Zobrazeno 1 - 10
of 32
pro vyhledávání: '"Prantika Bhowmik"'
Publikováno v:
The Astrophysical Journal, Vol 953, Iss 1, p 51 (2023)
One of the major sources of perturbation in the solar cycle amplitude is believed to be the emergence of anomalous active regions that do not obey Hale’s polarity law and Joy’s law of tilt angles. Anomalous regions containing high magnetic flux t
Externí odkaz:
https://doaj.org/article/b636e1d484f14afcbd3f54100a740425
Autor:
Prantika Bhowmik, Dibyendu Nandy
Publikováno v:
Nature Communications, Vol 9, Iss 1, Pp 1-10 (2018)
The Sun’s activity cycle impacts space-reliant technologies and the Earth’s climate, but predicting this is challenging. An ensemble forecast based on an innovative combination of two solar magnetic field evolution models indicates a weak, but no
Externí odkaz:
https://doaj.org/article/d20c080cdfa840e0b1ce231987a2512b
Autor:
Anthony Yeates, Prantika Bhowmik
Publikováno v:
The Astrophysical Journal, 2022, Vol.935(1), pp.13 [Peer Reviewed Journal]
We describe a new automated technique for active region emergence in coronal magnetic field models, based on the inversion of the electric field locally from a single line-of-sight magnetogram for each region. The technique preserves the arbitrary sh
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::05409ec6a11254997a32d3dcd6814b25
http://dro.dur.ac.uk/36337/1/36337AAM.pdf
http://dro.dur.ac.uk/36337/1/36337AAM.pdf
Autor:
Dibyendu Nandy, Yoshita Baruah, Prantika Bhowmik, Soumyaranjan Dash, Sakshi Gupta, Soumitra Hazra, B. Lekshmi, Sanchita Pal, Shaonwita Pal, Souvik Roy, Chitradeep Saha, Suvadip Sinha
Publikováno v:
Journal of Atmospheric and Solar-Terrestrial Physics. 248:106081
Publikováno v:
Solar Physics, 2022, Vol.297(3), pp.41 [Peer Reviewed Journal]
Coronal mass ejections (CMEs) – among the most energetic events originating from the Sun – can cause significant and sudden disruption to the magnetic and particulate environment of the heliosphere. Thus, in the current era of space-based technol
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a3dfd64a60a104fb5e9d4b1515608256
http://dro.dur.ac.uk/35520/1/35520.pdf
http://dro.dur.ac.uk/35520/1/35520.pdf
Autor:
Anthony R. Yeates, Prantika Bhowmik
Publikováno v:
Solar physics, 2021, Vol.296(7), pp.109 [Peer Reviewed Journal]
During Solar Minimum, the Sun is perceived to be quite inactive with barely any spots emerging on the solar surface. Consequently, we observe a drop in the number of highly energetic events such as solar flares and coronal mass ejections (CMEs), whic
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::18e3647df1e407bc6e5ad56416d8775f
Publikováno v:
Astrophysical journal, 2020, Vol.890(1), pp.37 [Peer Reviewed Journal]
On 2019 July 2 a total solar eclipse—visible across parts of the Southern Pacific Ocean, Chile, and Argentina—enabled observations of the Sun's corona. The structure and emission characteristics of the corona are determined by underlying magnetic
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a4bbb3ac70d77604b3bd2bf6fbb78b45
https://doi.org/10.3847/1538-4357/ab6a91
https://doi.org/10.3847/1538-4357/ab6a91
Autor:
Prantika Bhowmik
Publikováno v:
Astronomy & astrophysics, 2019, Vol.632, pp.A117 [Peer Reviewed Journal]
Aims.Hemispheric irregularities of solar magnetic activity is a well-observed phenomenon, the origin of which has been studied through numerical simulations and data analysis techniques. In this work we explore possible causes generating north-south
Autor:
Soumyaranjan Dash, Dibyendu Nandy, Suman Panda, Rajashik Tarafder, Anthony R. Yeates, Prantika Bhowmik
Publikováno v:
The astrophysical journal, 2018, Vol.853(1), pp.72 [Peer Reviewed Journal]
On 2017 August 21, a total solar eclipse swept across the contiguous United States, providing excellent opportunities for diagnostics of the Sun's corona. The Sun's coronal structure is notoriously difficult to observe except during solar eclipses; t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b80af9b6bebf5ac2b6617d0c03f350e3
http://dro.dur.ac.uk/23983/1/23983.pdf
http://dro.dur.ac.uk/23983/1/23983.pdf
Publikováno v:
Proceedings of the International Astronomical Union. 13:187-188
We study the properties of coronal holes during solar cycle 21-23 from the McIntosh archive. In the spatial distribution of coronal hole area we find that there is a sharp increase in coronal hole area at high latitude in agreement with expected open