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pro vyhledávání: '"John T. Stefan"'
Autor:
Viacheslav M. Sadykov, John T. Stefan, Alexander G. Kosovichev, Andrey M. Stejko, Adam F. Kowalski, Joel C. Allred, Graham S. Kerr
Publikováno v:
The Astrophysical Journal, Vol 960, Iss 1, p 80 (2023)
Solar Dynamics Observatory (SDO)/Helioseismic and Magnetic Imager (HMI) observations reveal a class of solar flares with substantial energy and momentum impacts in the photosphere, concurrent with white-light emission and helioseismic responses, know
Externí odkaz:
https://doaj.org/article/6c97d2938e2e4fe58982429810168522
Publikováno v:
The Astrophysical Journal, Vol 958, Iss 2, p 160 (2023)
The first significant sunquake event of Solar Cycle 25 was observed during the X1.5 flare of 2022 May 10, by the Helioseismic and Magnetic Imager (HMI) on board the Solar Dynamics Observatory. We perform a detailed spectro-polarimetric analysis of th
Externí odkaz:
https://doaj.org/article/398b0b3e59ed44ada12d489ed174ea92
Publikováno v:
The Astrophysical Journal, Vol 948, Iss 1, p 1 (2023)
We investigate deviations in the mean phase travel time of acoustic waves preceding the emergence of 46 large active regions observed by the Helioseismic and Magnetic Imager. In our investigation, we consider two different procedures for obtaining th
Externí odkaz:
https://doaj.org/article/f28c6811b2494217be849b271a1b14e4
We investigate deviations in the mean phase travel time of acoustic waves preceding the emergence of 46 large active regions observed by the Helioseismic and Magnetic Imager. In our investigation, we consider two different procedures for obtaining th
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b0c7157f576d43e152b4a0cdc156e05f
A time–distance helioseismic technique, similar to the one used by Ilonidis et al., is applied to two independent numerical models of subsurface sound-speed perturbations to determine the spatial resolution and accuracy of phase travel time shift m
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b6c53f6a94eafdd19cdded27a9590cf6
Sunquakes are one of the more distinct secondary phenomena related to solar flares, where energy deposition in the lower layers of the Sun's atmosphere excites acoustic waves easily visible in Helioseismic and Magnetic Imager (HMI) dopplergrams. We e
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2389da037bd2c4ae40b26626468e6a11