High resolution soft X-ray spectroscopy and the quest for the hot (5-10 MK) plasma in solar active regions
File(s)
Published version
Author(s)
Type
Journal Article
Abstract
We discuss the diagnostics available to study the 5–10 MK plasma in the solar corona, which is key to understanding the heating in the cores of solar active regions. We present several simulated spectra, and show that excellent diagnostics are available in the soft X-rays, around 100 Å, as six ionization stages of Fe can simultaneously be observed, and electron densities derived, within a narrow spectral region. As this spectral range is almost unexplored, we present an analysis of available and simulated spectra, to compare the hot emission with the cooler component. We adopt recently designed multilayers to present estimates of count rates in the hot lines, with a baseline spectrometer design. Excellent count rates are found, opening up the exciting opportunity to obtain high-resolution spectroscopy of hot plasma.
Date Issued
2021-04-12
Date Acceptance
2021-02-23
Citation
Frontiers in Astronomy and Space Sciences, 2021, 8, pp.1-19
ISSN
2296-987X
Publisher
Frontiers Media
Start Page
1
End Page
19
Journal / Book Title
Frontiers in Astronomy and Space Sciences
Volume
8
Copyright Statement
© 2021 Del Zanna, Andretta, Cargill, Corso, Daw, Golub, Klimchuk and Mason. This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.
License URL
Identifier
http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000643715300001&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=1ba7043ffcc86c417c072aa74d649202
Subjects
Science & Technology
Physical Sciences
Astronomy & Astrophysics
sun-active regions
sun-atmosphere
X-ray
spectroscopy
coronal heating
ULTRAVIOLET IMAGING SPECTROMETER
HIGH-TEMPERATURE EMISSION
NON-FLARING PLASMAS
IONIZED IRON LINES
CHROMOSPHERIC EVAPORATION
MAGNETIC RECONNECTION
SPECTRAL-LINES
FE-XXI
HEATING PROPERTIES
ATOMIC DATABASE
Publication Status
Published
Article Number
ARTN 638489
Date Publish Online
2021-04-12