Zobrazeno 1 - 10
of 176
pro vyhledávání: '"Marian Lazar"'
Autor:
Peter H. Yoon, Rodrigo A. López, Jungjoon Seough, Muhammad Rashid, Chadi S. Salem, Muhammad Sarfraz, Marian Lazar, Shaaban M. Shaaban
Publikováno v:
The Astrophysical Journal, Vol 976, Iss 2, p 173 (2024)
The proton-cyclotron (PC) instability operates in various space plasma environments. In the literature, the so-called velocity moment-based quasi-linear theory is employed to investigate the physical process of PC instability that takes place after t
Externí odkaz:
https://doaj.org/article/982ee05e4ccc421fa36dc8d42f56cd95
Publikováno v:
The Astrophysical Journal, Vol 975, Iss 1, p 112 (2024)
One of the fundamental problems in space physics is the expansion dynamics of the solar wind, strongly correlated with collective plasma reactions, such as wave instabilities that tend to relax kinetic anisotropies. The expansion is in general descri
Externí odkaz:
https://doaj.org/article/b8c583eaa7a5454aa98d07f6e8362aa3
Autor:
Peter H. Yoon, Chadi S. Salem, Kristopher G. Klein, Mihailo M. Martinović, Rodrigo A. López, Jungjoon Seough, Muhammad Sarfraz, Marian Lazar, Shaaban M. Shaaban
Publikováno v:
The Astrophysical Journal, Vol 975, Iss 1, p 105 (2024)
Typical solar wind electrons are modeled as being composed of a dense but less energetic thermal “core” population plus a tenuous but energetic “halo” population with varying degrees of temperature anisotropies for both species. In this paper
Externí odkaz:
https://doaj.org/article/e657141f6dfd44d79888011361c13437
Publikováno v:
Universe, Vol 9, Iss 10, p 448 (2023)
Multi-scale modeling of expanding plasmas is crucial for understanding the dynamics and evolution of various astrophysical plasma systems such as the solar and stellar winds. In this context, the Expanding Box Model (EBM) provides a valuable framewor
Externí odkaz:
https://doaj.org/article/091a01ab3fae4ea9af51c95d1c998611
Publikováno v:
Physics, Vol 3, Iss 4, Pp 1175-1189 (2021)
The ability of space plasmas to self-regulate through mechanisms involving self-generated fluctuations is a topic of high interest. This paper presents the results of a new advanced quasilinear (QL) approach for the instability of electromagnetic ion
Externí odkaz:
https://doaj.org/article/c5b320177e454f8eac739898fde009de
Publikováno v:
Frontiers in Astronomy and Space Sciences, Vol 9 (2022)
The electron velocity distributions measured in-situ in space plasmas reveal two central populations, a low-energy and highly dense (quasi-)thermal core, and a more diffuse but hotter suprathermal halo. Even if the core contributes much more to the t
Externí odkaz:
https://doaj.org/article/d9bf7e8a07394a008792fde14b4550a9
Autor:
Marian Lazar, R.A. López, Shaaban Mohammed Shaaban, Stefaan Poedts, Peter Haesung Yoon, Horst Fichtner
Publikováno v:
Frontiers in Astronomy and Space Sciences, Vol 8 (2022)
This review paper compiles recent results obtained by the present group of authors describing the effects of suprathermal populations present in space plasmas (up to a few keVs) on temperature anisotropy instabilities. Of particular interest are the
Externí odkaz:
https://doaj.org/article/7f5d8a364f9a46d4a236d02bc7bc48f2
Publikováno v:
The Astrophysical Journal, Vol 954, Iss 2, p 184 (2023)
Temperature anisotropy and field-aligned skewness are commonly observed nonthermal features in electron velocity distributions in the solar wind. These characteristics can act as a source of free energy to destabilize different electromagnetic wave m
Externí odkaz:
https://doaj.org/article/cdde0fb1fbe24d52b8ffc6093e5b96b1
Electrostatic wave instabilities induced by energetic electron beams are believed to be at the origin of radio emissions reported by the observations of interplanetary shocks and solar coronal sources. We revisit the electron beam-plasma configuratio
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::234edcdac995e957d95e98d51c67024c
https://doi.org/10.5194/egusphere-egu23-5303
https://doi.org/10.5194/egusphere-egu23-5303
Autor:
MARIAN LAZAR, E.P.L. ELIAS
Publikováno v:
Coastal Sediments 2023.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d87338783dc37975bfe6b8636a39873d
https://doi.org/10.1142/9789811275135_0194
https://doi.org/10.1142/9789811275135_0194