Zobrazeno 1 - 10
of 18
pro vyhledávání: '"Paolo C. Grigis"'
Publikováno v:
Solar Physics, 226 (1)
The radio emission during 201 X-ray selected solar flares was surveyed from 100 MHz to 4 GHz with the Phoenix-2 spectrometer of ETH Zurich. The selection includes all RHESSI flares larger than C5.0 jointly observed from launch until June 30, 2003. De
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::241b3587e85132ad601ee04a9e635352
http://doc.rero.ch/record/319789/files/11207_2005_Article_5254.pdf
http://doc.rero.ch/record/319789/files/11207_2005_Article_5254.pdf
Autor:
Paolo C. Grigis, Arnold O. Benz
Publikováno v:
The Astrophysical Journal. 683:1180-1191
RHESSI observations are used to quantitatively study the hard X-ray evolution in 5 large solar flares selected for spectral hardening in the course of the event. The X-ray bremsstrahlung emission from non-thermal electrons is characterized by two spe
Publikováno v:
Plasma Physics and Controlled Fusion. 48:B115-B121
Solar flares are generally agreed to be impulsive releases of magnetic energy. Reconnection in dilute plasma is the suggested trigger for the coronal phenomenon. It releases up to 10 26 J, accelerates up to 10 38 electrons and ions and must involve a
Autor:
Arnold O. Benz, Paolo C. Grigis
Publikováno v:
Astronomy & Astrophysics. 458:641-651
Context: Stochastic acceleration is thought to be a key mechanism in the energization of solar flare electrons. Aims: We study whether stochastic acceleration can reproduce the observed soft-hard-soft evolution of the spectral features of the hard X-
Publikováno v:
Astronomy & Astrophysics. 451:691-707
Aims. We present a summary of the analysis of thirty microflares, observed simultaneously by the Ramaty High Energy Solar Spectroscopic Imager (RHESSI) in hard X-rays and by Nobeyama RadioHeliograph (NoRH) in microwaves (17 GHz). Methods. We used mic
Publikováno v:
Astronomy & Astrophysics. 439:737-747
Non-thermal and thermal parameters of 85 solar flares of GOES class B1 to M6 (background subtracted classes A1 to M6) have been compared to each other. The hard X-ray flux has been measured by RHESSI and a spectral fitting provided flux and spectral
Publikováno v:
Advances in Space Research
Advances in Space Research, 2005, 35, pp.1778-1784. ⟨10.1016/j.asr.2005.04.052⟩
Advances in Space Research, 2005, 35, pp.1778-1784. ⟨10.1016/j.asr.2005.04.052⟩
International audience; We present an analysis of five microflares, three observed simultaneously by RHESSI in hard X-rays and Nobeyama RadioHeliograph (NoRH) in microwaves (17 GHz) and two observed by RHESSI and Nancay RadioHeliograph (NRH) at metri
Autor:
Paolo C. Grigis, Arnold O. Benz
Publikováno v:
Solar Physics. 210:431-444
Open-shutter RHESSI observations of 3-15 keV X-rays are found to exhibit active region transient brightenings and microflares at a rate of at least 10 per hour occurring even during the periods of lowest solar activity so far in the mission. A therma
Autor:
Pascal Saint-Hilaire, Henry Aurass, Marina Battaglia, Markus J. Aschwanden, Valentina Zharkova, Paolo C. Grigis, Wei Liu, Gordon D. Holman, Eduard P. Kontar
High-energy X-rays and gamma-rays from solar flares were discovered just over fifty years ago. Since that time, the standard for the interpretation of spatially integrated flare X-ray spectra at energies above several tens of keV has been the collisi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::acd7a90241afbf023b63d7030a9a1a6e
http://arxiv.org/abs/1109.6496
http://arxiv.org/abs/1109.6496
Autor:
John C. Raymond, Leon Golub, Paola Testa, David Long, Paolo C. Grigis, Suli Ma, Huadong Chen, Jun Lin
Taking advantage of both the high temporal and spatial resolution of the Atmospheric Imaging Assembly (AIA) on board the Solar Dynamics Observatory (SDO), we studied a limb coronal shock wave and its associated extreme ultraviolet (EUV) wave that occ
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::50d82f74648b430b0bb5af928d95cfed
http://arxiv.org/abs/1106.6056
http://arxiv.org/abs/1106.6056