Search

Your search keyword '"Larson, Davin"' showing total 372 results
Start Over Author "Larson, Davin"

Refine your results

372 results on '"Larson, Davin"'

101. Exploring the Solar Wind from Its Source on the Corona into the Inner Heliosphere during the First Solar Orbiter–Parker Solar Probe Quadrature

Author

Telloni, Daniele, primary, Andretta, Vincenzo, additional, Antonucci, Ester, additional, Bemporad, Alessandro, additional, Capuano, Giuseppe E., additional, Fineschi, Silvano, additional, Giordano, Silvio, additional, Habbal, Shadia, additional, Perrone, Denise, additional, Pinto, Rui F., additional, Sorriso-Valvo, Luca, additional, Spadaro, Daniele, additional, Susino, Roberto, additional, Woodham, Lloyd D., additional, Zank, Gary P., additional, Romoli, Marco, additional, Bale, Stuart D., additional, Kasper, Justin C., additional, Auchère, Frédéric, additional, Bruno, Roberto, additional, Capobianco, Gerardo, additional, Case, Anthony W., additional, Casini, Chiara, additional, Casti, Marta, additional, Chioetto, Paolo, additional, Corso, Alain J., additional, Da Deppo, Vania, additional, De Leo, Yara, additional, Dudok de Wit, Thierry, additional, Frassati, Federica, additional, Frassetto, Fabio, additional, Goetz, Keith, additional, Guglielmino, Salvo L., additional, Harvey, Peter R., additional, Heinzel, Petr, additional, Jerse, Giovanna, additional, Korreck, Kelly E., additional, Landini, Federico, additional, Larson, Davin, additional, Liberatore, Alessandro, additional, Livi, Roberto, additional, MacDowall, Robert J., additional, Magli, Enrico, additional, Malaspina, David M., additional, Massone, Giuseppe, additional, Messerotti, Mauro, additional, Moses, John D., additional, Naletto, Giampiero, additional, Nicolini, Gianalfredo, additional, Nisticò, Giuseppe, additional, Panasenco, Olga, additional, Pancrazzi, Maurizio, additional, Pelizzo, Maria G., additional, Pulupa, Marc, additional, Reale, Fabio, additional, Romano, Paolo, additional, Sasso, Clementina, additional, Schühle, Udo, additional, Stangalini, Marco, additional, Stevens, Michael L., additional, Strachan, Leonard, additional, Straus, Thomas, additional, Teriaca, Luca, additional, Uslenghi, Michela, additional, Velli, Marco, additional, Verscharen, Daniel, additional, Volpicelli, Cosimo A., additional, Whittlesey, Phyllis, additional, Zangrilli, Luca, additional, Zimbardo, Gaetano, additional, and Zuppella, Paola, additional

Published
2021
Full Text
View/download PDF

102. Characteristic Scales of Magnetic Switchback Patches Near the Sun and Their Possible Association With Solar Supergranulation and Granulation

Author

Fargette, Naïs, primary, Lavraud, Benoit, additional, Rouillard, Alexis P., additional, Réville, Victor, additional, Dudok De Wit, Thierry, additional, Froment, Clara, additional, Halekas, Jasper S., additional, Phan, Tai D., additional, Malaspina, David M., additional, Bale, Stuart D., additional, Kasper, Justin C., additional, Louarn, Philippe, additional, Case, Anthony W., additional, Korreck, Kelly E., additional, Larson, Davin E., additional, Pulupa, Marc, additional, Stevens, Michael L., additional, Whittlesey, Phyllis L., additional, and Berthomier, Matthieu, additional

Published
2021
Full Text
View/download PDF

103. Observations of Quiescent Solar Wind Regions with Near- f ce Wave Activity.

Author

Short, Benjamin, Malaspina, David M., Halekas, Jasper, Romeo, Orlando, Verniero, J. L., Finley, Adam J., Kasper, Justin C., Rahmati, Ali, Bale, Stuart D., Bonnell, John W., Case, Anthony W., de Wit, Thierry Dudok, Goetz, Keith, Goodrich, Katherine, Harvey, Peter R., Korreck, Kelly E., Larson, Davin, Livi, Roberto, MacDowall, Robert J., and Pulupa, Marc

Subjects
SOLAR wind, SOLAR magnetic fields, PLASMA waves, MAGNETIC declination, SOLAR temperature
Abstract

In situ measurements in the near-Sun solar wind from the Parker Solar Probe have revealed the existence of quiescent solar wind regions: extended regions of solar wind with low-amplitude turbulent magnetic field fluctuations compared to adjacent regions. Identified through the study of harmonic waves near the electron cyclotron frequency (f ce), these quiescent regions are shown to host a variety of plasma waves. The near- f ce harmonic waves are observed exclusively in quiescent regions, and as such, they can be used as markers for quiescent regions. A blob-finding algorithm is applied to data from Encounters 1â€"6 in order to identify near- f ce harmonic wave intervals and thereby locate quiescent regions. We carry out a superposed epoch analysis on the identified quiescent regions, and compare their bulk solar wind properties with adjacent regions of solar wind. Quiescent regions are found to contain relatively weak magnetic field variation and are entirely devoid of magnetic switchbacks. In the quiescent solar wind, the magnetic field closely follows the Parker spiral, while adjacent regions prefer more radial orientations, providing a clear picture of the magnetic geometry of these regions. Quiescent regions show minimal differences in multiple particle plasma parameters relative to the non-quiescent solar wind. The quiescent solar wind regions, studied throughout this work, are thought to represent the underlying solar wind, through which AlfvĂ©nic fluctuations propagate. Quantifying the properties of these regions may help to understand the formation/origin of the solar wind, and furthermore, to constrain the role that low-frequency AlfvĂ©n waves play in the regulation of solar wind temperature. [ABSTRACT FROM AUTHOR]

Published
2022
Full Text
View/download PDF

105. Why switchbacks may be related to solar granulation

Author

Fargette, Naïs, Lavraud, Benoit, Rouillard, Alexis, Réville, Victor, Phan, Tai, Bale, Stuart D., Dudok de Wit, Thierry, Froment, Clara, Kasper, Justin, Halekas, Jasper S., Louarn, Philippe, Case, Anthony W., Korreck, Kelly E., Larson, Davin E., Malaspina, David, Pulupa, Marc, Stevens, Michael L., Whittlesey, Phyllis L., Berthomier, Matthieu, Institut de recherche en astrophysique et planétologie (IRAP), Université Toulouse III - Paul Sabatier (UT3), Université de Toulouse (UT)-Université de Toulouse (UT)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire Midi-Pyrénées (OMP), Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3), Université de Toulouse (UT)-Université de Toulouse (UT)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France -Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France -Centre National de la Recherche Scientifique (CNRS), Laboratoire d'Astrophysique de Bordeaux [Pessac] (LAB), Université de Bordeaux (UB)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS), Laboratoire de Physique et Chimie de l'Environnement et de l'Espace (LPC2E), Observatoire des Sciences de l'Univers en région Centre (OSUC), Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université d'Orléans (UO)-Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université d'Orléans (UO)-Centre National de la Recherche Scientifique (CNRS)-Centre National d’Études Spatiales [Paris] (CNES), Laboratoire de Physique des Plasmas (LPP), Observatoire de Paris, and Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-École polytechnique (X)-Sorbonne Université (SU)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)

Subjects
[SDU]Sciences of the Universe [physics], Physics::Space Physics, Astrophysics::Solar and Stellar Astrophysics
Abstract

International audience; Parker Solar Probe data below 0.3 AU have revealed a near-Sun magnetic field dominated by Alfvénic structures that display back and forth reversals of the radial magnetic field. They are called magnetic switchbacks, they display no electron strahl variation consistent with magnetic field foldings within the same magnetic sector, and are associated with velocity spikes during an otherwise calmer background. They are thought to originate either at the photosphere through magnetic reconnection processes, or higher up in the corona and solar wind through turbulent processes.In this work, we analyze the spatial and temporal characteristic scales of these magnetic switchbacks. We define switchbacks as a deviation from the parker spiral direction and detect them automatically through perihelia encounters 1 to 6. We analyze the solid angle between the magnetic field and the parker spiral both over time and space. We perform a fast Fourier transformation to the obtained angle and find a periodical spatial variation with scales consistent with solar granulation. This suggests that switchbacks form near the photosphere and may be caused, or at least modulated, by solar convection.

Published
2021

106. Evolution of Solar Wind Turbulence from 0.1 to 1 au during the First Parker Solar Probe-Solar Orbiter Radial Alignment

Author

Telloni, Daniele, Sorriso-Valvo, Luca, Woodham, Lloyd D., Panasenco, Olga, Velli, Marco, Carbone, Francesco, Zank, Gary P., Bruno, Roberto, Perrone, Denise, Nakanotani, Masaru, Shi, Chen, D'Amicis, Raffaella, De Marco, Rossana, Jagarlamudi, Vamsee K., Steinvall, Konrad, Marino, Raffaele, Adhikari, Laxman, Zhao, Lingling, Liang, Haoming, Tenerani, Anna, Laker, Ronan, Horbury, Timothy S., Bale, Stuart D., Pulupa, Marc, Malaspina, David M., MacDowall, Robert J., Goetz, Keith, de Wit, Thierry Dudok, Harvey, Peter R., Kasper, Justin C., Korreck, Kelly E., Larson, Davin, Case, Anthony W., Stevens, Michael L., Whittlesey, Phyllis, Livi, Roberto, Owen, Christopher J., Livi, Stefano, Louarn, Philippe, Antonucci, Ester, Romoli, Marco, O'Brien, Helen, Evans, Vincent, Angelini, Virginia, Telloni, Daniele, Sorriso-Valvo, Luca, Woodham, Lloyd D., Panasenco, Olga, Velli, Marco, Carbone, Francesco, Zank, Gary P., Bruno, Roberto, Perrone, Denise, Nakanotani, Masaru, Shi, Chen, D'Amicis, Raffaella, De Marco, Rossana, Jagarlamudi, Vamsee K., Steinvall, Konrad, Marino, Raffaele, Adhikari, Laxman, Zhao, Lingling, Liang, Haoming, Tenerani, Anna, Laker, Ronan, Horbury, Timothy S., Bale, Stuart D., Pulupa, Marc, Malaspina, David M., MacDowall, Robert J., Goetz, Keith, de Wit, Thierry Dudok, Harvey, Peter R., Kasper, Justin C., Korreck, Kelly E., Larson, Davin, Case, Anthony W., Stevens, Michael L., Whittlesey, Phyllis, Livi, Roberto, Owen, Christopher J., Livi, Stefano, Louarn, Philippe, Antonucci, Ester, Romoli, Marco, O'Brien, Helen, Evans, Vincent, and Angelini, Virginia

Abstract

The first radial alignment between Parker Solar Probe and Solar Orbiter spacecraft is used to investigate the evolution of solar wind turbulence in the inner heliosphere. Assuming ballistic propagation, two 1.5 hr intervals are tentatively identified as providing measurements of the same plasma parcels traveling from 0.1 to 1 au. Using magnetic field measurements from both spacecraft, the properties of turbulence in the two intervals are assessed. Magnetic spectral density, flatness, and high-order moment scaling laws are calculated. The Hilbert-Huang transform is additionally used to mitigate short sample and poor stationarity effects. Results show that the plasma evolves from a highly Alfvenic, less-developed turbulence state near the Sun, to fully developed and intermittent turbulence at 1 au. These observations provide strong evidence for the radial evolution of solar wind turbulence.

Published
2021
Full Text
View/download PDF

107. Evolution of Solar Wind Turbulence from 0.1 to 1 au during the First Parker Solar Probe–Solar Orbiter Radial Alignment

Author

Telloni, Daniele, primary, Sorriso-Valvo, Luca, additional, Woodham, Lloyd D., additional, Panasenco, Olga, additional, Velli, Marco, additional, Carbone, Francesco, additional, Zank, Gary P., additional, Bruno, Roberto, additional, Perrone, Denise, additional, Nakanotani, Masaru, additional, Shi, Chen, additional, D’Amicis, Raffaella, additional, De Marco, Rossana, additional, Jagarlamudi, Vamsee K., additional, Steinvall, Konrad, additional, Marino, Raffaele, additional, Adhikari, Laxman, additional, Zhao, Lingling, additional, Liang, Haoming, additional, Tenerani, Anna, additional, Laker, Ronan, additional, Horbury, Timothy S., additional, Bale, Stuart D., additional, Pulupa, Marc, additional, Malaspina, David M., additional, MacDowall, Robert J., additional, Goetz, Keith, additional, de Wit, Thierry Dudok, additional, Harvey, Peter R., additional, Kasper, Justin C., additional, Korreck, Kelly E., additional, Larson, Davin, additional, Case, Anthony W., additional, Stevens, Michael L., additional, Whittlesey, Phyllis, additional, Livi, Roberto, additional, Owen, Christopher J., additional, Livi, Stefano, additional, Louarn, Philippe, additional, Antonucci, Ester, additional, Romoli, Marco, additional, O’Brien, Helen, additional, Evans, Vincent, additional, and Angelini, Virginia, additional

Published
2021
Full Text
View/download PDF

108. NanoSWARM: NanoSatellites for Space Weathering, Surface Water, Solar Wind, and Remanent Magnetism

Author

Garrick-Bethell, Ian, primary, Paige, David A., additional, Burton, Marcia, additional, Boland, Justin, additional, Abrahams, Jacob N. H., additional, Bogert, Carolyn van der, additional, Choi, Young-Jun, additional, Deca, Jan, additional, Hanna, Kerri Donaldson, additional, Farrell, William M., additional, Hemingway, Doug, additional, Hiesinger, Harald, additional, Jin, Ho, additional, Johnson, Brandon C., additional, Kaluna, Heather, additional, Kelley, Megan R., additional, Larson, Davin E., additional, Lawrence, David J., additional, Li, Shuai, additional, Ma, Yingjuan, additional, Maxwell, Rachel E., additional, Miller, Richard S., additional, Pieters, Carle M., additional, Poppe, Andrew R., additional, Ravat, Dhananjay, additional, Russell, Chris T., additional, Siegler, Matthew A., additional, Vernazza, Pierre, additional, and Weiss, Benjamin P., additional

Published
2021
Full Text
View/download PDF

109. Why switchbacks may be related to solar granulation 

Author

Fargette, Naïs, primary, Lavraud, Benoit, additional, Rouillard, Alexis, additional, Réville, Victor, additional, Phan, Tai, additional, Bale, Stuart D., additional, Dudok De Wit, Thierry, additional, Froment, Clara, additional, Kasper, Justin, additional, Halekas, Jasper S., additional, Louarn, Philippe, additional, Case, Anthony W., additional, Korreck, Kelly E., additional, Larson, Davin E., additional, Malaspina, David, additional, Pulupa, Marc, additional, Stevens, Michael L., additional, Whittlesey, Phyllis L., additional, and Berthomier, Matthieu, additional

Published
2021
Full Text
View/download PDF

110. Decomposition of the switchback boundary on MHD wave modes.

Author

Krasnoselskikh, Vladimir, primary, Larosa, Andrea, additional, Dudok de Wit, Thierry, additional, Agapitov, Oleksiy, additional, Froment, Clara, additional, Kretzschmar, Matthieu, additional, Jagarlamudi, Vamsee, additional, Velli, Marco, additional, Bale, Stuart D., additional, Goetz, Keith, additional, Harvey, Peter, additional, Kasper, Justin, additional, Korreck, Kelly, additional, Larson, Davin, additional, MacDowall, Robert, additional, Malaspina, David, additional, Mozer, Forrest, additional, Pulupa, Marc, additional, Reveillet, Claire, additional, and Stevens, Michael, additional

Published
2021
Full Text
View/download PDF

111. Plasma Waves Near the Electron Cyclotron Frequency in the Near Sun Solar Wind: Wave Mode Identification and Driving Instabilities

Author

Malaspina, David, primary, Wilson, Lynn, additional, Ergun, Robert, additional, Bale, Stuart, additional, Bonnell, John, additional, Dudok de Wit, Thierry, additional, Goetz, Keith, additional, Goodrich, Katherine, additional, Harvey, Peter, additional, MacDowall, Robert, additional, Pulupa, Marc, additional, Halekas, Jasper, additional, Case, Anthony, additional, Larson, Davin, additional, Stevens, Michael, additional, and Whittlesey, Phyllis, additional

Published
2021
Full Text
View/download PDF

112. Evidence of Subproton‐Scale Magnetic Holes in the Venusian Magnetosheath

Author

Goodrich, Katherine A., primary, Bonnell, John W., additional, Curry, Shannon, additional, Livi, Roberto, additional, Whittlesey, Phyllis, additional, Mozer, Forrest, additional, Malaspina, David, additional, Halekas, Jasper, additional, McManus, Michael, additional, Bale, Stuart, additional, Bowen, Trevor, additional, Case, Anthony, additional, Dudok de Wit, Thierry, additional, Goetz, Keith, additional, Harvey, Peter, additional, Kasper, Justin, additional, Larson, Davin, additional, MacDowall, Robert, additional, Pulupa, Marc, additional, and Stevens, Michael, additional

Published
2021
Full Text
View/download PDF

113. Electrostatic Waves with Rapid Frequency Shifts in the Solar Wind from PSP observations

Author

Kromyda, Lily, primary, Malaspina, David M., additional, Ergun, Robert E., additional, Halekas, Jasper, additional, Stevens, Michael L., additional, Verniero, Jennifer, additional, Chasapis, Alexandros, additional, Vech, Daniel, additional, Bale, Stuart D., additional, Bonnell, John W., additional, de Wit, Thierry Dudok, additional, Goetz, Keith, additional, Goodrich, Katherine, additional, Harvey, Peter R., additional, MacDowall, Robert J., additional, Pulupa, Marc, additional, Case, Anthony W., additional, Kasper, Justin C., additional, Korreck, Kelly E., additional, Larson, Davin, additional, Livi, Roberto, additional, and Whittlesey, Phyllis, additional

Published
2021
Full Text
View/download PDF

114. Whistler Waves at Venus's Quasi-Parallel Bow Shock

Author

Page, Brent, primary, Bowen, Trevor A, additional, Bale, Stuart D., additional, Bonnell, John W., additional, Case, Anthony William, additional, Dudok de Wit, Thierry, additional, Goetz, Keith, additional, Goodrich, Katherine Amanda, additional, Halekas, Jasper S., additional, Harvey, Peter R, additional, Kasper, Justin C., additional, Larson, Davin E., additional, MacDowall, Robert John, additional, Malaspina, David M., additional, Oka, Mitsuo, additional, Pulupa, Marc, additional, and Whittlesey, Phyllis, additional

Published
2020
Full Text
View/download PDF

115. Kinetic-Scale Turbulence in the Venusian Magnetosheath

Author

Bowen, Trevor A, primary, Bale, Stuart D., additional, Bandyopadhyay, Riddhi, additional, Bonnell, John W., additional, Case, Anthony William, additional, Chasapis, Alexandros, additional, Chen, Christopher, additional, Curry, Shannon M., additional, Dudok de Wit, Thierry, additional, Goetz, Keith, additional, Goodrich, Katherine Amanda, additional, Gruesbeck, Jacob R., additional, Halekas, Jasper S., additional, Harvey, Peter R, additional, Howes, Gregory Gershom, additional, Kasper, Justin C., additional, Korreck, Kelly, additional, Larson, Davin E., additional, Livi, Roberto, additional, MacDowall, Robert John, additional, Malaspina, David M., additional, Mallet, Alfred, additional, McManus, Michael D, additional, Page, Brent, additional, Pulupa, Marc, additional, Raouafi, Nour-Eddine, additional, Stevens, Michael Louis, additional, and Whittlesey, Phyllis, additional

Published
2020
Full Text
View/download PDF

116. Small-scale Magnetic Flux Ropes in the First Two Parker Solar Probe Encounters

Author

Chen, Yu, primary, Hu, Qiang, additional, Zhao, Lingling, additional, Kasper, Justin C., additional, Bale, Stuart D., additional, Korreck, Kelly E., additional, Case, Anthony W., additional, Stevens, Michael L., additional, Bonnell, John W., additional, Goetz, Keith, additional, Harvey, Peter R., additional, Klein, Kristopher G., additional, Larson, Davin E., additional, Livi, Roberto, additional, MacDowall, Robert J., additional, Malaspina, David M., additional, Pulupa, Marc, additional, and Whittlesey, Phyllis L., additional

Published
2020
Full Text
View/download PDF

117. ESCAPADE: Coordinated multipoint measurements of Mars' unique hybrid magnetosphere

Author

Lillis, Robert, primary, Curry, Shannon, additional, Luhmann, Janet, additional, Ma, Yingjuan, additional, Barjatya, Aroh, additional, Whittlesey, Phyllis, additional, Livi, Roberto, additional, Larson, Davin, additional, Xu, Shaosui, additional, Russell, Christopher, additional, Fowler, Christopher, additional, Brain, David, additional, Thiemann, Ed, additional, Withers, Paul, additional, Modolo, Ronan, additional, Harada, Yuki, additional, and Berthomier, Matthieu, additional

Published
2020
Full Text
View/download PDF

118. The Solar Wind Angular Momentum Flux as Observed by Parker Solar Probe

Author

Finley, Adam J., primary, Matt, Sean P., additional, Réville, Victor, additional, Pinto, Rui F., additional, Owens, Mathew, additional, Kasper, Justin C., additional, Korreck, Kelly E., additional, Case, A. W., additional, Stevens, Michael L., additional, Whittlesey, Phyllis, additional, Larson, Davin, additional, and Livi, Roberto, additional

Published
2020
Full Text
View/download PDF

119. Evidence of Sub-proton-scale Magnetic Holes in the Venusian Magnetosheath

Author

Goodrich, Katherine Amanda, primary, Bonnell, John W., additional, Curry, Shannon M., additional, Livi, Roberto, additional, Whittlesey, Phyllis, additional, Mozer, Forrest, additional, Pulupa, Marc, additional, Malaspina, David M., additional, Bale, Stuart d, additional, Bowen, Trevor A, additional, Case, Anthony William, additional, Dudok de Wit, Thierry, additional, Goetz, Keith, additional, Harvey, Peter R, additional, Halekas, Jasper S., additional, Kasper, Justin C., additional, Larson, Davin E., additional, MacDowall, Robert John, additional, McManus, Michael D, additional, and Stevens, Michael Louis, additional

Published
2020
Full Text
View/download PDF

120. Plasma Double Layers at the Boundary between Venus and the Solar Wind

Author

Malaspina, David M., primary, Goodrich, Katherine Amanda, additional, Livi, Roberto, additional, Halekas, Jasper S., additional, McManus, Michael D, additional, Curry, Shannon M., additional, Bale, Stuart D., additional, Bonnell, John W., additional, Dudok de Wit, Thierry, additional, Goetz, Keith, additional, Harvey, Peter R, additional, MacDowall, Robert John, additional, Pulupa, Marc, additional, Case, Anthony William, additional, Kasper, Justin, additional, Korreck, Kelly, additional, Larson, Davin E., additional, and Whittlesey, Phyllis, additional

Published
2020
Full Text
View/download PDF

121. Constraining Ion-Scale Heating and Spectral Energy Transfer in Observations of Plasma Turbulence

Author

Bowen, Trevor A., primary, Mallet, Alfred, additional, Bale, Stuart D., additional, Bonnell, J. W., additional, Case, Anthony W., additional, Chandran, Benjamin D. G., additional, Chasapis, Alexandros, additional, Chen, Christopher H. K., additional, Duan, Die, additional, Dudok de Wit, Thierry, additional, Goetz, Keith, additional, Halekas, Jasper S., additional, Harvey, Peter R., additional, Kasper, J. C., additional, Korreck, Kelly E., additional, Larson, Davin, additional, Livi, Roberto, additional, MacDowall, Robert J., additional, Malaspina, David M., additional, McManus, Michael D., additional, Pulupa, Marc, additional, Stevens, Michael, additional, and Whittlesey, Phyllis, additional

Published
2020
Full Text
View/download PDF

122. Coronal Electron Temperature Inferred from the Strahl Electrons in the Inner Heliosphere: Parker Solar Probe and Helios Observations

Author

Berčič, Laura, primary, Larson, Davin, additional, Whittlesey, Phyllis, additional, Maksimović, Milan, additional, Badman, Samuel T., additional, Landi, Simone, additional, Matteini, Lorenzo, additional, Bale, Stuart. D., additional, Bonnell, John W., additional, Case, Anthony W., additional, Dudok de Wit, Thierry, additional, Goetz, Keith, additional, Harvey, Peter R., additional, Kasper, Justin C., additional, Korreck, Kelly E., additional, Livi, Roberto, additional, MacDowall, Robert J., additional, Malaspina, David M., additional, Pulupa, Marc, additional, and Stevens, Michael L., additional

Published
2020
Full Text
View/download PDF

123. ESCAPADE: coordinated multipoint measurements of Mars' near-space plasma environment

Author

Lillis, Robert, primary, Curry, Shannon, additional, Russell, Christopher, additional, Luhmann, Janet, additional, Barjatya, Aroh, additional, Larson, Davin, additional, Modolo, Ronan, additional, Livi, Roberto, additional, Whittlesey, Phyllis, additional, Harada, Yuki, additional, Fowler, Christopher, additional, Xu, Shaosui, additional, Brain, David, additional, Withers, Paul, additional, and Thiemann, Edward, additional

Published
2020
Full Text
View/download PDF

124. Proton Temperature Anisotropy Variations in Inner Heliosphere Estimated with the First Parker Solar Probe Observations

Author

Huang, Jia, primary, Kasper, J. C., additional, Vech, D., additional, Klein, K. G., additional, Stevens, M., additional, Martinović, Mihailo M., additional, Alterman, B. L., additional, Ďurovcová, Tereza, additional, Paulson, Kristoff, additional, Maruca, Bennett A., additional, Qudsi, Ramiz A., additional, Case, A. W., additional, Korreck, K. E., additional, Jian, Lan K., additional, Velli, Marco, additional, Lavraud, B., additional, Hegedus, A., additional, Bert, C. M., additional, Holmes, J., additional, Bale, Stuart D., additional, Larson, Davin E., additional, Livi, Roberto, additional, Whittlesey, P., additional, Pulupa, Marc, additional, MacDowall, Robert J., additional, Malaspina, David M., additional, Bonnell, John W., additional, Harvey, Peter, additional, Goetz, Keith, additional, and de Wit, Thierry Dudok, additional

Published
2020
Full Text
View/download PDF

125. Cross Helicity Reversals in Magnetic Switchbacks

Author

McManus, Michael D., primary, Bowen, Trevor A., additional, Mallet, Alfred, additional, Chen, Christopher H. K., additional, Chandran, Benjamin D. G., additional, Bale, Stuart D., additional, Larson, Davin E., additional, Dudok de Wit, Thierry, additional, Kasper, J. C., additional, Stevens, Michael, additional, Whittlesey, Phyllis, additional, Livi, Roberto, additional, Korreck, Kelly E., additional, Goetz, Keith, additional, Harvey, Peter R., additional, Pulupa, Marc, additional, MacDowall, Robert J., additional, Malaspina, David M., additional, Case, Anthony W., additional, and Bonnell, J. W., additional

Published
2020
Full Text
View/download PDF

126. The Enhancement of Proton Stochastic Heating in the Near-Sun Solar Wind

Author

Martinović, Mihailo M., primary, Klein, Kristopher G., additional, Kasper, Justin C., additional, Case, Anthony W., additional, Korreck, Kelly E., additional, Larson, Davin, additional, Livi, Roberto, additional, Stevens, Michael, additional, Whittlesey, Phyllis, additional, Chandran, Benjamin D. G., additional, Alterman, Ben L., additional, Huang, Jia, additional, Chen, Christopher H. K., additional, Bale, Stuart D., additional, Pulupa, Marc, additional, Malaspina, David M., additional, Bonnell, John W., additional, Harvey, Peter R., additional, Goetz, Keith, additional, Dudok de Wit, Thierry, additional, and MacDowall, Robert J., additional

Published
2020
Full Text
View/download PDF

127. Analysis of the Internal Structure of the Streamer Blowout Observed by the Parker Solar Probe During the First Solar Encounter

Author

Nieves-Chinchilla, Teresa, primary, Szabo, Adam, additional, Korreck, Kelly E., additional, Alzate, Nathalia, additional, Balmaceda, Laura A., additional, Lavraud, Benoit, additional, Paulson, Kristoff, additional, Narock, Ayris A., additional, Wallace, Samantha, additional, Jian, Lan K., additional, Luhmann, Janet G., additional, Morgan, Huw, additional, Higginson, Aleida, additional, Arge, Charles N., additional, Bale, Stuart D., additional, Case, Anthony W., additional, Wit, Thierry Dudok de, additional, Giacalone, Joe, additional, Goetz, Keith, additional, Harvey, Peter R., additional, Jones-Melosky, Shaela I., additional, Kasper, J. C., additional, Larson, Davin E., additional, Livi, Roberto, additional, McComas, David J., additional, MacDowall, Robert J., additional, Malaspina, David M., additional, Pulupa, Marc, additional, Raouafi, Nour E., additional, Schwadron, Nathan, additional, Stevens, Michael Louis, additional, and Whittlesey, Phyllis L., additional

Published
2020
Full Text
View/download PDF

128. Exploring Solar Wind Origins and Connecting Plasma Flows from the Parker Solar Probe to 1 au: Nonspherical Source Surface and Alfvénic Fluctuations

Author

Panasenco, Olga, primary, Velli, Marco, additional, D’Amicis, Raffaella, additional, Shi, Chen, additional, Réville, Victor, additional, Bale, Stuart D., additional, Badman, Samuel T., additional, Kasper, Justin, additional, Korreck, Kelly, additional, Bonnell, J. W., additional, Wit, Thierry Dudok de, additional, Goetz, Keith, additional, Harvey, Peter R., additional, MacDowall, Robert J., additional, Malaspina, David M., additional, Pulupa, Marc, additional, Case, Anthony W., additional, Larson, Davin, additional, Livi, Roberto, additional, Stevens, Michael, additional, and Whittlesey, Phyllis, additional

Published
2020
Full Text
View/download PDF

129. The Radial Dependence of Proton-scale Magnetic Spectral Break in Slow Solar Wind during PSP Encounter 2

Author

Duan, Die, primary, Bowen, Trevor A., additional, Chen, Christopher H. K., additional, Mallet, Alfred, additional, He, Jiansen, additional, Bale, Stuart D., additional, Vech, Daniel, additional, Kasper, J. C., additional, Pulupa, Marc, additional, Bonnell, John W., additional, Case, Anthony W., additional, de Wit, Thierry Dudok, additional, Goetz, Keith, additional, Harvey, Peter R., additional, Korreck, Kelly E., additional, Larson, Davin, additional, Livi, Roberto, additional, MacDowall, Robert J., additional, Malaspina, David M., additional, Stevens, Michael, additional, and Whittlesey, Phyllis, additional

Published
2020
Full Text
View/download PDF

130. Sharp Alfvénic Impulses in the Near-Sun Solar Wind

Author

Horbury, Timothy S., primary, Woolley, Thomas, additional, Laker, Ronan, additional, Matteini, Lorenzo, additional, Eastwood, Jonathan, additional, Bale, Stuart D., additional, Velli, Marco, additional, Chandran, Benjamin D. G., additional, Phan, Tai, additional, Raouafi, Nour E., additional, Goetz, Keith, additional, Harvey, Peter R., additional, Pulupa, Marc, additional, Klein, K. G., additional, Dudok de Wit, Thierry, additional, Kasper, Justin C., additional, Korreck, Kelly E., additional, Case, A. W., additional, Stevens, Michael L., additional, Whittlesey, Phyllis, additional, Larson, Davin, additional, MacDowall, Robert J., additional, Malaspina, David M., additional, and Livi, Roberto, additional

Published
2020
Full Text
View/download PDF

131. Plasma Waves near the Electron Cyclotron Frequency in the Near-Sun Solar Wind

Author

Malaspina, David M., primary, Halekas, Jasper, additional, Berčič, Laura, additional, Larson, Davin, additional, Whittlesey, Phyllis, additional, Bale, Stuart D., additional, Bonnell, John W., additional, Dudok de Wit, Thierry, additional, Ergun, Robert E., additional, Howes, Gregory, additional, Goetz, Keith, additional, Goodrich, Katherine, additional, Harvey, Peter R., additional, MacDowall, Robert J., additional, Pulupa, Marc, additional, Case, Anthony W., additional, Kasper, Justin C., additional, Korreck, Kelly E., additional, Livi, Roberto, additional, and Stevens, Michael L., additional

Published
2020
Full Text
View/download PDF

132. Magnetic Field Kinks and Folds in the Solar Wind

Author

Tenerani, Anna, primary, Velli, Marco, additional, Matteini, Lorenzo, additional, Réville, Victor, additional, Shi, Chen, additional, Bale, Stuart D., additional, Kasper, Justin C., additional, Bonnell, John W., additional, Case, Anthony W., additional, de Wit, Thierry Dudok, additional, Goetz, Keith, additional, Harvey, Peter R., additional, Klein, Kristopher G., additional, Korreck, Kelly, additional, Larson, Davin, additional, Livi, Roberto, additional, MacDowall, Robert J., additional, Malaspina, David M., additional, Pulupa, Marc, additional, Stevens, Michael, additional, and Whittlesey, Phyllis, additional

Published
2020
Full Text
View/download PDF

133. Source and Propagation of a Streamer Blowout Coronal Mass Ejection Observed by the Parker Solar Probe

Author

Korreck, Kelly E., primary, Szabo, Adam, additional, Chinchilla, Teresa Nieves, additional, Lavraud, Benoit, additional, Luhmann, Janet, additional, Niembro, Tatiana, additional, Higginson, Aleida, additional, Alzate, Nathalia, additional, Wallace, Samantha, additional, Paulson, Kristoff, additional, Rouillard, Alexis, additional, Kouloumvakos, Athanasios, additional, Poirier, Nicolas, additional, Kasper, Justin C., additional, Case, A. W., additional, Stevens, Michael L., additional, Bale, Stuart D., additional, Pulupa, Marc, additional, Whittlesey, Phyllis, additional, Livi, Roberto, additional, Goetz, Keith, additional, Larson, Davin, additional, Malaspina, David M., additional, Morgan, Huw, additional, Narock, Ayris A., additional, Schwadron, Nathan A., additional, Bonnell, John, additional, Harvey, Peter, additional, and Wygant, John, additional

Published
2020
Full Text
View/download PDF

134. The Solar Probe Cup on the Parker Solar Probe

Author

Case, A. W., primary, Kasper, Justin C., additional, Stevens, Michael L., additional, Korreck, Kelly E., additional, Paulson, Kristoff, additional, Daigneau, Peter, additional, Caldwell, Dave, additional, Freeman, Mark, additional, Henry, Thayne, additional, Klingensmith, Brianna, additional, Bookbinder, J. A., additional, Robinson, Miles, additional, Berg, Peter, additional, Tiu, Chris, additional, Wright, K. H., additional, Reinhart, Matthew J., additional, Curtis, David, additional, Ludlam, Michael, additional, Larson, Davin, additional, Whittlesey, Phyllis, additional, Livi, Roberto, additional, Klein, Kristopher G., additional, and Martinović, Mihailo M., additional

Published
2020
Full Text
View/download PDF

135. The Solar Probe ANalyzers—Electrons on the Parker Solar Probe

Author

Whittlesey, Phyllis L., primary, Larson, Davin E., additional, Kasper, Justin C., additional, Halekas, Jasper, additional, Abatcha, Mamuda, additional, Abiad, Robert, additional, Berthomier, M., additional, Case, A. W., additional, Chen, Jianxin, additional, Curtis, David W., additional, Dalton, Gregory, additional, Klein, Kristopher G., additional, Korreck, Kelly E., additional, Livi, Roberto, additional, Ludlam, Michael, additional, Marckwordt, Mario, additional, Rahmati, Ali, additional, Robinson, Miles, additional, Slagle, Amanda, additional, Stevens, M. L., additional, Tiu, Chris, additional, and Verniero, J. L., additional

Published
2020
Full Text
View/download PDF

136. Statistics and Polarization of Type III Radio Bursts Observed in the Inner Heliosphere

Author

Pulupa, Marc, primary, Bale, Stuart D., additional, Badman, Samuel T., additional, Bonnell, J. W., additional, Case, Anthony W., additional, de Wit, Thierry Dudok, additional, Goetz, Keith, additional, Harvey, Peter R., additional, Hegedus, Alexander M., additional, Kasper, Justin C., additional, Korreck, Kelly E., additional, Krasnoselskikh, Vladimir, additional, Larson, Davin, additional, Lecacheux, Alain, additional, Livi, Roberto, additional, MacDowall, Robert J., additional, Maksimovic, Milan, additional, Malaspina, David M., additional, Martínez Oliveros, Juan Carlos, additional, Meyer-Vernet, Nicole, additional, Moncuquet, Michel, additional, Stevens, Michael, additional, and Whittlesey, Phyllis, additional

Published
2020
Full Text
View/download PDF

137. Kinetic-scale Spectral Features of Cross Helicity and Residual Energy in the Inner Heliosphere

Author

Vech, Daniel, primary, Kasper, Justin C., additional, Klein, Kristopher G., additional, Huang, Jia, additional, Stevens, Michael L., additional, Chen, Christopher H. K., additional, Case, Anthony W., additional, Korreck, Kelly, additional, Bale, Stuart D., additional, Bowen, Trevor A., additional, Whittlesey, Phyllis L., additional, Livi, Roberto, additional, Larson, Davin E., additional, Malaspina, David, additional, Pulupa, Marc, additional, Bonnell, John, additional, Harvey, Peter, additional, Goetz, Keith, additional, Dudok de Wit, Thierry, additional, and MacDowall, Robert, additional

Published
2020
Full Text
View/download PDF

138. Density Fluctuations in the Solar Wind Based on Type III Radio Bursts Observed by Parker Solar Probe

Author

Krupar, Vratislav, primary, Szabo, Adam, additional, Maksimovic, Milan, additional, Kruparova, Oksana, additional, Kontar, Eduard P., additional, Balmaceda, Laura A., additional, Bonnin, Xavier, additional, Bale, Stuart D., additional, Pulupa, Marc, additional, Malaspina, David M., additional, Bonnell, John W., additional, Harvey, Peter R., additional, Goetz, Keith, additional, Dudok de Wit, Thierry, additional, MacDowall, Robert J., additional, Kasper, Justin C., additional, Case, Anthony W., additional, Korreck, Kelly E., additional, Larson, Davin E., additional, Livi, Roberto, additional, Stevens, Michael L., additional, Whittlesey, Phyllis L., additional, and Hegedus, Alexander M., additional

Published
2020
Full Text
View/download PDF

139. The Role of Alfvén Wave Dynamics on the Large-scale Properties of the Solar Wind: Comparing an MHD Simulation with Parker Solar Probe E1 Data

Author

Réville, Victor, primary, Velli, Marco, additional, Panasenco, Olga, additional, Tenerani, Anna, additional, Shi, Chen, additional, Badman, Samuel T., additional, Bale, Stuart D., additional, Kasper, J. C., additional, Stevens, Michael L., additional, Korreck, Kelly E., additional, Bonnell, J. W., additional, Case, Anthony W., additional, de Wit, Thierry Dudok, additional, Goetz, Keith, additional, Harvey, Peter R., additional, Larson, Davin E., additional, Livi, Roberto, additional, Malaspina, David M., additional, MacDowall, Robert J., additional, Pulupa, Marc, additional, and Whittlesey, Phyllis L., additional

Published
2020
Full Text
View/download PDF

140. Magnetic Connectivity of the Ecliptic Plane within 0.5 au: Potential Field Source Surface Modeling of the First Parker Solar Probe Encounter

Author

Badman, Samuel T., primary, Bale, Stuart D., additional, Martínez Oliveros, Juan C., additional, Panasenco, Olga, additional, Velli, Marco, additional, Stansby, David, additional, Buitrago-Casas, Juan C., additional, Réville, Victor, additional, Bonnell, John W., additional, Case, Anthony W., additional, Dudok de Wit, Thierry, additional, Goetz, Keith, additional, Harvey, Peter R., additional, Kasper, Justin C., additional, Korreck, Kelly E., additional, Larson, Davin E., additional, Livi, Roberto, additional, MacDowall, Robert J., additional, Malaspina, David M., additional, Pulupa, Marc, additional, Stevens, Michael L., additional, and Whittlesey, Phyllis L., additional

Published
2020
Full Text
View/download PDF

141. Relating Streamer Flows to Density and Magnetic Structures at the Parker Solar Probe

Author

Rouillard, Alexis P., primary, Kouloumvakos, Athanasios, additional, Vourlidas, Angelos, additional, Kasper, Justin, additional, Bale, Stuart, additional, Raouafi, Nour-Edine, additional, Lavraud, Benoit, additional, Howard, Russell A., additional, Stenborg, Guillermo, additional, Stevens, Michael, additional, Poirier, Nicolas, additional, Davies, Jackie A., additional, Hess, Phillip, additional, Higginson, Aleida K., additional, Lavarra, Michael, additional, Viall, Nicholeen M., additional, Korreck, Kelly, additional, Pinto, Rui F., additional, Griton, Léa, additional, Réville, Victor, additional, Louarn, Philippe, additional, Wu, Yihong, additional, Dalmasse, Kévin, additional, Génot, Vincent, additional, Case, Anthony W., additional, Whittlesey, Phyllis, additional, Larson, Davin, additional, Halekas, Jasper S., additional, Livi, Roberto, additional, Goetz, Keith, additional, Harvey, Peter R., additional, MacDowall, Robert J., additional, Malaspina, D., additional, Pulupa, M., additional, Bonnell, J., additional, de Witt, T. Dudok, additional, and Penou, Emmanuel, additional

Published
2020
Full Text
View/download PDF

142. Global Magnetospheric Response to an Interplanetary Shock: THEMIS Observations

Author

Zhang, Hui, Sibeck, David G, Zong, Q.-G, McFadden, James P, Larson, Davin, Glassmeier, K.-H, and Angelopoulos, V

Subjects
Geophysics
Abstract

We investigate the global response of geospace plasma environment to an interplanetary shock at approx. 0224 UT on May 28, 2008 from multiple THEMIS spacecraft observations in the magnetosheath (THEMIS B and C) and the mid-afternoon (THEMIS A) and dusk magnetosphere (THEMIS D and E). The interaction of the transmitted interplanetary shock with the magnetosphere has global effects. Consequently, it can affect geospace plasma significantly. After interacting with the bow shock, the interplanetary shock transmitted a fast shock and a discontinuity which propagated through the magnetosheath toward the Earth at speeds of 300 km/s and 137 km/s respectively. THEMIS A observations indicate that the plasmaspheric plume changed significantly by the interplanetary shock impact. The plasmaspheric plume density increased rapidly from 10 to 100/ cubic cm in 4 min and the ion distribution changed from isotropic to strongly anisotropic distribution. Electromagnetic ion cyclotron (EMIC) waves observed by THEMIS A are most likely excited by the anisotropic ion distributions caused by the interplanetary shock impact. To our best knowledge, this is the first direct observation of the plasmaspheric plume response to an interplanetary shock's impact. THEMIS A, but not D or E, observed a plasmaspheric plume in the dayside magnetosphere. Multiple spacecraft observations indicate that the dawn-side edge of the plasmaspheric plume was located between THEMIS A and D (or E).

Published
2011

144. The role of Alfv��n wave dynamics on the large scale properties of the solar wind: comparing an MHD simulation with PSP E1 data

Author

R��ville, Victor, Velli, Marco, Panasenco, Olga, Tenerani, Anna, Shi, Chen, Badman, Samuel T., Bale, Stuart D., Kasper, J. C., Stevens, Michael L., Korreck, Kelly E., Bonnell, J. W., Case, Anthony W., de Wit, Thierry Dudok, Goetz, Keith, Harvey, Peter R., Larson, Davin E., Livi, Roberto, Malaspina, David M., MacDowall, Robert J., Pulupa, Marc, and Whittlesey, Phyllis L.

Subjects
Physics::Space Physics, Astrophysics::Solar and Stellar Astrophysics, FOS: Physical sciences, Astrophysics::Earth and Planetary Astrophysics, Solar and Stellar Astrophysics (astro-ph.SR), Space Physics (physics.space-ph)
Abstract

During Parker Solar Probe's first orbit, the solar wind plasma has been observed in situ closer than ever before, the perihelion on November 6th 2018 revealing a flow that is constantly permeated by large amplitude Alfv��nic fluctuations. These include radial magnetic field reversals, or switchbacks, that seem to be a persistent feature of the young solar wind. The measurements also reveal a very strong, unexpected, azimuthal velocity component. In this work, we numerically model the solar corona during this first encounter, solving the MHD equations and accounting for Alfv��n wave transport and dissipation. We find that the large scale plasma parameters are well reproduced, allowing the computation of the solar wind sources at Probe with confidence. We try to understand the dynamical nature of the solar wind to explain both the amplitude of the observed radial magnetic field and of the azimuthal velocities., Accepted Erratum includeded as an appendix. Updated references. 17 pages, 9 figures total

Published
2019
Full Text
View/download PDF

145. Nature of Fluctuations on Directional Discontinuities Inside a Solar Ejection: Wind and IMP 8 Observations

Author

Vasquez, Bernard J, Farrugia, Charles J, Markovskii, Sergei A, Hollweg, Joseph V, Richardson, Ian G, Ogilvie, Keith W, Lepping, Ronald P, Lin, Robert P, Larson, Davin, and White, Nicholas E

Subjects
Social And Information Sciences (General)
Abstract

A solar ejection passed the Wind spacecraft between December 23 and 26, 1996. On closer examination, we find a sequence of ejecta material, as identified by abnormally low proton temperatures, separated by plasmas with typical solar wind temperatures at 1 AU. Large and abrupt changes in field and plasma properties occurred near the separation boundaries of these regions. At the one boundary we examine here, a series of directional discontinuities was observed. We argue that Alfvenic fluctuations in the immediate vicinity of these discontinuities distort minimum variance normals, introducing uncertainty into the identification of the discontinuities as either rotational or tangential. Carrying out a series of tests on plasma and field data including minimum variance, velocity and magnetic field correlations, and jump conditions, we conclude that the discontinuities are tangential. Furthermore, we find waves superposed on these tangential discontinuities (TDs). The presence of discontinuities allows the existence of both surface waves and ducted body waves. Both probably form in the solar atmosphere where many transverse nonuniformities exist and where theoretically they have been expected. We add to prior speculation that waves on discontinuities may in fact be a common occurrence. In the solar wind, these waves can attain large amplitudes and low frequencies. We argue that such waves can generate dynamical changes at TDs through advection or forced reconnection. The dynamics might so extensively alter the internal structure that the discontinuity would no longer be identified as tangential. Such processes could help explain why the occurrence frequency of TDs observed throughout the solar wind falls off with increasing heliocentric distance. The presence of waves may also alter the nature of the interactions of TDs with the Earth's bow shock in so-called hot flow anomalies.

Published
2001
Full Text
View/download PDF

146. Loss of the Martian atmosphere to space: Present-day loss rates determined from MAVEN observations and integrated loss through time

Author

Jakosky , Bruce, Brain , David, Chaffin , Michael, Curry , Shannon M., Deighan , Justin, Grebowsky , Joseph, Halekas , Jasper, Leblanc , François, Lillis , Robert, Luhmann , Janet, Andersson , Laila, André , Nicolas, Andrews , David, Baird , Darren, Baker , Daniel, Bell , Jared, Benna , Mehdi, Bhattacharyya , Dolon, Bougher , Stephen, Bowers , Charlie, Chamberlin , Phillip, Chaufray , Jean-Yves, Clarke , John, Collinson , Glyn, Combi , Michael, Connerney , Jack, Connour , Kyle, Correira , J., Crabb , Kyle, Crary , Frank, Cravens , Thomas, Crismani , Matteo, Delory , Greg, Dewey , Ryan, DiBraccio , Gina, Dong , Chuanfei, Dong , Yaxue, Dunn , Patrick, Egan , Hilary, Elrod , Meredith K., England , Scott, Eparvier , Frank, Ergun , Robert, Eriksson , Anders, Esman , Teresa, Espley , Jared, Evans , S., Fallows , Kathryn, Fang , Xiaohua, Fillingim , Matthew, Flynn , C., Fogle , A., Fowler , Christopher M., Fox , Jane L., Fujimoto , Masaki, Garnier , Philippe, Girazian , Zachary, Groeller , Hannes, Gruesbeck , Jacob, Hamil , O., Hanley , K., Hara , Takuya, Harada , Yuki, Hermann , Jacob, Holmberg , Mika, Holsclaw , Greg, Houston , S., Inui , S., Jain , Sonal, Jolitz , Rebecca, Kotova , Anna, Kuroda , Takeshi, Larson , Davin, Lee , Yuni, Lee , C., Lefèvre , Franck, Lentz , Christy, Lo , D., Lugo , Rafael, Ma , Yingjuan, Mahaffy , Paul R., Marquette , Melissa, Matsumoto , Y., Mayyasi , Majd, Mazelle , Christian, Mcclintock , William, McFadden , Jim, Medvedev , A., Mendillo , Michael, Meziane , K., Milby , Zachariah, Mitchell , D., Modolo , Ronan, Montmessin , Franck, Nagy , Andrew, Nakagawa , H., Narvaez , Clara, Olsen , Kirk, Pawlowski , D., Peterson , William, Rahmati , Ali, Roeten , Kali, Romanelli , Norberto, Ruhunusiri , Suranga, Russell , Christopher T., Sakai , Shotaro, Schneider , Nicholas, Seki , K., Sharrar , R., Shaver , S., Siskind , David E., Slipski , Marek, Soobiah , Yasir, Steckiewicz , Morgane, Stevens , Michael, Stewart , Ian, Laboratory for Atmospheric and Space Physics [Boulder] ( LASP ), University of Colorado Boulder [Boulder], Space Sciences Laboratory [Berkeley] ( SSL ), University of California [Berkeley], NASA Goddard Space Flight Center ( GSFC ), Department of Physics and Astronomy [Iowa City], University of Iowa [Iowa], HEPPI - LATMOS, Laboratoire Atmosphères, Milieux, Observations Spatiales ( LATMOS ), Université de Versailles Saint-Quentin-en-Yvelines ( UVSQ ) -Université Pierre et Marie Curie - Paris 6 ( UPMC ) -Institut national des sciences de l'Univers ( INSU - CNRS ) -Centre National de la Recherche Scientifique ( CNRS ) -Université de Versailles Saint-Quentin-en-Yvelines ( UVSQ ) -Université Pierre et Marie Curie - Paris 6 ( UPMC ) -Institut national des sciences de l'Univers ( INSU - CNRS ) -Centre National de la Recherche Scientifique ( CNRS ), Institut de recherche en astrophysique et planétologie ( IRAP ), Université Paul Sabatier - Toulouse 3 ( UPS ) -Observatoire Midi-Pyrénées ( OMP ) -Centre National de la Recherche Scientifique ( CNRS ), Swedish Institute of Space Physics [Uppsala] ( IRF ), NASA Johnson Space Center ( JSC ), NASA, National Institute of Aerospace [Hampton] ( NIA ), Center for Space Physics [Boston] ( CSP ), Boston University [Boston] ( BU ), Department of Climate and Space Sciences and Engineering ( CLaSP ), University of Michigan [Ann Arbor], Department of Atmospheric, Oceanic, and Space Sciences [Ann Arbor] ( AOSS ), Communications and Power Industries ( CPI ), Department of Physics and Astronomy [Lawrence], University of Kansas [Lawrence] ( KU ), Princeton University, University of Arizona, Wright State University [Dayton], Institute of Space and Astronautical Science ( ISAS ), University of Kansas, Department of Physics and Astronomy [Ames, Iowa], Iowa State University ( ISU ), The University of Tokyo, National Institute of Information and Communications Technology ( NICT ), IMPEC - LATMOS, Analytical Mechanics Associates, Inc., University of California at Los Angeles [Los Angeles] ( UCLA ), Max-Planck-Institut für Sonnensystemforschung ( MPS ), Tohoku University [Sendai], Eastern Michigan University, Institute of Geophysics and Planetary Physics [Los Angeles] ( IGPP ), Department of Earth and Planetary Science [Tokyo], and Naval Research Laboratory ( NRL )

Subjects
Mars atmosphere, [ PHYS.PHYS.PHYS-AO-PH ] Physics [physics]/Physics [physics]/Atmospheric and Oceanic Physics [physics.ao-ph], Atmosphere, Magnetospheres, Solar wind, Mars, Mars climate
Abstract

International audience; Observations of the Mars upper atmosphere made from the Mars Atmosphere and Volatile Evolution (MAVEN) spacecraft have been used to determine the loss rates of gas from the upper atmosphere to space for a complete Mars year (16 Nov 2014 – 3 Oct 2016). Loss rates for H and O are sufficient to remove ∼2-3 kg/s to space. By itself, this loss would be significant over the history of the planet. In addition, loss rates would have been greater early in history due to the enhanced solar EUV and more-active Sun. Integrated loss, based on current processes whose escape rates in the past are adjusted according to expected solar evolution, would have been as much as 0.8 bar CO2 or 23 m global equivalent layer of H2O; these losses are likely to be lower limits due to the nature of the extrapolation of loss rates to the earliest times. Combined with the lack of surface or subsurface reservoirs for CO2 that could hold remnants of an early, thick atmosphere, these results suggest that loss of gas to space has been the dominant process responsible for changing the climate of Mars from an early, warmer environment to the cold, dry one that we see today.

Published
2018

149. Energetic Particle Showers Over Mars from Comet C/2013 A1 Siding Spring

Author

Sánchez - Cano, Beatriz, primary, Witasse, Olivier, additional, Lester, Mark, additional, Rahmati, Ali, additional, Ambrosi, Richard, additional, Lillis, Robert, additional, Leblanc, François, additional, Blelly, Pierre-Louis, additional, Costa, Marc, additional, Cowley, Stanley W. H., additional, Espley, Jared R., additional, Milan, Stephen E., additional, Plaut, Jeffrey J., additional, Lee, Christina, additional, and Larson, Davin, additional

Published
2018
Full Text
View/download PDF

Catalog

Books, media, physical & digital resources
See catalog results