Zobrazeno 1 - 10
of 50
pro vyhledávání: '"Alterman, B. L."'
Autor:
Rivera, Yeimy J., Badman, Samuel T., Stevens, Michael L., Raines, Jim M., Owen, Christopher J., Paulson, Kristoff, Niembro, Tatiana, Livi, Stefano A., Lepri, Susan T., Landi, Enrico, Halekas, Jasper S., Ervin, Tamar, Dewey, Ryan M., Coburn, Jesse T., Bale, Stuart D., Alterman, B. L.
Since Parker Solar Probe's (Parker's) first perihelion pass at the Sun, large amplitude Alfv\'en waves grouped in patches have been observed near the Sun throughout the mission. Several formation processes for these magnetic switchback patches have b
Externí odkaz:
http://arxiv.org/abs/2409.03645
We report on the annual variation of quiet-time suprathermal ion composition for C through 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/nuc from 1998 thr
Externí odkaz:
http://arxiv.org/abs/2305.05441
Autor:
Verniero, J. L., Chandran, B. D. G., Larson, D. E., Paulson, K., Alterman, B. L., Badman, S., Bale, S. D., Bonnell, J. W., Bowen, T. A., de Wit, T. Dudok, Kasper, J. C., Klein, K. G., Lichko, E., Livi, R., McManus, M. D., Rahmati, A., Verscharen, D., Walters, J., Whittlesey, P. L.
The SWEAP instrument suite on Parker Solar Probe (PSP) has detected numerous proton beams associated with coherent, circularly polarized, ion-scale waves observed by PSP's FIELDS instrument suite. Measurements during PSP Encounters 4-8 revealed prono
Externí odkaz:
http://arxiv.org/abs/2110.08912
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:
http://arxiv.org/abs/2006.04669
Autor:
Huang, Jia, Kasper, J. C., Stevens, M., Vech, D., Klein, K. G., Martinović, Mihailo M., Alterman, B. L., Jian, Lan K., Hu, Qiang, Velli, Marco, Horbury, Timothy S., Lavraud, B., Parashar, T. N., Ďurovcová, Tereza, Niembro, Tatiana, Paulson, Kristoff, Hegedus, A., Bert, C. M., Holmes, J., Case, A. W., Korreck, K. E., Bale, Stuart D., Larson, Davin E., Livi, Roberto, Whittlesey, P., Pulupa, Marc, de Wit, Thierry Dudok, Malaspina, David M., MacDowall, Robert J., Bonnell, John W., Harvey, Peter R., Goetz, Keith
The slow solar wind is typically characterized as having low Alfv\'enicity. However, Parker Solar Probe (PSP) observed predominately Alfv\'enic slow solar wind during several of its initial encounters. From its first encounter observations, about 55.
Externí odkaz:
http://arxiv.org/abs/2005.12372
Autor:
Pillet, V. Martinez, Tritschler, A., Harra, L., Andretta, V., Vourlidas, A., Raouafi, N., Alterman, B. L., Rubio, L. Bellot, Cauzzi, G., Cranmer, S. R., Gibson, S., Habbal, S., Ko, Y. K., Lepri, S. T., Linker, J., Malaspina, D. M., Matthews, S., Parenti, S., Petrie, G., Spadaro, D., Ugarte-Urra, I., Warren, H., Winslow, R.
The National Science Foundation (NSF) Daniel K. Inouye Solar Telescope (DKIST) is about to start operations at the summit of Haleakala (Hawaii). DKIST will join the early science phases of the NASA and ESA Parker Solar Probe and Solar Orbiter encount
Externí odkaz:
http://arxiv.org/abs/2004.08632
Autor:
Verniero, J. L., Larson, D. E., Livi, R., Rahmati, A., McManus, M. D., Pyakurel, P. Sharma, Klein, K. G., Bowen, T. A., Bonnell, J. W., Alterman, B. L., Whittlesey, P. L., Malaspina, David M., Bale, S. D., Kasper, J. C., Case, A. W., Goetz, K., Harvey, P. R., Korreck, K. E., MacDowall, R. J., Pulupa, M., Stevens, M. L., de Wit, T. Dudok
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:
http://arxiv.org/abs/2004.03009
Autor:
Alterman, B. L., Kasper, Justin C.
Publikováno v:
Astrophys. J. 879, L6 (2019)
We study the relationship between solar wind helium to hydrogen abundance ratio ($A_\mathrm{He}$), solar wind speed ($v_\mathrm{SW}$), and sunspot number (SSN) over solar cycles 23 and 24. This is the first full 22-year Hale cycle measured with the W
Externí odkaz:
http://arxiv.org/abs/1906.12273
Publikováno v:
The Astrophysical Journal, 864(2), 112
In fast wind or when the local Coulomb collision frequency is low, observations show that solar wind minor ions and ion sub-populations flow with different bulk velocities. Measurements indicate that the drift speed of both alpha particles and proton
Externí odkaz:
http://arxiv.org/abs/1809.01693
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