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309 results on '"Langlais, B"'

1. Investigating Mercury's Environment with the Two-Spacecraft BepiColombo Mission

Author

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., de la Fuente, S., 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., and Wahlund, J. -E.

Subjects
Astrophysics - Earth and Planetary Astrophysics, Astrophysics - Instrumentation and Methods for Astrophysics
Abstract

The ESA-JAXA BepiColombo mission will provide simultaneous measurements from two spacecraft, offering an unprecedented opportunity to investigate magnetospheric and exospheric dynamics at Mercury as well as their interactions with the solar wind, radiation, and interplanetary dust. Many scientific instruments onboard the two spacecraft will be completely, or partially devoted to study the near-space environment of Mercury as well as the complex processes that govern it. Many issues remain unsolved even after the MESSENGER mission that ended in 2015. The specific orbits of the two spacecraft, MPO and Mio, and the comprehensive scientific payload allow a wider range of scientific questions to be addressed than those that could be achieved by the individual instruments acting alone, or by previous missions. These joint observations are of key importance because many phenomena in Mercury's environment are highly temporally and spatially variable. Examples of possible coordinated observations are described in this article, analysing the required geometrical conditions, pointing, resolutions and operation timing of different BepiColombo instruments sensors., Comment: 78 pages, 14 figures, published

Published
2022
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3. Results from InSight Robotic Arm Activities

Author

Golombek, M., Hudson, T., Bailey, P., Balabanska, N., Marteau, E., Charalambous, C., Baker, M., Lemmon, M., White, B., Lorenz, R. D., Spohn, T., Maki, J., Kallemeyn, P., Garvin, J. B., Newman, C., Hurst, K., Murdoch, N., Williams, N., Banerdt, W. B., Lognonné, P., Delage, P., Lapeyre, R., Gaudin, E., Yana, C., Verdier, N., Panning, M., Trebi-Ollennu, A., Ali, K., Mittelholz, A., Johnson, C., Langlais, B., Warner, N., Grant, J., Daubar, I. J., Ansan, V., Vrettos, C., Spiga, A., Banfield, D., Gomez, A., Mishra, P., Dotson, R., Krause, C., Sainton, G., and Gabsi, T.

Published
2023
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6. International Geomagnetic Reference Field: the thirteenth generation

Author

Alken, P., Thébault, E., Beggan, C. D., Amit, H., Aubert, J., Baerenzung, J., Bondar, T. N., Brown, W. J., Califf, S., Chambodut, A., Chulliat, A., Cox, G. A., Finlay, C. C., Fournier, A., Gillet, N., Grayver, A., Hammer, M. D., Holschneider, M., Huder, L., Hulot, G., Jager, T., Kloss, C., Korte, M., Kuang, W., Kuvshinov, A., Langlais, B., Léger, J.-M., Lesur, V., Livermore, P. W., Lowes, F. J., Macmillan, S., Magnes, W., Mandea, M., Marsal, S., Matzka, J., Metman, M. C., Minami, T., Morschhauser, A., Mound, J. E., Nair, M., Nakano, S., Olsen, N., Pavón-Carrasco, F. J., Petrov, V. G., Ropp, G., Rother, M., Sabaka, T. J., Sanchez, S., Saturnino, D., Schnepf, N. R., Shen, X., Stolle, C., Tangborn, A., Tøffner-Clausen, L., Toh, H., Torta, J. M., Varner, J., Vervelidou, F., Vigneron, P., Wardinski, I., Wicht, J., Woods, A., Yang, Y., Zeren, Z., and Zhou, B.

Published
2021
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8. The BepiColombo Planetary Magnetometer MPO-MAG: What Can We Learn from the Hermean Magnetic Field?

Author

Heyner, D., Auster, H.-U., Fornaçon, K.-H., Carr, C., Richter, I., Mieth, J. Z. D., Kolhey, P., Exner, W., Motschmann, U., Baumjohann, W., Matsuoka, A., Magnes, W., Berghofer, G., Fischer, D., Plaschke, F., Nakamura, R., Narita, Y., Delva, M., Volwerk, M., Balogh, A., Dougherty, M., Horbury, T., Langlais, B., Mandea, M., Masters, A., Oliveira, J. S., Sánchez-Cano, B., Slavin, J. A., Vennerstrøm, S., Vogt, J., Wicht, J., and Glassmeier, K.-H.

Published
2021
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10. Investigating Mercury’s Environment with the Two-Spacecraft BepiColombo Mission

Author

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., de la Fuente, S., 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., and Wahlund, J.-E.

Published
2020
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18. Evaluating Treatment Tolerability Using the Toxicity Index With Patient-Reported Outcomes Data

Author

Scher, H.I., Heon, N., Basch, E., Langlais, B., Rogak, L.J., Ginos, B., Schwab, G., Ganz, P.A., Mazza, G.L., Thanarajasingam, G., and Dueck, A.C.

Abstract

Context: Summarizing longitudinal symptomatic adverse events during clinical trials is necessary for understanding treatment tolerability. The Patient-Reported Outcomes version of the Common Terminology Criteria for Adverse Events (PRO-CTCAE) provides insight for capturing treatment tolerability within trials. Tolerability summary measures, such as the maximum score, are often used to communicate the potential negative symptoms both in the medical literature and directly to patients. Commonly, the proportions of present and severe symptomatic adverse events are used and reported between treatment arms among adverse event types. The toxicity index is also a summary measure previously applied to clinician-reported CTCAE data. Objectives: Apply the toxicity index to PRO-CTCAE data from the COMET-2 trial alongside the maximum score, then present and discuss considerations for using the toxicity index as a summary measure for communicating tolerability to patients and clinicians. Methods: Proportions of maximum PRO-CTCAE severity levels and median toxicity index were computed by arm using all trial data and adjusting for baseline symptoms. Results: Group-wise statistical differences were similar whether using severity level proportions or the toxicity index. The impact of adjusting for baseline symptoms was equivalently seen when comparing arms using severity rates or the toxicity index. Conclusion: The toxicity index is a useful method when ranking patients from those with the least to most symptomatic adverse event burden. This study showed the toxicity index can be applied to PRO-CTCAE data. Though as a tolerability summary measure, further study is needed to provide a clear clinical or patient-facing interpretation of the toxicity index.

Published
2022
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23. International Geomagnetic Reference Field: the thirteenth generation

Author

Alken, P, Thébault, E, Beggan, C.D., Amit, H, Aubert, J, Baerenzung, J, Bondar, T N, Brown, W.J., Califf, S, Chambodut, A, Chulliat, A, Cox, G.A., Finlay, C C, Fournier, A, Gillet, N, Grayver, A, Hammer, M D, Holschneider, M, Huder, L, Hulot, G, Jager, T, Kloss, C, Korte, M, Kuang, W, Kuvshinov, A, Langlais, B, Léger, J-M, Lesur, V, Livermore, P W, Lowes, F J, Macmillan, S., Magnes, W, Mandea, M, Marsal, S, Matzka, W, Metman, M, Minami, T, Morschhauser, A, Mound, J E, Nair, M, Nakano, S, Olsen, N, Pavón-Carrasco, F J, Petrov, V G, Ropp, G, Rother, M, Sabaka, T J, Sanchez, S, Saturnino, D, Schnepf, N R, Shen, X, Stolle, C, Tangborn, A, Tøffner-Clausen, L, Toh, H, Torta, J M, Varner, J, Vervelidou, F, Vigneron, P, Wardinski, I, Wicht, J, Woods, A, Yang, Y, Zeren, Z, Zhou, B, Alken, P, Thébault, E, Beggan, C.D., Amit, H, Aubert, J, Baerenzung, J, Bondar, T N, Brown, W.J., Califf, S, Chambodut, A, Chulliat, A, Cox, G.A., Finlay, C C, Fournier, A, Gillet, N, Grayver, A, Hammer, M D, Holschneider, M, Huder, L, Hulot, G, Jager, T, Kloss, C, Korte, M, Kuang, W, Kuvshinov, A, Langlais, B, Léger, J-M, Lesur, V, Livermore, P W, Lowes, F J, Macmillan, S., Magnes, W, Mandea, M, Marsal, S, Matzka, W, Metman, M, Minami, T, Morschhauser, A, Mound, J E, Nair, M, Nakano, S, Olsen, N, Pavón-Carrasco, F J, Petrov, V G, Ropp, G, Rother, M, Sabaka, T J, Sanchez, S, Saturnino, D, Schnepf, N R, Shen, X, Stolle, C, Tangborn, A, Tøffner-Clausen, L, Toh, H, Torta, J M, Varner, J, Vervelidou, F, Vigneron, P, Wardinski, I, Wicht, J, Woods, A, Yang, Y, Zeren, Z, and Zhou, B

Abstract

In December 2019, the International Association of Geomagnetism and Aeronomy (IAGA) Division V Working Group (V-MOD) adopted the thirteenth generation of the International Geomagnetic Reference Field (IGRF). This IGRF updates the previous generation with a definitive main field model for epoch 2015.0, a main field model for epoch 2020.0, and a predictive linear secular variation for 2020.0 to 2025.0. This letter provides the equations defining the IGRF, the spherical harmonic coefficients for this thirteenth generation model, maps of magnetic declination, inclination and total field intensity for the epoch 2020.0, and maps of their predicted rate of change for the 2020.0 to 2025.0 time period.

Published
2021

24. Mars environment and magnetic orbiter model payload

Author

Langlais, B., Leblanc, F., Fouchet, T., Barabash, S., Breuer, D., Chassefière, E., Coates, A., Dehant, V., Forget, F., Lammer, H., Lewis, S., Lopez-Valverde, M., Mandea, M., Menvielle, M., Pais, A., Paetzold, M., Read, P., Sotin, C., Tarits, P., Vennerstrom, S., Branduardi-Raymont, G., Cremonese, G., Merayo, J. G. M., Ott, T., Rème, H., Trotignon, J. G., and Walhund, J. E.

Published
2009
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25. Critical knowledge gaps in the Martian geological record: A rationale for regional-scale in situ exploration by rotorcraft mid-air deployment

Author

Rapin, William, primary, Fraeman, A., additional, Ehlmann, B. L., additional, Mittelholz, A., additional, Langlais, B., additional, Lillis, R., additional, Sautter, V., additional, Baratoux, D., additional, Payré, V., additional, Udry, A., additional, Horgan, B., additional, Flahaut, J., additional, Dromart, G., additional, Quantin-Nataf, C., additional, Mangold, N., additional, Maurice, S., additional, Keane, J. T., additional, and Bapst, J., additional

Published
2021
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26. Mars’ Ancient Dynamo and Crustal Remanent Magnetism

Author

Mittelholz, Anna, primary, Espley, J., additional, Connerney, J., additional, Fu, R., additional, Johnson, C. L., additional, Langlais, B., additional, Lillis, R. J., additional, Morschhauser, A., additional, Ravat, D., additional, Vervelidou, F., additional, Volk, M., additional, and Weiss, B. P., additional

Published
2021
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29. Towards magnetic sounding of Mars using diurnal variations

Author

Mittelholz, A., Johnson, Catherine L., Grimm, R., Haviland, H., Langlais, B., Lognonne, P., Plesa, Ana-Catalina, Rivoldini, A., Verhoeven, O, Smrekar, S., and Banerdt, B.

Subjects
electrical conductivity, Mars, magnetic sounding, InSight
Published
2020

37. First Results from the InSight Fluxgate Magnetometer: Constraints on Mars' Crustal Magnetic Field at the InSight Landing Site

Author

Johnson, Catherine L., Mittelholz, Anna, Langlais, B., Lognonne, P., Pike, W.T., Joy, S.P., Russel, C.T., Yu, Yanan, Fillingim, Matthew, Ansan, Veronique, Grott, Matthias, Krause, Christian, Spohn, Tilman, Smrekar, S., and Banerdt, B.

Subjects
Planetenphysik, Leitungsbereich PF, Mars, Magnetfeld, Nutzerzentrum für Weltraumexperimente (MUSC), InSight
Published
2019

38. Interpretation of a Magnetic Map of the Valles Marineris Region, Mars

Author

Purucker, M. E, Langlais, B, and Mandea, M

Subjects
Lunar And Planetary Science And Exploration
Abstract

A magnetic map of Valles Marineris is interpreted in terms of left-lateral faulting, the first evidence for substantial strike-slip faulting here. Surface exposures of highly magnetic material may exist in the walls of Valles Marineris. Additional information is contained in the original extended abstract.

Published
2001

43. International Geomagnetic Reference Field: the eleventh generation

Author

Finlay, C. C., Maus, S., Beggan, C. D., Bondar, T. N., Chambodut, A., Chernova, T. A., Chulliat, A., Golovkov, V. P., Hamilton, B., Hamoudi, M., Holme, R., Hulot, G., Kuang, W., Langlais, B., Lesur, V., Lowes, F. J., Lühr, H., Macmillan, S., Mandea, M., McLean, S., Manoj, C., Menvielle, M., Michaelis, I., Olsen, N., Rauberg, J., Rother, M., Sabaka, T. J., Tangborn, A., Tøffner-Clausen, L., Thébault, E., Thomson, A. W. P., Wardinski, I., Wei, Z., Zvereva, T. I., Finlay, C. C., Maus, S., Beggan, C. D., Bondar, T. N., Chambodut, A., Chernova, T. A., Chulliat, A., Golovkov, V. P., Hamilton, B., Hamoudi, M., Holme, R., Hulot, G., Kuang, W., Langlais, B., Lesur, V., Lowes, F. J., Lühr, H., Macmillan, S., Mandea, M., McLean, S., Manoj, C., Menvielle, M., Michaelis, I., Olsen, N., Rauberg, J., Rother, M., Sabaka, T. J., Tangborn, A., Tøffner-Clausen, L., Thébault, E., Thomson, A. W. P., Wardinski, I., Wei, Z., and Zvereva, T. I.

Abstract

The eleventh generation of the International Geomagnetic Reference Field (IGRF) was adopted in December 2009 by the International Association of Geomagnetism and Aeronomy Working Group V-MOD. It updates the previous IGRF generation with a definitive main field model for epoch 2005.0, a main field model for epoch 2010.0, and a linear predictive secular variation model for 2010.0-2015.0. In this note the equations defining the IGRF model are provided along with the spherical harmonic coefficients for the eleventh generation. Maps of the magnetic declination, inclination and total intensity for epoch 2010.0 and their predicted rates of change for 2010.0-2015.0 are presented. The recent evolution of the South Atlantic Anomaly and magnetic pole positions are also examined

Published
2017

46. A chronology of early Mars climatic evolution from impact crater degradation

Author

Mangold, N., Adeli, S., Conway, S., Ansan, V., Langlais, B., Laboratoire de Planétologie et Géodynamique [UMR 6112] (LPG), Université d'Angers (UA)-Université de Nantes - UFR des Sciences et des Techniques (UN UFR ST), and Université de Nantes (UN)-Université de Nantes (UN)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)

Subjects
[SDU.STU.PL]Sciences of the Universe [physics]/Earth Sciences/Planetology, Mars, [SDU.STU.GM]Sciences of the Universe [physics]/Earth Sciences/Geomorphology, impact crater
Abstract

International audience; The degradation of impact craters provides a powerful tool to analyze surface processes in the Martian past. Previous studies concluded that large impact craters (20-200 km in diameter) were strongly degraded by fluvial erosion during early Martian history. Our goal is to study the progression of crater degradation through time with a particular emphasis on the craters with alluvial fans and on the relative chronology of these craters. The geometric properties of 283 craters of >20 km in diameter were analyzed in two highlands of Mars, north of Hellas Planitia, and south of Margaritifer Terra, both known to contain craters with alluvial fans. Three classes were defined from morphology: strongly degraded craters with fluvial landforms and without ejecta (type I), gently degraded craters with fluvial landforms and preserved ejecta (type II), and fresh craters with ejecta and no fluvial landforms (type III). Our main result is that the type II craters that present alluvial fans have characteristics closer to fresh craters (type III) than degraded craters (type I). The distinctive degradation characteristics of these classes allowed us to determine a temporal distribution: Type I craters were formed and degraded between $4 Gyr and $3.7 Gyr and type II craters with alluvial fans were formed between Early Hesperian and Early Amazonian ($3.7 to $3.3 Gyr). This chronology is corroborated by crosscutting relationships of individual type II craters, which postdate Late Noachian valley networks. The sharp transition at $3.7 Gyr suggests a quick change in climatic conditions that could correspond to the cessation of the dynamo.

Published
2011
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47. A new and improved description of the Martian crustal magnetic field using both MGS-MAG and MGS-ER measurements

Author

Langlais, B., Purucker, M., Lillis, R., Laboratoire de Planétologie et Géodynamique [UMR 6112] (LPG), Université d'Angers (UA)-Université de Nantes - UFR des Sciences et des Techniques (UN UFR ST), and Université de Nantes (UN)-Université de Nantes (UN)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)

Subjects
[SDU.STU]Sciences of the Universe [physics]/Earth Sciences, ComputingMilieux_MISCELLANEOUS
Abstract

International audience

Published
2010

48. An improved model of the magnetic lithospheric field of Mars using both MGS-MAG and MGS-ER measurements

Author

Langlais, B., Lillis, R., Purucker, M., Laboratoire de Planétologie et Géodynamique [UMR 6112] (LPG), Université d'Angers (UA)-Université de Nantes - UFR des Sciences et des Techniques (UN UFR ST), and Université de Nantes (UN)-Université de Nantes (UN)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)

Subjects
[SDU.STU]Sciences of the Universe [physics]/Earth Sciences, ComputingMilieux_MISCELLANEOUS
Abstract

International audience

Published
2010

50. Probing Jupiter's moons' interiors with tidal deformation and magnetic fields

Author

Tobie, G., Amit, H., Grasset, O., Langlais, B., Feuvre M., Le, Mocquet, A., Verhoeven, O., Laboratoire de Planétologie et Géodynamique [UMR 6112] (LPG), Université d'Angers (UA)-Université de Nantes - UFR des Sciences et des Techniques (UN UFR ST), and Université de Nantes (UN)-Université de Nantes (UN)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)

Subjects
[SDU.STU]Sciences of the Universe [physics]/Earth Sciences, ComputingMilieux_MISCELLANEOUS
Abstract

International audience

Published
2010

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