Science development study for the Atacama Large Aperture Submillimeter Telescope (AtLAST): Solar and stellar observations

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985815%3A_____%2F24%3A00598985" target="_blank" >RIV/67985815:_____/24:00598985 - isvavai.cz</a>

Result on the web

<a href="https://hdl.handle.net/11104/0356554" target="_blank" >https://hdl.handle.net/11104/0356554</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.12688/openreseurope.17453.1" target="_blank" >10.12688/openreseurope.17453.1</a>

Result language

angličtina

Original language name

Science development study for the Atacama Large Aperture Submillimeter Telescope (AtLAST): Solar and stellar observations

Original language description

Observations at (sub-)millimeter wavelengths offer a complementary perspective on our Sun and other stars, offering significant insights into both the thermal and magnetic composition of their chromospheres. Despite the fundamental progress in (sub-)millimeter observations of the Sun, some important aspects require diagnostic capabilities that are not offered by existing observatories. In particular, simultaneously observations of the radiation continuum across an extended frequency range would facilitate the mapping of different layers and thus ultimately the 3D structure of the solar atmosphere. Mapping large regions on the Sun or even the whole solar disk at a very high temporal cadence would be crucial for systematically detecting and following the temporal evolution of flares, while synoptic observations, i.e., daily maps, over periods of years would provide an unprecedented view of the solar activity cycle in this wavelength regime. As our Sun is a fundamental reference for studying the atmospheres of active main sequence stars, observing the Sun and other stars with the same instrument would unlock the enormous diagnostic potential for understanding stellar activity and its impact on exoplanets. The Atacama Large Aperture Submillimeter Telescope (AtLAST), a single-dish telescope with 50m aperture proposed to be built in the Atacama desert in Chile, would be able to provide these observational capabilities. Equipped with a large number of detector elements for probing the radiation continuum across a wide frequency range, AtLAST would address a wide range of scientific topics including the thermal structure and heating of the solar chromosphere, flares and prominences, and the solar activity cycle. In this white paper, the key science cases and their technical requirements for AtLAST are discussed.

Czech name

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Czech description

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Type

J_ost - Miscellaneous article in a specialist periodical

CEP classification

—

OECD FORD branch

10308 - Astronomy (including astrophysics,space science)

Project

—

Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2024

Confidentiality

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

Name of the periodical

Open Research Europe

ISSN

2732-5121

e-ISSN

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Volume of the periodical

4

Issue of the periodical within the volume

2024

Country of publishing house

GB - UNITED KINGDOM

Number of pages

31

Pages from-to

140

UT code for WoS article

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EID of the result in the Scopus database

2-s2.0-85201392402