Zobrazeno 1 - 10
of 270
pro vyhledávání: '"G. Chandran"'
Autor:
Trevor A. Bowen, Ivan Y. Vasko, Stuart D. Bale, Benjamin D. G. Chandran, Alexandros Chasapis, Thierry Dudok de Wit, Alfred Mallet, Michael McManus, Romain Meyrand, Marc Pulupa, Jonathan Squire
Publikováno v:
The Astrophysical Journal Letters, Vol 972, Iss 1, p L8 (2024)
Circularly polarized, nearly parallel propagating waves are prevalent in the solar wind at ion-kinetic scales. At these scales, the spectrum of turbulent fluctuations in the solar wind steepens, often called the transition range, before flattening at
Externí odkaz:
https://doaj.org/article/99d42b9db0dd4027a7461f97588a941d
Autor:
Sofiane Bourouaine, Jean C. Perez, Benjamin D. G. Chandran, Vamsee K. Jagarlamudi, Nour E. Raouafi, Jasper S. Halekas
Publikováno v:
The Astrophysical Journal Letters, Vol 967, Iss 2, p L19 (2024)
In this work we analyze plasma and magnetic field data provided by the Parker Solar Probe and Solar Orbiter missions to investigate the radial evolution of the heating of Alfvénic slow wind by imbalanced Alfvén-wave (AW) turbulent fluctuations from
Externí odkaz:
https://doaj.org/article/11938667d30743f8ad12b6e82266d9b9
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
Publikováno v:
ETRI Journal, Vol 42, Iss 3, Pp 351-365 (2020)
Directional sensor networks (DSNs) can significantly improve the performance of a network by employing energy efficient communication protocols. Neighbor discovery is a vital part of medium access control (MAC) and routing protocol, which influences
Externí odkaz:
https://doaj.org/article/1237c4425ea845339e6270aff9461df0
The Effects of Nonequilibrium Velocity Distributions on Alfvén Ion-cyclotron Waves in the Solar Wind
Autor:
Jada Walters, Kristopher G. Klein, Emily Lichko, Michael L. Stevens, Daniel Verscharen, Benjamin D. G. Chandran
Publikováno v:
The Astrophysical Journal, Vol 955, Iss 2, p 97 (2023)
In this work, we investigate how the complex structure found in solar wind proton velocity distribution functions (VDFs), rather than the commonly assumed two-component bi-Maxwellian structure, affects the onset and evolution of parallel-propagating
Externí odkaz:
https://doaj.org/article/cf1af76b0db5448ba66393b2f78e0b74
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
