Zobrazeno 1 - 10
of 17
pro vyhledávání: '"B. D. G. Chandran"'
Autor:
Zesen Huang, Nikos Sioulas, Chen Shi, Marco Velli, Trevor Bowen, Nooshin Davis, B. D. G. Chandran, Lorenzo Matteini, Ning Kang, Xiaofei Shi, Jia Huang, Stuart D. Bale, J. C. Kasper, Davin E. Larson, Roberto Livi, P. L. Whittlesey, Ali Rahmati, Kristoff Paulson, M. Stevens, A. W. Case, Thierry Dudok de Wit, David M. Malaspina, J. W. Bonnell, Keith Goetz, Peter R. Harvey, Robert J. MacDowall
Publikováno v:
The Astrophysical Journal Letters, Vol 950, Iss 1, p L8 (2023)
The trace magnetic power spectrum in the solar wind is known to be characterized by a double power law at scales much larger than the proton gyro-radius, with flatter spectral exponents close to −1 found at the lower frequencies below an inertial r
Externí odkaz:
https://doaj.org/article/33c34356d4694432afa015931f33dbf6
Autor:
Daniel Verscharen, B. D. G. Chandran, E. Boella, J. Halekas, M. E. Innocenti, V. K. Jagarlamudi, A. Micera, V. Pierrard, Š. Štverák, I. Y. Vasko, M. Velli, P. L. Whittlesey
Publikováno v:
Frontiers in Astronomy and Space Sciences, Vol 9 (2022)
The electrons are an essential particle species in the solar wind. They often exhibit non-equilibrium features in their velocity distribution function. These include temperature anisotropies, tails (kurtosis), and reflectional asymmetries (skewness),
Externí odkaz:
https://doaj.org/article/67e5f15b2d1f4515923a19390328ae73
Autor:
J. S. Halekas, S. D. Bale, M. Berthomier, B. D. G. Chandran, J. F. Drake, J. C. Kasper, K. G. Klein, D. E. Larson, R. Livi, M. P. Pulupa, M. L. Stevens, J. L. Verniero, P. Whittlesey
Publikováno v:
The Astrophysical Journal, Vol 952, Iss 1, p 26 (2023)
A variety of energy sources, ranging from dynamic processes, such as magnetic reconnection and waves, to quasi-steady terms, such as plasma pressure, may contribute to the acceleration of the solar wind. We utilize a combination of charged particle a
Externí odkaz:
https://doaj.org/article/dca7f8a4146844848e406a7e2b522e21
Autor:
Nikos Sioulas, Marco Velli, Zesen Huang, Chen Shi, Trevor A. Bowen, B. D. G. Chandran, Ioannis Liodis, Nooshin Davis, Stuart D. Bale, T. S. Horbury, Thierry Dudok de Wit, Davin Larson, Michael L. Stevens, Justin Kasper, Christopher J. Owen, Anthony Case, Marc Pulupa, David M. Malaspina, Roberto Livi, Keith Goetz, Peter R. Harvey, Robert J. MacDowall, John W. Bonnell
Publikováno v:
The Astrophysical Journal, Vol 951, Iss 2, p 141 (2023)
We analyze a merged Parker Solar Probe (PSP) and Solar Orbiter (SO) data set covering heliocentric distances 13 R _⊙ ≲ R ≲ 220 R _⊙ to investigate the radial evolution of power and spectral index anisotropy in the wavevector space of solar wi
Externí odkaz:
https://doaj.org/article/8113060c6afd47a3ad4771b5b3e681bf
Autor:
Nooshin Davis, B. D. G. Chandran, T. A. Bowen, S. T. Badman, T. Dudok de Wit, C. H. K. Chen, S. D. Bale, Zesen Huang, Nikos Sioulas, Marco Velli
Publikováno v:
The Astrophysical Journal, Vol 950, Iss 2, p 154 (2023)
The power spectrum of magnetic field fluctuations in the fast solar wind ( V _SW > 500 km s ^−1 ) at magnetohydrodynamic scales is characterized by two different power laws on either side of a break frequency f _b . The low-frequency range at frequ
Externí odkaz:
https://doaj.org/article/e44033fcd63c44ecadd8f54e97b407d8
Autor:
N. E. Raouafi, L. Matteini, J. Squire, S. T. Badman, M. Velli, K. G. Klein, C. H. K. Chen, W. H. Matthaeus, A. Szabo, M. Linton, R. C. Allen, J. R. Szalay, R. Bruno, R. B. Decker, M. Akhavan-Tafti, O. V. Agapitov, S. D. Bale, R. Bandyopadhyay, K. Battams, L. Berčič, S. Bourouaine, T. A. Bowen, C. Cattell, B. D. G. Chandran, R. Chhiber, C. M. S. Cohen, R. D’Amicis, J. Giacalone, P. Hess, R. A. Howard, T. S. Horbury, V. K. Jagarlamudi, C. J. Joyce, J. C. Kasper, J. Kinnison, R. Laker, P. Liewer, D. M. Malaspina, I. Mann, D. J. McComas, T. Niembro-Hernandez, T. Nieves-Chinchilla, O. Panasenco, P. Pokorný, A. Pusack, M. Pulupa, J. C. Perez, P. Riley, A. P. Rouillard, C. Shi, G. Stenborg, A. Tenerani, J. L. Verniero, N. Viall, A. Vourlidas, B. E. Wood, L. D. Woodham, T. Woolley
Launched on 12 Aug. 2018, NASA's Parker Solar Probe had completed 13 of its scheduled 24 orbits around the Sun by Nov. 2022. The mission's primary science goal is to determine the structure and dynamics of the Sun's coronal magnetic field, understand
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::564aec0a61159d55b3ccc75c260fcd40
http://arxiv.org/abs/2301.02727
http://arxiv.org/abs/2301.02727
Autor:
L. D. Woodham, B. D. G. Chandran, J. C. Kasper, S. I. Jones-Mecholsky, Stuart D. Bale, Katja Klein, Trevor A. Bowen, Christopher H. K. Chen, Michel Moncuquet, Sofiane Bourouaine, Jean C. Perez
Publikováno v:
Astronomy and Astrophysics-A&A
Astronomy and Astrophysics-A&A, EDP Sciences, 2021, 650, pp.L3. ⟨10.1051/0004-6361/202039872⟩
Astronomy and Astrophysics-A&A, EDP Sciences, 2021, 650, pp.L3. ⟨10.1051/0004-6361/202039872⟩
The fourth orbit of Parker Solar Probe (PSP) reached heliocentric distances down to 27.9R⊙, allowing solar wind turbulence and acceleration mechanisms to be studied in situ closer to the Sun than previously possible. The turbulence properties were
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::24acb8668730d0d015aa8a6428862bae
http://arxiv.org/abs/2101.00246
http://arxiv.org/abs/2101.00246
Autor:
B. van der Holst, J. Huang, N. Sachdeva, J. C. Kasper, W. B. Manchester IV, D. Borovikov, B. D. G. Chandran, A. W. Case, K. E. Korreck, D. Larson, R. Livi, M. Stevens, P. Whittlesey, S. D. Bale, M. Pulupa, D. M. Malaspina, J. W. Bonnell, P. R. Harvey, K. Goetz, R. J. MacDowall
Publikováno v:
The Astrophysical Journal. 925:146
In van der Holst et al. (2019), we modeled the solar corona and inner heliosphere of the first encounter of NASA’s Parker Solar Probe (PSP) using the Alfvén Wave Solar atmosphere Model (AWSoM) with Air Force Data Assimilative Photospheric flux Tra
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d8f320d931fc5a9a0403975a5a44e75d
https://doi.org/10.3847/1538-4357/ac3d34
https://doi.org/10.3847/1538-4357/ac3d34
Autor:
J. L. Verniero, B. D. G. Chandran, D. E. Larson, K. Paulson, B. L. Alterman, S. Badman, S. D. Bale, J. W. Bonnell, T. A. Bowen, T. Dudok de Wit, J. C. Kasper, K. G. Klein, E. Lichko, R. Livi, M. D. McManus, A. Rahmati, D. Verscharen, J. Walters, P. L. Whittlesey
Publikováno v:
The Astrophysical Journal. 924:112
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 p
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e05820bc29389efe65d74626cbff3102
https://doi.org/10.3847/1538-4357/ac36d5
https://doi.org/10.3847/1538-4357/ac36d5
Autor:
S. D. Bale, T. S. Horbury, M. Velli, M. I. Desai, J. S. Halekas, M. D. McManus, O. Panasenco, S. T. Badman, T. A. Bowen, B. D. G. Chandran, J. F. Drake, J. C. Kasper, R. Laker, A. Mallet, L. Matteini, T. D. Phan, N. E. Raouafi, J. Squire, L. D. Woodham, T. Woolley
Publikováno v:
The Astrophysical Journal. 923:174
One of the striking observations from the Parker Solar Probe (PSP) spacecraft is the prevalence in the inner heliosphere of large amplitude, Alfv\'enic magnetic field reversals termed 'switchbacks'. These $\delta B_R/B \sim \mathcal{O}(1$) fluctuatio
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5a20d1f974a8690fba8c51b36afd1e9a
https://doi.org/10.3847/1538-4357/ac2d8c
https://doi.org/10.3847/1538-4357/ac2d8c