The Origin of Time Delays between Sub-Terahertz and Soft X-ray Emission from Solar Flares
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985815%3A_____%2F21%3A00552406" target="_blank" >RIV/67985815:_____/21:00552406 - isvavai.cz</a>
Result on the web
<a href="https://doi.org/10.1134/S0016793221070173" target="_blank" >https://doi.org/10.1134/S0016793221070173</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1134/S0016793221070173" target="_blank" >10.1134/S0016793221070173</a>
Alternative languages
Result language
angličtina
Original language name
The Origin of Time Delays between Sub-Terahertz and Soft X-ray Emission from Solar Flares
Original language description
The time delays between sub-terahertz (sub-THz) and soft X-ray (SXR) emission from solar flares with a positive spectrum slope at frequencies of >100 GHz are considered. Based on a cross-correlation analysis of the time profiles of sub-THz and SXR emission from 11 flare events obtained from the KOSMA (230 GHz), SST (212 GHz), and RT-7.5 (93 GHz) telescopes, as well as the GOES satellite in channel 1-8 A, we identified two main types of sub-THz events. Type I includes four X-class events with a well-defined Neupert effect, i.e., the sub-THz flux outpaces the SXR flux by 2-9 min. Type II includes seven M-class flares, in which the time profiles behave similarly and the delays do not exceed 30 s. The different mechanisms of radio emission in different layers of the solar atmosphere may be responsible for the positive slope of the sub-THz spectrum of flares.
Czech name
—
Czech description
—
Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
—
OECD FORD branch
10308 - Astronomy (including astrophysics,space science)
Result continuities
Project
<a href="/en/project/GC21-16508J" target="_blank" >GC21-16508J: Sub-THz band: a new perspective for studying the origin of solar and stellar flares through observations and numerical simulations</a><br>
Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2021
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Geomagnetism and Aeronomy
ISSN
0016-7932
e-ISSN
1555-645X
Volume of the periodical
61
Issue of the periodical within the volume
7
Country of publishing house
RU - RUSSIAN FEDERATION
Number of pages
8
Pages from-to
993-1000
UT code for WoS article
000736717300013
EID of the result in the Scopus database
2-s2.0-85122083098