Parker Solar Probe detects solar radio bursts related with a behind-the-limb active region

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985815%3A_____%2F22%3A00552674" target="_blank" >RIV/67985815:_____/22:00552674 - isvavai.cz</a>

Výsledek na webu

<a href="https://doi.org/10.1051/0004-6361/202141984" target="_blank" >https://doi.org/10.1051/0004-6361/202141984</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1051/0004-6361/202141984" target="_blank" >10.1051/0004-6361/202141984</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Parker Solar Probe detects solar radio bursts related with a behind-the-limb active region

Popis výsledku v původním jazyce

In this paper we present such observations for which the active active region 12 765, begetter of type III, J, and U solar bursts, was within sight of ground-based instruments and behind the solar limb of the PSP spacecraft. We used a subarray of the Giant Ukrainian Radio Telescope to get the spectral properties of radio bursts at the frequency range of 8-80 MHz, as well as the PSP radio instruments with a bandwidth of 10.5 kHz-19.2 MHz, during solar observations on June 5, 2020.nResults: We directly detected the radio events initiated by the active region behind the solar limb of the PSP spacecraft, using special conditions in the solar corona, due to the absence of active regions from the PSP side. Following the generation mechanism of solar radio emission, we refined the density model for the solar corona above the active region 12765 responsible for the radio bursts. Based on the PSP spacecraft position near the Sun and delays of radio waves between space- and ground-based records, we found the corresponding radio responses on the PSP spectrogram. The absence of sunspots from the PSP side contributes to the propagation of radio waves from a dense loop of the Sun to quiet regions with low densities, through which PSP instruments can detect the radiation.

Název v anglickém jazyce

Parker Solar Probe detects solar radio bursts related with a behind-the-limb active region

Popis výsledku anglicky

In this paper we present such observations for which the active active region 12 765, begetter of type III, J, and U solar bursts, was within sight of ground-based instruments and behind the solar limb of the PSP spacecraft. We used a subarray of the Giant Ukrainian Radio Telescope to get the spectral properties of radio bursts at the frequency range of 8-80 MHz, as well as the PSP radio instruments with a bandwidth of 10.5 kHz-19.2 MHz, during solar observations on June 5, 2020.nResults: We directly detected the radio events initiated by the active region behind the solar limb of the PSP spacecraft, using special conditions in the solar corona, due to the absence of active regions from the PSP side. Following the generation mechanism of solar radio emission, we refined the density model for the solar corona above the active region 12765 responsible for the radio bursts. Based on the PSP spacecraft position near the Sun and delays of radio waves between space- and ground-based records, we found the corresponding radio responses on the PSP spectrogram. The absence of sunspots from the PSP side contributes to the propagation of radio waves from a dense loop of the Sun to quiet regions with low densities, through which PSP instruments can detect the radiation.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10308 - Astronomy (including astrophysics,space science)

Projekt

<a href="/cs/project/GC20-09922J" target="_blank" >GC20-09922J: Pochopení moderních radioastronomických dat prostřednictvím pokročilých numerických simulací astrofyzikálního plazmatu</a><br>

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2022

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Astronomy & Astrophysics

ISSN

0004-6361

e-ISSN

1432-0746

Svazek periodika

567

Číslo periodika v rámci svazku

January

Stát vydavatele periodika

FR - Francouzská republika

Počet stran výsledku

10

Strana od-do

A21

Kód UT WoS článku

000733019300009

EID výsledku v databázi Scopus

2-s2.0-85122231814