scholarly journals An interpolation/extrapolation approach to X-ray imaging of solar flares

2012 ◽  
Vol 6 (2) ◽  
pp. 147-162
Author(s):  
Silvia Allavena ◽  
Michele Piana ◽  
Federico Benvenuto ◽  
Anna Maria Massone
Keyword(s):  
Solar Flares ◽  
X Ray ◽  
X Ray Imaging

HARD X-RAY IMAGING OF SOLAR FLARES USING INTERPOLATED VISIBILITIES

2009 ◽  
Vol 703 (2) ◽  
pp. 2004-2016 ◽  
Author(s):  
Anna Maria Massone ◽  
A. Gordon Emslie ◽  
G. J. Hurford ◽  
Marco Prato ◽  
Eduard P. Kontar ◽  
...  
Keyword(s):  
Solar Flares ◽  
X Ray ◽  
X Ray Imaging

First results of the STIX hard X-ray telescope onboard Solar Orbiter

2021 ◽  
Author(s):  
Andrea Francesco Battaglia ◽  
Jonas Saqri ◽  
Ewan Dickson ◽  
Hualin Xiao ◽  
Astrid Veronig ◽  
...  
Keyword(s):  
Solar Flares ◽  
Magnetic Energy ◽  
Imaging Spectroscopy ◽  
X Rays ◽  
X Ray ◽  
X Ray Imaging ◽  
First Results ◽  
Early Peak ◽  
Accelerated Particles ◽  
Magnetic Energy Release

<p>With the launch and commissioning of Solar Orbiter, the Spectrometer/Telescope for Imaging X-rays (STIX) is the latest hard X-ray telescope to study solar flares over a large range of flare sizes. STIX uses hard X-ray imaging spectroscopy in the range from 4 to 150 keV to diagnose the hottest temperature of solar flare plasma and the related nonthermal accelerated electrons. The unique orbit away from the Earth-Sun line in combination with the opportunity of joint observations with other Solar Orbiter instruments, STIX will provide new inputs into understanding the magnetic energy release and particle acceleration in solar flares. Commissioning observations showed that STIX is working as designed and therefore we report on the first solar microflare observations recorded on June 2020, when the spacecraft was at 0.52 AU from the Sun. STIX’s measurements are compared with Earth-orbiting observatories, such as GOES and SDO/AIA, for which we investigate and interpret the different temporal evolution. The detected early peak of the STIX profiles relative to GOES is due either by nonthermal X-ray emission of accelerated particles interacting with the dense chromosphere or the higher sensitivity of STIX toward hotter plasma.</p>

Observations from the Hinotori mission

1991 ◽  
Vol 336 (1643) ◽  
pp. 339-347 ◽  
Keyword(s):  
Solar Flares ◽  
Bragg Diffraction ◽  
High Dispersion ◽  
X Rays ◽  
Crystal Spectrometer ◽  
Quartz Crystals ◽  
X Ray ◽  
X Ray Imaging ◽  
Imaging Telescope ◽  
First Time

The satellite Hinotori was launched in 1981 by the Institute of Space and Astronautical Science of Japan. Two major experiments on board the Hinotori satellite were a hard X-ray imaging telescope with modulation collimators, and a high dispersion soft X-ray crystal spectrometer utilizing the Bragg diffraction of X-rays on quartz crystals. These two instruments have revealed for the first time that solar flares show varying characteristics depending on the environment of flaring regions, and that flares produce plasmas as hot as 3-4 x 10 7 K.

scholarly journals A statistical analysis of the soft X-ray profiles of solar flares

1989 ◽  
Vol 104 (2) ◽  
pp. 161-164
Author(s):  
G. Pearce ◽  
R.A. Harrison
Keyword(s):  
Statistical Analysis ◽  
Solar Flare ◽  
Solar Flares ◽  
Intensity Profile ◽  
Imaging Spectrometer ◽  
X Ray ◽  
X Ray Imaging ◽  
Selection Of

We undertake a statistical analysis of the soft X-ray (3.5 – 5.5 keV) profiles of solar flares as observed with the Hard X-ray Imaging Spectrometer on the SMM. The durations, maximum intensities and intensity profiles of the flares are examined. The properties of the “typical” solar flare are discussed. The distributions of the measured parameters with respect to one another reveal some interesting results. In common with past studies, we conclude that there is no evidence to suggest that more than one type of event is being viewed, despite a desire evident in the literature to place events into distinct groups. We also conclude that commonly held views about the relatonships between flare duration and intensity, profile asymmetries and intensity etc.. are in error. For more details of the flare events, the selection of data and the method of analysis, the reader is referred to Pearce and Harrison (1988).

scholarly journals Gamma-ray and hard X-ray imaging of solar flares

Solar Physics ◽  
1988 ◽  
Vol 118 (1-2) ◽  
pp. 269-290 ◽  
Author(s):  
T. A. Prince ◽  
G. J. Hurford ◽  
H. S. Hudson ◽  
C. J. Crannell
Keyword(s):  
Solar Flares ◽  
Gamma Ray ◽  
X Ray ◽  
X Ray Imaging

Hard X-Ray Imaging of Solar Flares

2022 ◽  
Author(s):  
Michele Piana ◽  
A. Gordon Emslie ◽  
Anna Maria Massone ◽  
Brian R. Dennis
Keyword(s):  
Solar Flares ◽  
X Ray ◽  
X Ray Imaging
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