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pro vyhledávání: '"G. Vigeesh"'
Akademický článek
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Publikováno v:
Philos Trans A Math Phys Eng Sci
The solar surface is a continuous source of internal gravity waves (IGWs). IGWs are believed to supply the bulk of the wave energy for the lower solar atmosphere, but their existence and role for the energy balance of the upper layers is still unclea
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5dc4cba00d0a7d88149cd3a09be52ecf
http://arxiv.org/abs/2010.06926
http://arxiv.org/abs/2010.06926
Publikováno v:
Keys, P H, Steiner, O & Vigeesh, G 2021, ' On the effect of oscillatory phenomena on Stokes inversion results ', Philosophical Transactions of The Royal Society A-Mathematical Physical and Engineering Sciences, vol. 379, no. 2190, 20200182 . https://doi.org/10.1098/rsta.2020.0182
Philos Trans A Math Phys Eng Sci
Philos Trans A Math Phys Eng Sci
Stokes inversion codes are crucial in returning properties of the solar atmosphere, such as temperature and magnetic field strength. However, the success of such algorithms to return reliable values can be hindered by the presence of oscillatory phen
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2b95e070749f24e484fe3f2bad37b61f
http://arxiv.org/abs/2008.05539
http://arxiv.org/abs/2008.05539
Publikováno v:
The Astrophysical Journal
The Astrophysical Journal Letters
The Astrophysical Journal Letters
Using high-resolution spectropolarimetric data recorded with the Swedish 1 m Solar Telescope, we have identified several instances of granular lanes traveling into granules. These are believed to be the observational signature of underlying tubes of
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ab0cf8399ee4d6236f7a384cfec271a3
Publikováno v:
The Astrophysical Journal. 872:166
In this second paper of the series on internal gravity waves (IGWs), we present a study of the generation and propagation of IGWs in a model solar atmosphere with diverse magnetic conditions. A magnetic field free, and three magnetic models that star
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::0a42664d8783f41726179394fcd7bc90
https://doi.org/10.3847/1538-4357/ab020c
https://doi.org/10.3847/1538-4357/ab020c
Observations of the solar atmosphere show that internal gravity waves are generated by overshooting convection, but are suppressed at locations of magnetic flux, which is thought to be the result of mode conversion into magneto-acoustic waves. Here,
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::12947356acc3063064b8487e40fdb9e9
Publikováno v:
Astronomy & Astrophysics. 508:951-962
We investigate wave propagation and energy transport in magnetic elements, which are representatives of small scale magnetic flux concentrations in the magnetic network on the Sun. This is a continuation of earlier work by Hasan et al. (2005). The ne
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::16664a4db38a7360d25f1e01269acc26
https://doi.org/10.1051/0004-6361/200912450
https://doi.org/10.1051/0004-6361/200912450
Autor:
Lars Krieger, Oskar Steiner, Bernd Freytag, W. Schaffenberger, G. Vigeesh, Sven Wedemeyer-Böhm
Publikováno v:
Astronomische Nachrichten. 328:323-328
With numerical experiments we explore the feasibility of using high frequency waves for probing the magnetic fields in the photosphere and the chromosphere of the Sun. We track a plane-parallel, monochromatic wave that propagates through a non-statio
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::9524ca830f9708f77b009bcb624d0379
https://doi.org/10.1002/asna.200610738
https://doi.org/10.1002/asna.200610738
Publikováno v:
Proceedings of the International Astronomical Union. 4:185-187
We present 2-D numerical simulations of wave propagation in the magnetic network. The network is modelled as consisting of individual magnetic flux sheets located in intergranular lanes. They have a typical horizontal size of about 150 km at the base
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ae18a17976906b64458c4be84dda630e
https://doi.org/10.1017/s1743921309029287
https://doi.org/10.1017/s1743921309029287
Autor:
G. Vigeesh, S. S. Hasan
We present the results of three-dimensional numerical simulations to investigate the excitation of waves in the magnetic network of the Sun due to footpoint motions of a magnetic flux tube. We consider motions that typically mimic granular buffeting
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::79a8d265c51774a30a6ce21a51ca6ecb