Zobrazeno 1 - 10
of 83
pro vyhledávání: '"Georgios Nicolaou"'
Autor:
Arnaud Zaslavsky, Justin C. Kasper, Eduard P. Kontar, Davin E. Larson, Milan Maksimovic, José M. D. C. Marques, Georgios Nicolaou, Christopher J. Owen, Orlando Romeo, Phyllis L. Whittlesey
Publikováno v:
The Astrophysical Journal, Vol 966, Iss 1, p 60 (2024)
This study explores the impact of a turbulent scattering mechanism, akin to those influencing solar and galactic cosmic rays propagating in the interplanetary medium, on the population of suprathermal electrons in the solar wind. We employ a Fokker
Externí odkaz:
https://doaj.org/article/866f36993b2a48078187fcfc61312352
Autor:
Jesse T. Coburn, Daniel Verscharen, Christopher J. Owen, Milan Maksimovic, Timothy S. Horbury, Christopher H. K. Chen, Fan Guo, Xiangrong Fu, Jingting Liu, Joel B. Abraham, Georgios Nicolaou, Maria Elena Innocenti, Alfredo Micera, Vamsee Krishna Jagarlamudi
Publikováno v:
The Astrophysical Journal, Vol 964, Iss 1, p 100 (2024)
The solar wind electrons carry a significant heat flux into the heliosphere. The weakly collisional state of the solar wind implicates collisionless processes as the primary factor that constrains nonthermal features of the velocity distribution func
Externí odkaz:
https://doaj.org/article/4dc29d387ffb4c5bbc95f3794c5fd5a9
Autor:
Domenico Trotta, Andrea Larosa, Georgios Nicolaou, Timothy S. Horbury, Lorenzo Matteini, Heli Hietala, Xochitl Blanco-Cano, Luca Franci, C. H. K Chen, Lingling Zhao, Gary P. Zank, Christina M. S. Cohen, Stuart D. Bale, Ronan Laker, Nais Fargette, Francesco Valentini, Yuri Khotyaintsev, Rungployphan Kieokaew, Nour Raouafi, Emma Davies, Rami Vainio, Nina Dresing, Emilia Kilpua, Tomas Karlsson, Christopher J. Owen, Robert F. Wimmer-Schweingruber
Publikováno v:
The Astrophysical Journal, Vol 962, Iss 2, p 147 (2024)
The Parker Solar Probe (PSP) and Solar Orbiter (SolO) missions opened a new observational window in the inner heliosphere, which is finally accessible to direct measurements. On 2022 September 5, a coronal mass ejection (CME)-driven interplanetary (I
Externí odkaz:
https://doaj.org/article/d823dc64e5ad45a598ee9e3f774af124
Autor:
Die Duan, Jiansen He, Xingyu Zhu, Rui Zhuo, Ziqi Wu, Georgios Nicolaou, Jia Huang, Daniel Verscharen, Liu Yang, Christopher J. Owen, Andrey Fedorov, Philippe Louarn, Timothy S. Horbury
Publikováno v:
The Astrophysical Journal Letters, Vol 952, Iss 1, p L11 (2023)
The acceleration and heating of solar wind particles by magnetic reconnection are important mechanisms in space physics. Although alpha particles ( ^4 He ^2+ ) are the second most abundant population of solar wind ions, their kinetic behavior in sola
Externí odkaz:
https://doaj.org/article/66b43712c64a4444ae35a69fee69f5da
Publikováno v:
Frontiers in Astronomy and Space Sciences, Vol 9 (2022)
Electrostatic analyzers resolve the energy-per-charge distributions of charged plasma particles. Some space plasma instruments use electrostatic analyzers among other units, such as aperture deflectors and position sensitive detectors, in order to re
Externí odkaz:
https://doaj.org/article/71dd7cca5e864af6a1e9c22459734f26
Autor:
Camille Y. Lorfing, Hamish A. S. Reid, Raúl Gómez-Herrero, Milan Maksimovic, Georgios Nicolaou, Christopher J. Owen, Javier Rodriguez-Pacheco, Daniel F. Ryan, Domenico Trotta, Daniel Verscharen
Publikováno v:
The Astrophysical Journal, Vol 959, Iss 2, p 128 (2023)
Solar Orbiter's four in situ instruments have recorded numerous energetic electron events at heliocentric distances between 0.5 and 1 au. We analyze energetic electron fluxes, spectra, pitch-angle distributions, associated Langmuir waves, and type II
Externí odkaz:
https://doaj.org/article/44d89af150bf42fea3bf718ea02f63a0
Autor:
Omkar Dhamane, Vinit Pawaskar, Anil Raghav, Zubair Shaikh, Raffaella D’Amicis, Kalpesh Ghag, Kishor Kumbhar, Daniele Telloni, Georgios Nicolaou, Prathmesh Tari, Robert Wicks, Utsav Panchal, Bhagyashri Sathe, Prachi Pathare
Publikováno v:
The Astrophysical Journal, Vol 957, Iss 1, p 38 (2023)
Waves in plasma play an essential role in the energy transfer and plasma-heating processes. This article discusses the in situ observation of Alfvén ion cyclotron (AIC) waves and their characteristics within interplanetary coronal mass ejection (ICM
Externí odkaz:
https://doaj.org/article/2c36d8a9d1ec47eab2c4354e2166d0b3
Autor:
Ziqi Wu, Jiansen He, Die Duan, Xingyu Zhu, Chuanpeng Hou, Daniel Verscharen, Georgios Nicolaou, Christopher J. Owen, Andrey Fedorov, Philippe Louarn
Publikováno v:
The Astrophysical Journal, Vol 951, Iss 2, p 98 (2023)
Plasma energization and thermalization in magnetic reconnection is an important topic in astrophysical studies. We select two magnetic reconnection exhausts encountered by Solar Orbiter and analyze the associated ion heating in the kinetic regime. Bo
Externí odkaz:
https://doaj.org/article/fd20169a48ec45dfa8e92a84538e02b6
Publikováno v:
The Astrophysical Journal, Vol 948, Iss 1, p 22 (2023)
We analyze proton bulk parameters derived from Ulysses observations and investigate the polytropic behavior of solar wind protons over a wide range of heliocentric distances and latitudes. The large-scale variations of the proton density and temperat
Externí odkaz:
https://doaj.org/article/d8981f16628f4378ad93ca3dd27345b1
Autor:
Christopher J. Owen, Joel Baby Abraham, Georgios Nicolaou, Daniel Verscharen, Philippe Louarn, Timothy S. Horbury
Publikováno v:
Universe, Vol 8, Iss 10, p 509 (2022)
The Solar Wind Analyser (SWA) suite on Solar Orbiter includes an Electron Analyser System (SWA-EAS) which is capable of high temporal and angular resolution measurements of solar wind electrons in the energy range ∼1 eV to ∼5 keV. In this article
Externí odkaz:
https://doaj.org/article/f50f9dd829ac486b9c50bc2fbd0a310d