Results from radiation environment measurements aboard ExoMars Trace Gas Orbiter in Mars science orbit in May 2018–December 2019

Semkova, Jordanka; Koleva, R.; Benghin, Victor; Dachev, Tsvetan; Matviichuk, Yuri; Tomov, B.; Krastev, Krasimir; Maltchev, Stephan; Dimitrov, Petar; Bankov, N.; Митрофанов, И. Г.; Malakhov, A. V.; Golovin, D. V.; Мокроусов, М. И.; Санин, А. Б.; Litvak, M. L.; Kozyrev, A.; Nikiforov, Sergey; Lisov, Denis; Anikin, A. A.; Shurshakov, Vyacheslav; Drobyshev, Sergey

doi:10.1016/j.icarus.2020.114264

Cited by 15 publications

(8 citation statements)

References 30 publications

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“…Recent studies have also analyzed data from Mars Express [Knutsen et al, 2021]. The ExoMars TGO spacecraft launched in April 2016 carries the FREND instrument, one module of the latter being the Liulin-MO dosimeter [Mitrofanov et al, 2018], that has provided and providing in-situ measurements of the radiation environment during the TGO interplanetary travel and in Martian orbit [Semkova et al, , 2021. Since May 2018 Liulin-MO investigates the radiation conditions in Mars Science Orbit (MSO).…”

Section: Discussionmentioning

confidence: 99%

“…Since September 2020 a decrease of the dose rates and fluxes is seen corresponding to the increasing phase of the 25 th solar cycle. [Semkova et al, 2021] Until July 2021 the dosimeter measured the dosimetric parameters of GCR. No solar particle events (SPE) were registered.…”

Section: Particle Fluxes and Dose Rates From Gcr In The Period May 20...mentioning

confidence: 99%

“…Figure 1. A schematic view of Liulin-MO detectors' location in the dosimeter box[Semkova et al, 2021] …”

mentioning

confidence: 99%

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Fourteenth Workshop Solar Influences on the Magnetosphere, Ionosphere and Atmosphere

2022

Fourteenth Workshop Solar Influences on the Magnetosphere, Ionosphere and Atmosphere

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The Fourteenth Workshop "Solar Influences on the Magnetosphere, Ionosphere and Atmosphere" was held from June 6 to 10, 2022 in Primorsko, Bulgaria. 52 scientists from 12 countries participated in the workshop with 50 oral and poster presentations. 12 papers are included in these Proceedings.The Scientific Organizing Committee and the Editors of the Proceedings thank all the participants in the Workshop and contributors to the Proceedings.

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Section: Discussionmentioning

confidence: 99%

Section: Particle Fluxes and Dose Rates From Gcr In The Period May 20...mentioning

confidence: 99%

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Fourteenth Workshop Solar Influences on the Magnetosphere, Ionosphere and Atmosphere

2022

Fourteenth Workshop Solar Influences on the Magnetosphere, Ionosphere and Atmosphere

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“…TGO was inserted into Mars science orbit (circular orbit with about 400 km altitude, 74 0 inclination, ~ 2 hours orbit period) on 9 April 2018. On 16 April 2018 Liulin-MO was switched on and since then operates almost continuously (Semkova et al, 2021). Тhe relatively short period of our data obtained in Mars orbit (three years) allows us to trace only part of the 11-year variation of galactic cosmic rays, but it allows us to observe short term variations in the charged particles flux, caused by large-scale disturbances of the solar wind (Forbush effect).…”

Section: Introductionmentioning

confidence: 94%

“Obstanovka” experiment on determining spacecraft surface charging aboard the International Space Station

2021

Тhirteenth Workshop Solar Influences on the Magnetosphere, Ionosphere and Atmosphere

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Aiming at earthquake precursors apportionment the earthquake preparation displays of VARDENIS (Armenia, 29.04.2008, M=3.7) BORISAKHO (Georgia, 09.06.08, M =4.1), NAKHITCEVAN (Azerbaijan, 02.09.2008, M=5.1), earthquakes in time-series have been studied using the geomagnetic and ionosphere tools. Aiming at earthquake forecasting the anomaly in the ionosphere plasma is investigated by a radio-astronomical method. There were received some results, allowing to make out the difference of seismogenic anomalies of ionosphere between the longer anomalies connected to magnetic activity of ionosphere by the method of vertical reconnaissance of ionosphere.

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“…[8][9][10] Based on the data recorded by the gamma-ray spectrometer and neutron spectrometer in previous Mars detectors, researchers have studied the variation, distribution, and even the dose of Mars orbit. [11][12][13][14][15] However, on-orbit electrical performance degradation of solar array induced by the fixed charge particles radiation in Mars orbit has not been seen.…”

Section: Introductionmentioning

confidence: 99%

On‐Orbit Performance Analysis of Solar Array in Mars Orbit Based on Tianwen‐1 Orbiter

Yang

Zhao

et al. 2023

Solar RRL

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Herein, the on‐orbit performance of the solar array in Mars orbit based on the Tianwen‐1 Orbiter is analyzed. Different portions divided by the flight orbit and power output of the solar array are illustrated in detail, including Mars capture orbit, parking orbit, relay and survey orbit, and global reconnaissance orbit. Photogenerated currents generally exhibit dramatic variation ascribed to the Sun‐Orbiter distance. Radiation degradation of the solar array on Mars orbit is analyzed after calibrating by the incident light intensity and working temperature. The daily degradation coefficient of photogenerated current is calculated to be 10 000, indicating the friendly radiation environment on Mars orbit. Besides, current enhancement of about 0.32 A and temperature enhancement range 12.5–35.3 °C induced by Mars‐shine are observed since parking orbit. The temperature of the Mars orbit is also studied in this article. The ultralow temperature of −180 °C in shadow conditions proposes an enormous challenge for the solar array. The present work will be helpful to deepen the understanding of Mars orbit and provide reference to the solar array design for Mars exploration spacecraft.

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Results from radiation environment measurements aboard ExoMars Trace Gas Orbiter in Mars science orbit in May 2018–December 2019

Cited by 15 publications

References 30 publications

Fourteenth Workshop Solar Influences on the Magnetosphere, Ionosphere and Atmosphere

Fourteenth Workshop Solar Influences on the Magnetosphere, Ionosphere and Atmosphere

“Obstanovka” experiment on determining spacecraft surface charging aboard the International Space Station

On‐Orbit Performance Analysis of Solar Array in Mars Orbit Based on Tianwen‐1 Orbiter

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