Zobrazeno 1 - 10
of 199
pro vyhledávání: '"M. P. Cohen"'
Autor:
I. C. Jebaraj, O. V. Agapitov, M. Gedalin, L. Vuorinen, M. Miceli, C. M. S. Cohen, A. Voshchepynets, A. Kouloumvakos, N. Dresing, A. Marmyleva, V. Krasnoselskikh, M. Balikhin, J. G. Mitchell, A. W. Labrador, N. Wijsen, E. Palmerio, L. Colomban, J. Pomoell, E. K. J. Kilpua, M. Pulupa, F. S. Mozer, N. E. Raouafi, D. J. McComas, S. D. Bale, R. Vainio
Publikováno v:
The Astrophysical Journal Letters, Vol 976, Iss 1, p L7 (2024)
In this study, we present the first-ever direct measurements of synchrotron-emitting heliospheric traveling shocks, intercepted by the Parker Solar Probe (PSP) during its close encounters. Given that much of our understanding of powerful astrophysica
Externí odkaz:
https://doaj.org/article/44b29211b9c6440c879dff30044199f8
Autor:
Z. G. Xu, C. M. S Cohen, R. A. Leske, G. D. Muro, A. C. Cummings, D. J. McComas, N. A. Schwadron, E. R. Christian, M. E. Wiedenbeck, R. L. McNutt, D. G. Mitchell, G. M. Mason, A. Kouloumvakos, R. F. Wimmer-Schweingruber, G. C. Ho, J. Rodriguez-Pacheco
Publikováno v:
The Astrophysical Journal Letters, Vol 976, Iss 1, p L3 (2024)
In this study, we employ the combined charged particle measurements from Integrated Science Investigation of the Sun on board the Parker Solar Probe (PSP) and Energetic Particle Detector on board the Solar Orbiter (SolO) to study the composition vari
Externí odkaz:
https://doaj.org/article/cd6f6715289c48cab522824ae40b35c2
Autor:
Wenwen Wei, Christina O. Lee, N. Dresing, L. Y. Khoo, L. K. Jian, J. G. Luhmann, C. M. S. Cohen, F. Fraschetti, B. Zhuang, J. Huang, C. J. Owen, G. Nicolaou, L. Rodríguez-García, E. Palmerio, I. C. Jebaraj, B. J. Lynch, F. Carcaboso
Publikováno v:
The Astrophysical Journal Letters, Vol 973, Iss 2, p L52 (2024)
The anisotropy of energetic particles provides essential information to help resolve the underlying fundamental physics of their spatial distributions, injection, acceleration, and transport processes. In this work, we report an energetic ion enhance
Externí odkaz:
https://doaj.org/article/1835c43fea4e4bd298d2f051289c8d51
Publikováno v:
The Astrophysical Journal Letters, Vol 966, Iss 1, p L19 (2024)
Energetic neutral atoms (ENAs) are expected to be produced near the Sun during large solar energetic particle (SEP) events. However, their detection by SEP instruments near 1 au has been limited. The clearest reported measurement has been from the So
Externí odkaz:
https://doaj.org/article/b7da72b7871a4bd8a30631bbf4d44b7c
Autor:
M. E. Cuesta, A. T. Cummings, G. Livadiotis, D. J. McComas, C. M. S. Cohen, L. Y. Khoo, T. Sharma, M. M. Shen, R. Bandyopadhyay, J. S. Rankin, J. R. Szalay, H. A. Farooki, Z. Xu, G. D. Muro, M. L. Stevens, S. D. Bale
Publikováno v:
The Astrophysical Journal, Vol 973, Iss 2, p 76 (2024)
In this paper, we model the high-energy tail of observed solar energetic proton energy distributions with a kappa distribution function. We employ a technique for deriving the thermodynamic parameters of solar energetic proton populations measured by
Externí odkaz:
https://doaj.org/article/ca52d81e4fb8471aaa1d3953e45ee665
Autor:
G. Livadiotis, A. T. Cummings, M. E. Cuesta, R. Bandyopadhyay, H. A. Farooki, L. Y. Khoo, D. J. McComas, J. S. Rankin, T. Sharma, M. M. Shen, C. M. S. Cohen, G. D. Muro, Z. Xu
Publikováno v:
The Astrophysical Journal, Vol 973, Iss 1, p 6 (2024)
We develop the kappa-tail fitting technique, which analyzes observations of power-law tails of distributions and energy flux spectra, and connects them to theoretical modeling of kappa distributions, to determine the thermodynamics of the examined sp
Externí odkaz:
https://doaj.org/article/1d13d0f9147c42f98b45eec653701274
Autor:
N. A. Schwadron, Stuart D. Bale, J. Bonnell, A. Case, M. Shen, E. R. Christian, C. M. S. Cohen, A. J. Davis, M. I. Desai, K. Goetz, J. Giacalone, M. E. Hill, J. C. Kasper, K. Korreck, D. Larson, R. Livi, T. Lim, R. A. Leske, O. Malandraki, D. Malaspina, W. H. Matthaeus, D. J. McComas, R. L. McNutt Jr., R. A. Mewaldt, D. G. Mitchell, J. T. Niehof, M. Pulupa, Francesco Pecora, J. S. Rankin, C. Smith, E. C. Stone, J. R. Szalay, A. Vourlidas, M. E. Wiedenbeck, P. Whittlesey
Publikováno v:
The Astrophysical Journal, Vol 970, Iss 1, p 98 (2024)
We present an event observed by Parker Solar Probe (PSP) at ∼0.2 au on 2022 March 2 in which imaging and in situ measurements coincide. During this event, PSP passed through structures on the flank of a streamer blowout coronal mass ejection (CME)
Externí odkaz:
https://doaj.org/article/e71044fedc8a46f6a6d3b6ad25d46338
Autor:
N. V. Sarlis, G. Livadiotis, D. J. McComas, M. E. Cuesta, L. Y. Khoo, C. M. S. Cohen, D. G. Mitchell, N. A. Schwadron
Publikováno v:
The Astrophysical Journal, Vol 969, Iss 1, p 64 (2024)
We investigate the long-term persistence of solar energetic particle (SEP) time series by means of four different methods: Hurst rescaled range R / S analysis, detrended fluctuation analysis, centered moving average analysis, and the fluctuation of n
Externí odkaz:
https://doaj.org/article/c815afd040ef44d39505d3fa2d18a7bc
Autor:
J. G. Mitchell, G. A. de Nolfo, E. R. Christian, R. A. Leske, J. M. Ryan, J. T. Vievering, M. E. Hill, A. W. Labrador, M. E. Wiedenbeck, D. J. McComas, C. M. S. Cohen, R. L. McNutt Jr., R. A. Mewaldt, D. G. Mitchell, J. S. Rankin, N. A. Schwadron
Publikováno v:
The Astrophysical Journal, Vol 968, Iss 1, p 33 (2024)
High-energy neutral solar radiation in the form of γ -rays and neutrons is produced as secondary products in solar flares. The characteristics of this emission can provide key information regarding the energization of charged particles, particularly
Externí odkaz:
https://doaj.org/article/e065491ca58241a9811548fa80373ba4
Autor:
C. M. S. Cohen, R. A. Leske, E. R. Christian, A. C. Cummings, G. A. de Nolfo, M. I. Desai, J. Giacalone, M. E. Hill, A. W. Labrador, D. J. McComas, R. L. McNutt Jr., R. A. Mewaldt, D. G. Mitchell, J. G. Mitchell, G. D. Muro, J. S. Rankin, N. A. Schwadron, T. Sharma, M. M. Shen, J. R. Szalay, M. E. Wiedenbeck, Z. G. Xu, O. Romeo, A. Vourlidas, S. D. Bale, M. Pulupa, J. C. Kasper, D. E. Larson, R. Livi, P. Whittlesey
Publikováno v:
The Astrophysical Journal, Vol 966, Iss 2, p 148 (2024)
On 2022 September 5, Parker Solar Probe (Parker) observed a large solar energetic particle (SEP) event at the unprecedented distance of only 15 R _S from the Sun. The observations from the Integrated Science Investigation of the Sun (IS⊙IS) obtaine
Externí odkaz:
https://doaj.org/article/e4c61a6c74c940d89ac4f8c622cd407f