Zobrazeno 1 - 10
of 23
pro vyhledávání: '"Alfredo Micera"'
Electrostatic Bursts Generated by the Ion–Ion Acoustic Instability with Solar Wind Plasma Parameters
Publikováno v:
The Astrophysical Journal, Vol 971, Iss 1, p 93 (2024)
This study is motivated by recent observations from the Parker Solar Probe (PSP) mission, which have been identified as ion-acoustic waves from 15 to 25 solar radii. These observations reveal characteristic sequences of narrowband, high-frequency bur
Externí odkaz:
https://doaj.org/article/91f920bf217c40b9a29fc1e6598f0c4f
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:
Daniel Verscharen, Christopher Owen, Georgios Nicolaou, Jesse Coburn, Alfredo Micera, Maria Elena Innocenti
The electrons in the solar wind exhibit non-thermal velocity distribution functions. Observed non-thermal features of the electron distribution in the inner heliosphere include the field-aligned strahl, the suprathermal halo, the sunward deficit, and
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::378237d3eaed5c3cd8c17161740d53c1
https://doi.org/10.5194/egusphere-egu23-15283
https://doi.org/10.5194/egusphere-egu23-15283
Autor:
Luca Franci, Emanuele Papini, Daniele Del Sarto, Alfredo Micera, Julia Stawarz, Tim Horbury, Giovanni Lapenta, Harry Lewis, Chadi Salem, Simone Landi, Petr Hellinger, Lorenzo Matteini, Antonio Cicone, Mirko Piersanti, Maria Elena Innocenti, Milan Maksimovic, David Burgess
We model plasma turbulence in the near-Sun solar wind by means of a high-resolution fully kinetic simulation initialised with average plasma conditions measured by Parker Solar Probe during its first solar encounter. Once turbulence is fully develope
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ab79f4f25ac97c68d1073b80b4320b6d
https://doi.org/10.5194/egusphere-egu23-15616
https://doi.org/10.5194/egusphere-egu23-15616
An ambipolar electric field is expected to develop in the solar wind, to maintain quasineutrality between the ions and electrons, which, due to their smaller mass, have a higher mobility than ions (Pierrard and Lemaire, 1996; Maksimovic et al., 2001)
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a748ea4767fa808b45ebfb47c7983410
https://doi.org/10.5194/egusphere-egu23-11785
https://doi.org/10.5194/egusphere-egu23-11785
Autor:
Marian Lazar, Stefaan Poedts, Rodrigo López, Elisabetta Boella, Andrei Zhukov, Alfredo Micera, Shaaban Mohammed Shaaban, Giovanni Lapenta
Firehose-like instabilities (FIs) are cited in multiple astrophysical applications. Of particular interest are the kinetic manifestations in weakly-collisional or even collisionless plasmas, where these instabilities are expected to contribute to the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::94eddaa6b3b4dead8a3967051368ea8a
http://arxiv.org/abs/2205.02338
http://arxiv.org/abs/2205.02338
Autor:
Luca Franci, Emanuele Papini, Alfredo Micera, Lorenzo Matteini, Julia Stawarz, Giovanni Lapenta, David Burgess, Petr Hellinger, Simone Landi, Andrea Verdini, Victor Montagud-Camps
We model the development of plasma turbulence in the near-Sun solar wind with high-resolution fully-kinetic particle-in-cell (PIC) simulations, initialised with plasma conditions measured by Parker Solar Probe during its first solar encounter (ion an
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5bb9b122fc61a50c69a0b9de88a2e3e5
https://doi.org/10.5194/egusphere-egu22-8705
https://doi.org/10.5194/egusphere-egu22-8705
Autor:
Rodrigo A. López, Alfredo Micera, Marian Lazar, Shaaban M. Shaaban, Stefaan Poedts, Giovanni Lapenta
In the absence of collision, kinetic instabilities triggered by velocity space anisotropies of plasma particles play an essential role in limiting the deviations from isotropy. For example, in the solar wind, firehose instabilities may inhibit the gr
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5ae50ff8d9aa1c685f9a7360b8ed3013
https://doi.org/10.5194/egusphere-egu22-10339
https://doi.org/10.5194/egusphere-egu22-10339
Autor:
Luca Franci, Emanuele Papini, Alfredo Micera, Giovanni Lapenta, Petr Hellinger, Daniele Del Sarto, David Burgess, Simone Landi
We perform a high-resolution two-dimensional fully-kinetic numerical simulation of a turbulent plasma system with observation-driven conditions, in order to investigate the interplay between turbulence, magnetic reconnection, and particle heating fro
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::249a156b7bde82b8f874a9412f4eb7ec
Autor:
Elisabetta Boella, Alfredo Micera, Maria Elena Innocenti, Giovanni Lapenta, Marian Lazar, Andrei Zhukov, Rodrigo A. López
Electron velocity distribution functions, initially composed of core and strahl populations as typically encountered in the near-Sun solar wind and as recently observed by Parker Solar Probe, have been modeled via fully kinetic Particle-In-Cell simul
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::bf02c868218cc2581093ffd3de20af80
https://doi.org/10.5194/egusphere-egu21-10198
https://doi.org/10.5194/egusphere-egu21-10198