lee, Hyeonhu Park, Juhyeong Kim, Wooin Jo J. Astron. Space Sci. 2024;41(3):139-148. https://doi.org/10.5140/JASS.2024.41.3.139 HTML PDF PubReader	Research Paper Classification of Gravitational Waves from Black Hole-Neutron Star Mergers with Machine Learning Nurzhan Ussipov, Zeinulla Zhanabaev, Almat Akhmetali, Marat Zaidyn, Dana Turlykozhayeva, Aigerim Akniyazova, Timur Namazbayev J. Astron. Space Sci. 2024;41(3):149-158. https://doi.org/10.5140/JASS.2024.41.3.149 HTML PDF PubReader
Research Paper The Resident Space Object Detection Method Based on the Connection between the Fourier Domain Image of the Video Data Difference Frame and the Orbital Velocity Projection Vasilina Baranova, Alexander Spiridonov, Dmitrii Ushakov, Vladimir Saetchnikov J. Astron. Space Sci. 2024;41(3):159-170. https://doi.org/10.5140/JASS.2024.41.3.159 HTML PDF PubReader	Research Paper Observational Overview of the May 2024 G5-Level Geomagnetic Storm: From Solar Eruptions to Terrestrial Consequences Young-Sil Kwak, Jeong-Heon Kim, Sujin Kim, Yukinaga Miyashita, Taeyong Yang, Sung-Hong Park, Eun-Kyung Lim, Jongil Jung, Hosik Kam, Jaewook Lee, Hwanhee Lee, Ji-Hyun Yoo, Haein Lee, Ryun-Young Kwon, Jungjoon Seough, Uk-Won Nam, Woo Kyoung Lee, Junseok Hong, Jongdae Sohn, Jaeyoung Kwak, Hannah Kwak, Rok-Soon Kim, Yeon-Han Kim, Kyung-Suk Cho, Jaeheung Park, Jaejin Lee, Hoang Ngoc Huy Nguyen, Madeeha Talha J. Astron. Space Sci. 2024;41(3):171-194. https://doi.org/10.5140/JASS.2024.41.3.171 HTML PDF PubReader
Technical Paper Initial Results of Low Earth Orbit Space Radiation Dosimeter on Board the Next Generation Small Satellite-2 Uk-Won Nam, Won-Kee Park, Sukwon Youn, Jaeyoung Kwak, Jongdae Sohn, Bongkon Moon, Jaejin Lee, Young-Jun Choi, Jungho Kim, Sunghwan Kim, Hongjoo Kim, Hwanbae Park, Sung-Joon Ye, Hongyoung Park, Taeseong Jang J. Astron. Space Sci. 2024;41(3):195-208. https://doi.org/10.5140/JASS.2024.41.3.195 HTML PDF PubReader

MOST READ ARTICLES

Research Paper Observational Overview of the May 2024 G5-Level Geomagnetic Storm: From Solar Eruptions to Terrestrial Consequences Young-Sil Kwak, Jeong-Heon Kim, Sujin Kim, Yukinaga Miyashita, Taeyong Yang, Sung-Hong Park, Eun-Kyung Lim, Jongil Jung, Hosik Kam, Jaewook Lee, Hwanhee Lee, Ji-Hyun Yoo, Haein Lee, Ryun-Young Kwon, Jungjoon Seough, Uk-Won Nam, Woo Kyoung Lee, Junseok Hong, Jongdae Sohn, Jaeyoung Kwak, Hannah Kwak, Rok-Soon Kim, Yeon-Han Kim, Kyung-Suk Cho, Jaeheung Park, Jaejin Lee, Hoang Ngoc Huy Nguyen, Madeeha Talha J. Astron. Space Sci. 2024;41(3):171-194. https://doi.org/10.5140/JASS.2024.41.3.171 HTML PDF PubReader Last 3 months views: 1279	Technical Paper Korea Pathfinder Lunar Orbiter Magnetometer Instrument and Initial Data Processing Wooin Jo, Ho Jin, Hyeonhu Park, Yunho Jang, Seongwhan Lee, Khan-Hyuk Kim, Ian Garrick-Bethell, Jehyuck Shin, Seul-Min Baek, Junhyun Lee, Derac Son, Eunhyeuk Kim J. Astron. Space Sci. 2023;40(4):199-215. https://doi.org/10.5140/JASS.2023.40.4.199 HTML PDF PubReader Last 3 months views: 863
Technical Paper Geostationary Satellite Station Keeping Robustness to Loss of Ground Control Hyung Je Woo, Bjorn Buckwalter Journal of Astronomy and Space Sciences 2021;38(1):65-82. https://doi.org/10.5140/JASS.2021.38.1.65 HTML PDF PubReader Last 3 months views: 723	Technical Paper Initial Results of Low Earth Orbit Space Radiation Dosimeter on Board the Next Generation Small Satellite-2 Uk-Won Nam, Won-Kee Park, Sukwon Youn, Jaeyoung Kwak, Jongdae Sohn, Bongkon Moon, Jaejin Lee, Young-Jun Choi, Jungho Kim, Sunghwan Kim, Hongjoo Kim, Hwanbae Park, Sung-Joon Ye, Hongyoung Park, Taeseong Jang J. Astron. Space Sci. 2024;41(3):195-208. https://doi.org/10.5140/JASS.2024.41.3.195 HTML PDF PubReader Last 3 months views: 683
Research Paper Classification of Gravitational Waves from Black Hole-Neutron Star Mergers with Machine Learning Nurzhan Ussipov, Zeinulla Zhanabaev, Almat Akhmetali, Marat Zaidyn, Dana Turlykozhayeva, Aigerim Akniyazova, Timur Namazbayev J. Astron. Space Sci. 2024;41(3):149-158. https://doi.org/10.5140/JASS.2024.41.3.149 HTML PDF PubReader Last 3 months views: 656	Review Paper Long-Term Science Goals with In Situ Observations at the Sun-Earth Lagrange Point L4 Dae-Young Lee, Rok-Soon Kim, Kyung-Eun Choi, Jungjoon Seough, Junga Hwang, Dooyoung Choi, Ji-Hyeon Yoo, Seunguk Lee, Sung Jun Noh, Jongho Seon, Kyung-Suk Cho, Kwangsun Ryu, Khan-Hyuk Kim, Jong-Dae Sohn, Jae-Young Kwak, Peter H. Yoon J. Astron. Space Sci. 2024;41(1):1-15. https://doi.org/10.5140/JASS.2024.41.1.1 HTML PDF PubReader Last 3 months views: 653
Research Paper Performance Test of Search Coil Sensors with Different Core Types Hyeonji Kang, Ho Jin, Yunho Jang, Seungmin Lee, Hyeonhu Park, Juhyeong Kim, Wooin Jo J. Astron. Space Sci. 2024;41(3):139-148. https://doi.org/10.5140/JASS.2024.41.3.139 HTML PDF PubReader Last 3 months views: 639	Technical Paper Korea Pathfinder Lunar Orbiter (KPLO) Operation: From Design to Initial Results Moon-Jin Jeon, Young-Ho Cho, Eunhyeuk Kim, Dong-Gyu Kim, Young-Joo Song, SeungBum Hong, Jonghee Bae, Jun Bang, Jo Ryeong Yim, Dae-Kwan Kim J. Astron. Space Sci. 2024;41(1):43-60. https://doi.org/10.5140/JASS.2024.41.1.43 HTML PDF PubReader Last 3 months views: 625
Research Paper Design of Regional Coverage Low Earth Orbit (LEO) Constellation with Optimal Inclination Jinyoung Shin, Sang-Young Park, Jihae Son, Sung-Chan Song Journal of Astronomy and Space Sciences 2021;38(4):217-227. https://doi.org/10.5140/JASS.2021.38.4.217 HTML PDF PubReader Last 3 months views: 596	Technical Paper ShadowCam Instrument and Investigation Overview Mark Southwick Robinson, Scott Michael Brylow, Michael Alan Caplinger, Lynn Marie Carter, Mattew John Clark, Brett Wilcox Denevi, Nicholas Michael Estes, David Carl Humm, Prasun Mahanti, Douglas Arden Peckham, Michael Andrew Ravine, Jacob Andrieu Schaffner, Emerson Jacob Speyerer, Robert Vernon Wagner J. Astron. Space Sci. 2023;40(4):149-171. https://doi.org/10.5140/JASS.2023.40.4.149 HTML PDF PubReader Last 3 months views: 588

MOST CITED ARTICLES

Research Paper Tomography Reconstruction of Ionospheric Electron Density with Empirical Orthonormal Functions Using Korea GNSS Network Junseok Hong, Yong Ha Kim, Jong-Kyun Chung, Nicholas Ssessanga, Young-Sil Kwak J. Astron. Space Sci. 2017;34(1):7-17. https://doi.org/10.5140/JASS.2017.34.1.7 HTML PDF PubReader Cited by 19	Research Paper A Study on Re-entry Predictions of Uncontrolled Space Objects for Space Situational Awareness Eun-Jung Choi, Sungki Cho, Deok-Jin Lee, Siwoo Kim, Jung Hyun Jo J. Astron. Space Sci. 2017;34(4):289-302. https://doi.org/10.5140/JASS.2017.34.4.289 HTML PDF PubReader Cited by 15
Research Paper Performance Analysis of DPSK Optical Communication for LEO-to-Ground Relay Link Via a GEO Satellite Hyung-Chul Lim, Jong Uk Park, Mansoo Choi, Chul-Sung Choi, Jae-Dong Choi, Jongah Kim J. Astron. Space Sci. 2020;37(1):11-18. https://doi.org/10.5140/JASS.2020.37.1.11 HTML PDF PubReader Cited by 13	Technical Paper Observations of the Polar Ionosphere by the Vertical Incidence Pulsed Ionospheric Radar at Jang Bogo Station, Antarctica Young-Bae Ham, Geonhwa Jee, Changsup Lee, Hyuk-Jin Kwon, Jeong-Han Kim, Nikolay Zabotin, Terence Bullett J. Astron. Space Sci. 2020;37(2):143-156. https://doi.org/10.5140/JASS.2020.37.2.143 HTML PDF PubReader Cited by 13
Technical Paper Ground Tracking Support Condition Effect on Orbit Determination for Korea Pathfinder Lunar Orbiter (KPLO) in Lunar Orbit Young-Rok Kim, Young-Joo Song, Jae-ik Park, Donghun Lee, Jonghee Bae, SeungBum Hong, Dae-Kwan Kim, Sang-Ryool Lee J. Astron. Space Sci. 2020;37(4):237-247. https://doi.org/10.5140/JASS.2020.37.4.237 HTML PDF PubReader Cited by 13	Research Paper Orbit Determination of KOMPSAT-1 and Cryosat-2 Satellites Using Optical Wide-field Patrol Network (OWL-Net) Data with Batch Least Squares Filter Eunji Lee, Sang-Young Park, Bumjoon Shin, Sungki Cho, Eun-Jung Choi, Junghyun Jo, Jang-Hyun Park J. Astron. Space Sci. 2017;34(1):19-30. https://doi.org/10.5140/JASS.2017.34.1.19 HTML PDF PubReader Cited by 12
Technical Paper A Deep Space Orbit Determination Software: Overview and Event Prediction Capability Youngkwang Kim, Sang-Young Park, Eunji Lee, Minsik Kim J. Astron. Space Sci. 2017;34(2):139-151. https://doi.org/10.5140/JASS.2017.34.2.139 HTML PDF PubReader Cited by 12	Technical Paper Installation of Neutron Monitor at the Jang Bogo Station in Antarctica Jongil Jung, Suyeon Oh, Yu Yi, Paul Evenson, Roger Pyle, Geonhwa Jee, Jeong-Han Kim, Changsup Lee, Jongdae Sohn J. Astron. Space Sci. 2016;33(4):345-348. https://doi.org/10.5140/JASS.2016.33.4.345 HTML PDF PubReader Cited by 11
Technical Paper Development, Demonstration and Validation of the Deep Space Orbit Determination Software Using Lunar Prospector Tracking Data Eunji Lee, Youngkwang Kim, Minsik Kim, Sang-Young Park J. Astron. Space Sci. 2017;34(3):213-223. https://doi.org/10.5140/JASS.2017.34.3.213 HTML PDF PubReader Cited by 11	Research Paper Performance Analysis of Sensor Systems for Space Situational Awareness Eun-Jung Choi, Sungki Cho, Jung Hyun Jo, Jang-Hyun Park, Taejin Chung, Jaewoo Park, Hocheol Jeon, Ami Yun, Yonghui Lee J. Astron. Space Sci. 2017;34(4):303-313. https://doi.org/10.5140/JASS.2017.34.4.303 HTML PDF PubReader Cited by 9