Zobrazeno 1 - 10
of 16
pro vyhledávání: '"Benjamin L. Alterman"'
Autor:
Gregory G. Howes, Jaye L. Verniero, Davin E. Larson, Stuart D. Bale, Justin C. Kasper, Keith Goetz, Kristopher G. Klein, Phyllis L. Whittlesey, Roberto Livi, Ali Rahmati, Christopher H. K. Chen, Lynn B. Wilson, Benjamin L. Alterman, Robert T. Wicks
Publikováno v:
Frontiers in Astronomy and Space Sciences, Vol 9 (2022)
A leap forward in our understanding of particle energization in plasmas throughout the heliosphere is essential to answer longstanding questions in heliophysics, including the heating of the solar corona, acceleration of the solar wind, and energizat
Externí odkaz:
https://doaj.org/article/1cac316e804e4d529ffcd95c9327f67c
Autor:
Zdeněk Němeček, Jana Šafránková, František Němec, Tereza Ďurovcová, Alexander Pitňa, Benjamin L. Alterman, Yuriy M. Voitenko, Jiří Pavlů, Michael L. Stevens
Publikováno v:
Atmosphere, Vol 12, Iss 10, p 1277 (2021)
Turbulent cascade transferring the free energy contained within the large scale fluctuations of the magnetic field, velocity and density into the smaller ones is probably one of the most important mechanisms responsible for heating of the solar coron
Externí odkaz:
https://doaj.org/article/619e220e191e4885bba18f51399a53b2
Autor:
L. D. Woodham, Michael L. Stevens, Benjamin L. Alterman, John W. Bonnell, R. Laker, Katja Klein, Mihailo M. Martinović, Justin C. Kasper, T. Woolley, Stuart D. Bale, Lorenzo Matteini, Timothy S. Horbury, Anthony W. Case
Publikováno v:
Monthly Notices of the Royal Astronomical Society. 498:5524-5531
During Parker Solar Probe's first two orbits there are widespread observations of rapid magnetic field reversals known as switchbacks. These switchbacks are extensively found in the near-Sun solar wind, appear to occur in patches, and have possible l
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::06393639d82d7634d57be2b4515ef467
https://doi.org/10.1093/mnras/staa2770
https://doi.org/10.1093/mnras/staa2770
We report on the annual variation of quiet-time suprathermal ion composition and spectral properties for C-Fe using Advanced Composition Explorer (ACE)/Ultra-Low Energy Isotope Spectrometer (ULEIS) data over the energy range 0.3 MeV/nuc to 1.28 MeV/n
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0a4896b115f1d9b9d87802a7371bec22
https://doi.org/10.5194/egusphere-egu22-8953
https://doi.org/10.5194/egusphere-egu22-8953
Autor:
Benjamin L. Alterman, Christopher J. Owen, Antoinette B. Galvin, L. M. Kistler, R. M. Dewey, Stefano Livi, Jim M. Raines, Frederic Allegrini, Michael R. Collier, Susan T. Lepri
The Solar Orbiter mission was launched in 2020 into an orbit that will explore the inner heliosphere. During its orbit, periods of quasi-corotation with the Sun will enable determination of the source regions on the Sun for solar wind structures. The
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::dfede61598ea9098acfbe018caa79c43
https://doi.org/10.5194/egusphere-egu21-12435
https://doi.org/10.5194/egusphere-egu21-12435
Autor:
Thierry Dudok de Wit, Robert J. MacDowall, Keith Goetz, Benjamin L. Alterman, R. A. Qudsi, Michael L. Stevens, Stuart D. Bale, Kristoff Paulson, Benoit Lavraud, Mihailo M. Martinović, John W. Bonnell, Bennett A. Maruca, Daniel Vech, Kelly E. Korreck, Tereza Ďurovcová, Justin C. Kasper, Justin Holmes, Phyllis Whittlesey, Marc Pulupa, C. M. Bert, Anthony W. Case, Roberto Livi, Lan Jian, Marco Velli, Davin Larson, Alexander M. Hegedus, Peter Harvey, David M. Malaspina, Katja Klein, Jia Huang
Publikováno v:
Astrophysical Journal Supplement
Astrophysical Journal Supplement, American Astronomical Society, 2020, 246 (2), pp.70. ⟨10.3847/1538-4365/ab74e0⟩
Astrophysical Journal Supplement, American Astronomical Society, 2020, 246 (2), pp.70. ⟨10.3847/1538-4365/ab74e0⟩
We report proton temperature anisotropy variations in the inner heliosphere with Parker Solar Probe (PSP) observations. Using a linear fitting method, we derive proton temperature anisotropy with temperatures measured by the Solar Probe Cup (SPC) fro
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a7066f0b577344044fdbdfbff14f115f
https://hal.archives-ouvertes.fr/hal-03259393
https://hal.archives-ouvertes.fr/hal-03259393
We study the solar wind helium-to-hydrogen abundance's ($A_\mathrm{He}$) relationship to solar cycle onset. Using OMNI/Lo data, we show that $A_\mathrm{He}$ increases prior to sunspot number (SSN) minima. We also identify a rapid depletion and recove
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2069e5355a649443793adbc94c1257fc
Autor:
Robert J. MacDowall, Phyllis Whittlesey, Justin C. Kasper, Keith Goetz, Stuart D. Bale, J. L. Verniero, Peter Harvey, P. Sharma Pyakurel, Roberto Livi, Benjamin L. Alterman, Trevor A. Bowen, David M. Malaspina, Marc Pulupa, Anthony W. Case, Davin Larson, Michael L. Stevens, Ali Rahmati, John W. Bonnell, M. McManus, T. Dudok de Wit, Katja Klein, Kelly E. Korreck
Publikováno v:
Astrophysical Journal Supplement
Astrophysical Journal Supplement, American Astronomical Society, 2020, 248 (1), pp.5. ⟨10.3847/1538-4365/ab86af⟩
Astrophysical Journal Supplement, American Astronomical Society, 2020, 248 (1), pp.5. ⟨10.3847/1538-4365/ab86af⟩
Parker Solar Probe (PSP), NASA's latest and closest mission to the Sun, is on a journey to investigate fundamental enigmas of the inner heliosphere. This paper reports initial observations made by the Solar Probe Analyzer for Ions (SPAN-I), one of th
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::cd419de317017590a382986d95c48269
https://hal-insu.archives-ouvertes.fr/insu-02937494/file/2004.03009-1.pdf
https://hal-insu.archives-ouvertes.fr/insu-02937494/file/2004.03009-1.pdf
Autor:
Benjamin L. Alterman, Anthony W. Case, Phyllis Whittlesey, Katja Klein, Ali Rahmati, Emily Lichko, Davin Larson, Stuart D. Bale, Roberto Livi, Michael L. Stevens, J. L. Verniero, Mihailo M. Martinović, M. McManus, Kelly E. Korreck, Justin C. Kasper
Publikováno v:
The Astrophysical Journal. 909:7
The hot and diffuse nature of the Sun's extended atmosphere allows it to persist in non-equilibrium states for long enough that wave-particle instabilities can arise and modify the evolution of the expanding solar wind. Determining which instabilitie
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::730373125799d59960f4a11fc86e1e47
https://doi.org/10.3847/1538-4357/abd7a0
https://doi.org/10.3847/1538-4357/abd7a0
Publikováno v:
Physical Review Letters. 120
We perform a statistical assessment of solar wind stability at 1 AU against ion sources of free energy using Nyquist's instability criterion. In contrast to typically employed threshold models which consider a single free-energy source, this method i
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::3f9cf4aa416bf749ea0f1825dd6fa849
https://doi.org/10.1103/physrevlett.120.205102
https://doi.org/10.1103/physrevlett.120.205102