Observing the Sun with the Atacama Large Millimeter/submillimeter Array (ALMA): High-Resolution Interferometric Imaging

0480924 - ASÚ 2018 RIV NL eng J - Článek v odborném periodiku
Shimojo, M. - Bastian, T.S. - Hales, A.S. - White, S. M. - Iwai, N. - Hills, R.E. - Hirota, A. - Phillips, N. - Sawada, T. - Yagoubov, P. - Siringo, G. - Asayama, S. - Sugimoto, M. - Brajša, R. - Skokić, Ivica - Bárta, Miroslav - Kim, S. - De Gregorio-Monsalvo, I. - Corder, S. - Hudson, H. S. - Wedemeyer, S. - Gary, D. E. - de Pontieu, B. - Loukitcheva, M. - Fleishman, G. - Chen, B. - Kobelski, A. - Yan, Y.
Observing the Sun with the Atacama Large Millimeter/submillimeter Array (ALMA): High-Resolution Interferometric Imaging.
Solar Physics. Roč. 292, č. 7 (2017), 87/1-87/28. ISSN 0038-0938. E-ISSN 1573-093X
Grant CEP: GA MŠMT(CZ) 7E13003; GA MŠMT(CZ) LM2015067
GRANT EU: European Commission(XE) 312495 - SOLARNET
Grant ostatní: European Commission - EC(XE) 682462
Program: H2020-EU.1.1.
Institucionální podpora: RVO:67985815
Klíčová slova: compact array * correlator * field
Obor OECD: Astronomy (including astrophysics,space science)
Impakt faktor: 2.580, rok: 2017

Observations of the Sun at millimeter and submillimeter wavelengths offer a unique probe into the structure, dynamics, and heating of the chromosphere, the structure of sunspots, the formation and eruption of prominences and filaments, and energetic phenomena such as jets and flares. High-resolution observations of the Sun at millimeter and submillimeter wavelengths are challenging due to the intense, extended, low-contrast, and dynamic nature of emission from the quiet Sun, and the extremely intense and variable nature of emissions associated with energetic phenomena. The Atacama Large Millimeter/submillimeter Array (ALMA) was designed with solar observations in mind. The requirements for solar observations are significantly different from observations of sidereal sources and special measures are necessary to successfully carry out this type of observations. We describe the commissioning efforts that enable the use of two frequency bands, the 3-mm band (Band 3) and the 1.25-mm band (Band 6), for continuum interferometric-imaging observations of the Sun with ALMA. Examples of high-resolution synthesized images obtained using the newly commissioned modes during the solar-commissioning campaign held in December 2015 are presented.
Trvalý link: http://hdl.handle.net/11104/0276576