Search Results - "Quémerais, E."

A survey of water production in 61 comets from SOHO/SWAN observations of hydrogen Lyman-alpha: Twenty-one years 1996–2016 by Combi, M.R., Mäkinen, T.T., Bertaux, J.-L., Quémerais, E., Ferron, S.

“…•Water production rates from 3700 SOHO/SWAN H Ly-α images of 61 comets.•Determined pre- and post-perihelion power-law heliocentric distance…”
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The Direction of the Flow of Interstellar Neutral H Based on Photometric Observations from SOHO/SWAN by Bzowski, M., Kubiak, M. A., Strumik, M., Kowalska-Leszczynska, I., Porowski, C., Quémerais, E.

“…Abstract Interstellar neutral hydrogen flows into the heliosphere as a mixture of the primary and secondary populations from two somewhat different directions…”
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Seasonal Variation of Saturn's Lyα Brightness by Stephenson, P., Koskinen, T. T., Brown, Z., Quémerais, E., Lavvas, P., Moses, J. I., Sandel, B., Yelle, R.

“…Abstract We examine Saturn’s nonauroral (dayglow) emissions at Ly α observed by the Cassini/Ultraviolet Imaging Spectrograph (UVIS) instrument from 2003 until…”
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Global Distribution of the Solar Wind Flux and Velocity From SOHO/SWAN During SC‐23 and SC‐24 by Koutroumpa, D., Quémerais, E., Ferron, S., Schmidt, W.

“…We analyze SOHO (SOlar Heliospheric Observatory)/SWAN (Solar Wind ANisotropy) hydrogen Lyman‐α data collected between 1996 and 2018 to derive the solar wind…”
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SWAN/SOHO Lyman‐α Mapping: The Hydrogen Geocorona Extends Well Beyond the Moon by Baliukin, I. I., Bertaux, J.‐L., Quémerais, E., Izmodenov, V. V., Schmidt, W.

“…The Earth's hydrogen exosphere Lyman‐α radiation was mapped with the Solar Wind Anisotropies/Solar and Heliospheric Observatory (SWAN/SOHO) instrument in…”
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Interplanetary Hydrogen Properties Observed From Mars by Mayyasi, M., Quémerais, E., Koutroumpa, D., Baliukin, I., Titova, A., Izmodenov, V., Clarke, J., Deighan, J., Schneider, N., Curry, S.

“…Observations of the Lyman‐α emissions from Interplanetary Hydrogen (IPH) atoms are made from Mars' orbit using a high spectral resolution instrument in echelle…”
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Water production activity of nine long-period comets from SOHO/SWAN observations of hydrogen Lyman-alpha: 2013–2016 by Combi, M.R., Mäkinen, T.T., Bertaux, J.-L., Quémerais, E., Ferron, S., Avery, M., Wright, C.

“…•SOHO SWAN obtained 885 images of H Lyman-α 9 dynamically new and long period comets.•Water production rates were calculated for all comets.•Pre- and…”
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Voyager 1/UVS Lyman α Measurements at the Distant Heliosphere (90–130 AU): Unknown Source of Additional Emission by Katushkina, O. A., Quémerais, E., Izmodenov, V. V., Lallement, R., Sandel, B. R.

“…In this work, we present for the first time the Lyman α intensities measured by Voyager 1/UVS in 2003–2014 (at 90–130 AU from the Sun). During this period…”
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Mg Exosphere of Mercury Observed by PHEBUS Onboard BepiColombo During Its Second and Third Swing‐Bys by Suzuki, Y., Quémerais, E., Chaufray, J.‐Y., Robidel, R., Murakami, G., Leblanc, F., Yoshioka, K., Yoshikawa, I., Korablev, O.

“…Mercury's exosphere is an important target for understanding the dynamics of coupled systems in space environments, tenuous planetary atmospheres, and…”
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Mercury's Exosphere as Seen by BepiColombo/PHEBUS Visible Channels During the First Two Flybys by Robidel, R., Quémerais, E., Chaufray, J. Y., Koutroumpa, D., Leblanc, F., Reberac, A., Yoshikawa, I., Yoshioka, K., Murakami, G., Korablev, O., Belyaev, D., Pelizzo, M. G., Corso, A. J.

“…BepiColombo, the ESA/JAXA joint mission performed its first flyby of Mercury on 1 October 2021 and its second on 23 June 2022. PHEBUS observed the exosphere of…”
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Velocity Profiles in the Solar Corona from Multi-Instrument Observations by Quémerais, E, Lallement, R, Koutroumpa, D, Lamy, P

“…We present a method to derive outflow velocities in the solar corona using different data sets, including solar wind mass flux coming from the SWAN SOHO…”
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Comet 41P/Tuttle-Giacobini-Kresak, 45P/Honda-Mrkos-Pajdusakova, and 46P/Wirtanen: Water Production Activity over 21 Years with SOHO/SWAN by Combi, M R, Mäkinen, T, Bertaux, J-L, Quémerais, E, Ferron, S, Coronel, R

“…In 2017, 2018, and 2019, comets 46P/Wirtanen, 45P/Honda-Mrkos-Pajdusakova, and 41P/Tuttle-Giacobini-Kresak all had perihelion passages. Their hydrogen comae…”
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Deflection of the Interstellar Neutral Hydrogen Flow Across the Heliospheric Interface by Lallement, R, Quémerais, E, Bertaux, J. L, Ferron, S, Koutroumpa, D, Pellinen, R

“…Using an absorption cell, we measured the Doppler shifts of the interstellar hydrogen resonance glow to show the direction of the neutral hydrogen flow as it…”
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BepiColombo - Mission Overview and Science Goals by Benkhoff, J., Murakami, G., Baumjohann, W., Besse, S., Bunce, E., Casale, M., Cremosese, G., Glassmeier, K.-H., Hayakawa, H., Heyner, D., Hiesinger, H., Huovelin, J., Hussmann, H., Iafolla, V., Iess, L., Kasaba, Y., Kobayashi, M., Milillo, A., Mitrofanov, I. G., Montagnon, E., Novara, M., Orsini, S., Quemerais, E., Reininghaus, U., Saito, Y., Santoli, F., Stramaccioni, D., Sutherland, O., Thomas, N., Yoshikawa, I., Zender, J.

“…BepiColombo is a joint mission between the European Space Agency, ESA, and the Japanese Aerospace Exploration Agency, JAXA, to perform a comprehensive…”
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A rapid decrease of the hydrogen corona of Mars by Clarke, J. T., Bertaux, J.-L., Chaufray, J.-Y., Gladstone, G. R., Quemerais, E., Wilson, J. K., Bhattacharyya, D.

“…Mars is believed to have lost much of its surface water 3.5 billion years ago, but the amounts that escaped into space and remain frozen in the crust today are…”
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Water production rates from SOHO/SWAN observations of comets C/2020 S3 (Erasmus), C/2021 A1 (Leonard) and C/2021 O3 (PanSTARRS) by Combi, M.R., Mäkinen, T., Bertaux, J.-L., Quémerais, E., Ferron, S.

“…In 2021 and 2022 the hydrogen comae of three long period comets, C/2020 S3 (Erasmus), C/2021 A1 (Leonard) and C/2021 O3 (PanSTARRS) were observed with the…”
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Coronal mass ejections and solar wind mass fluxes over the heliosphere during solar cycles 23 and 24 (1996–2014) by Lamy, P., Floyd, O., Quémerais, E., Boclet, B., Ferron, S.

“…Coronal mass ejections (CMEs) play a major role in the heliosphere, and their contribution to the solar wind mass flux, already considered in the Skylab and…”
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Investigating Mercury's Environment with the Two-Spacecraft BepiColombo Mission by Milillo, A., Fujimoto, M., Murakami, G., Benkhoff, J., Zender, J., Aizawa, S., Dósa, M., Griton, L., Heyner, D., Ho, G., Imber, S. M., Jia, X., Karlsson, T., Killen, R. M., Laurenza, M., Lindsay, S. T., McKenna-Lawlor, S., Mura, A., Raines, J. M., Rothery, D. A., André, N., Baumjohann, W., Berezhnoy, A., Bourdin, P. A., Bunce, E. J., Califano, F., Deca, J., Fuente, S. de la, Dong, C., Grava, C., Fatemi, S., Henri, P., Ivanovski, S. L., Jackson, B. V., James, M., Kallio, E., Kasaba, Y., Kilpua, E., Kobayashi, M., Langlais, B., Leblanc, F., Lhotka, C., Mangano, V., Martindale, A., Massetti, S., Masters, A., Morooka, M., Narita, Y., Oliveira, J. S., Odstrcil, D., Orsini, S., Pelizzo, M. G., Plainaki, C., Plaschke, F., Sahraoui, F., Seki, K., Slavin, J. A., Vainio, R., Wurz, P., Barabash, S., Carr, C. M., Delcourt, D., Glassmeier, K.-H., Grande, M., Hirahara, M., Huovelin, J., Korablev, O., Kojima, H., Lichtenegger, H., Livi, S., Matsuoka, A., Moissl, R., Moncuquet, M., Muinonen, K., Quèmerais, E., Saito, Y., Yagitani, S., Yoshikawa, I., Wahlund, J.-E.

“…The ESA-JAXA BepiColombo mission will provide simultaneous measurements from two spacecraft, offering an unprecedented opportunity to investigate…”
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Comet 41P/Tuttle-Giacobini-Kresak, 45P/Honda-Mrkos-Pajdusakova, and 46P/Wirtanen: Water Production Activity over 21 yr with SOHO/SWAN by Combi, M. R., Mäkinen, T., Bertaux, J.-L., Quémerais, E., Ferron, S., Coronel, R.

“…In 2017, 2018, and 2019, comets 46P/Wirtanen, 45P/Honda-Mrkos-Pajdusakova, and 41P/Tuttle-Giacobini-Kresak all had perihelion passages. Their hydrogen comae…”
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Remote diagnostic of the hydrogen wall through measurements of the backscattered solar Lyman alpha radiation by Voyager 1/UVS in 1993–2003 by Katushkina, O. A., Quémerais, E., Izmodenov, V. V., Alexashov, D. B., Sandel, B. R.

“…We perform a new analysis of the Lyman alpha data obtained by Voyager 1 during the spatial scans in 1993–2003 while Voyager 1 was at 53–88 AU from the Sun…”
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