Data-driven Model of Temporal Evolution of Solar Mg ii h and k Profiles over the Solar Cycle

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985815%3A_____%2F22%3A00559603" target="_blank" >RIV/67985815:_____/22:00559603 - isvavai.cz</a>

Výsledek na webu

<a href="https://hdl.handle.net/11104/0333349" target="_blank" >https://hdl.handle.net/11104/0333349</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.3847/1538-4365/ac69cf" target="_blank" >10.3847/1538-4365/ac69cf</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Data-driven Model of Temporal Evolution of Solar Mg ii h and k Profiles over the Solar Cycle

Popis výsledku v původním jazyce

The solar radiation in the cores of the Mg ii h and k spectral lines plays a significant role in the illumination of prominences, coronal mass ejections (CMEs), spicules, flare loops, and surges. Moreover, the radiation in these lines strongly correlates with solar magnetic activity and the ultraviolet solar spectral irradiance affecting the photochemistry, especially of oxygen and nitrogen, in the middle atmosphere of the Earth. This work provides a data-driven model of temporal evolution of the solar full-disk Mg ii h and k profiles over the solar cycle. The capability of the model to reproduce the Mg ii h and k profiles for an arbitrary date is statistically assessed. Based on selected 76 IRIS near-UV full-Sun mosaics covering almost the full solar cycle 24, we find the parameters of double-Gaussian fits of the disk-averaged Mg ii h and k profiles and a model of their temporal evolution parameterized by the Bremen composite Mg ii index. The model yields intensities within the uncertainties of the observed data in more than 90% of the reconstructed profiles assuming a statistically representative set of Bremen Mg ii index values in the range of 0.150-0.165. The relevant full-disk Mg ii h and k calibrated profiles with uncertainties and spectral irradiances are provided as an online machine-readable table. The model yields Mg ii h and k profiles representing the disk incident radiation for the radiative-transfer modeling of prominences, CMEs, spicules, flare loops, and surges observed at arbitrary time.

Název v anglickém jazyce

Data-driven Model of Temporal Evolution of Solar Mg ii h and k Profiles over the Solar Cycle

Popis výsledku anglicky

The solar radiation in the cores of the Mg ii h and k spectral lines plays a significant role in the illumination of prominences, coronal mass ejections (CMEs), spicules, flare loops, and surges. Moreover, the radiation in these lines strongly correlates with solar magnetic activity and the ultraviolet solar spectral irradiance affecting the photochemistry, especially of oxygen and nitrogen, in the middle atmosphere of the Earth. This work provides a data-driven model of temporal evolution of the solar full-disk Mg ii h and k profiles over the solar cycle. The capability of the model to reproduce the Mg ii h and k profiles for an arbitrary date is statistically assessed. Based on selected 76 IRIS near-UV full-Sun mosaics covering almost the full solar cycle 24, we find the parameters of double-Gaussian fits of the disk-averaged Mg ii h and k profiles and a model of their temporal evolution parameterized by the Bremen composite Mg ii index. The model yields intensities within the uncertainties of the observed data in more than 90% of the reconstructed profiles assuming a statistically representative set of Bremen Mg ii index values in the range of 0.150-0.165. The relevant full-disk Mg ii h and k calibrated profiles with uncertainties and spectral irradiances are provided as an online machine-readable table. The model yields Mg ii h and k profiles representing the disk incident radiation for the radiative-transfer modeling of prominences, CMEs, spicules, flare loops, and surges observed at arbitrary time.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10308 - Astronomy (including astrophysics,space science)

Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

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

Astrophysical Journal. Supplement Series

ISSN

0067-0049

e-ISSN

1538-4365

Svazek periodika

261

Číslo periodika v rámci svazku

2

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

18

Strana od-do

17

Kód UT WoS článku

000827832300001

EID výsledku v databázi Scopus

2-s2.0-85135106731