Zobrazeno 1 - 10
of 29
pro vyhledávání: '"Sharanya Sur"'
Autor:
Aritra Basu, Sharanya Sur
Publikováno v:
Galaxies, Vol 9, Iss 3, p 62 (2021)
Polarized synchrotron emission from the radio halos of diffuse intracluster medium (ICM) in galaxy clusters are yet to be observed. To investigate the expected polarization in the ICM, we use high resolution (1 kpc) magnetohydrodynamic simulations of
Externí odkaz:
https://doaj.org/article/26a3f2a2b06d4016ad1618f4bf3d4e39
Autor:
George Heald, Sui Ann Mao, Valentina Vacca, Takuya Akahori, Ancor Damas-Segovia, B. M. Gaensler, Matthias Hoeft, Ivan Agudo, Aritra Basu, Rainer Beck, Mark Birkinshaw, Annalisa Bonafede, Tyler L. Bourke, Andrea Bracco, Ettore Carretti, Luigina Feretti, J. M. Girart, Federica Govoni, James A. Green, JinLin Han, Marijke Haverkorn, Cathy Horellou, Melanie Johnston-Hollitt, Roland Kothes, Tom Landecker, Błażej Nikiel-Wroczyński, Shane P. O’Sullivan, Marco Padovani, Frédérick Poidevin, Luke Pratley, Marco Regis, Christopher John Riseley, Tim Robishaw, Lawrence Rudnick, Charlotte Sobey, Jeroen M. Stil, Xiaohui Sun, Sharanya Sur, A. Russ Taylor, Alec Thomson, Cameron L. Van Eck, Franco Vazza, Jennifer L. West, the SKA Magnetism Science Working Group
Publikováno v:
Galaxies, Vol 8, Iss 3, p 53 (2020)
The Square Kilometre Array (SKA) will answer fundamental questions about the origin, evolution, properties, and influence of magnetic fields throughout the Universe. Magnetic fields can illuminate and influence phenomena as diverse as star formation,
Externí odkaz:
https://doaj.org/article/9fbcce7800434bca9f1ed1306b7a9475
Autor:
Surajit Paul, Ruta Kale, Abhirup Datta, Aritra Basu, Sharanya Sur, Viral Parekh, Prateek Gupta, Swarna Chatterjee, Sameer Salunkhe, Asif Iqbal, Mamta Pandey-Pommier, Ramij Raja, Majidul Rahaman, Somak Raychaudhury, Biman B. Nath, Subhabrata Majumdar
Publikováno v:
J.Astrophys.Astron.
J.Astrophys.Astron., 2023, 44 (1), pp.38. ⟨10.1007/s12036-023-09914-2⟩
J.Astrophys.Astron., 2023, 44 (1), pp.38. ⟨10.1007/s12036-023-09914-2⟩
Diffuse radio emission has been detected in a considerable number of galaxy clusters and groups, revealing the presence of pervasive cosmic magnetic fields, and of relativistic particles in the large-scale structure (LSS) of the Universe. Since clust
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::7aa38d58c42eef52c22b58f6d6728d96
https://hal.science/hal-03862322
https://hal.science/hal-03862322
Publikováno v:
Monthly Notices of the Royal Astronomical Society.
Using magnetohydrodynamic simulations of fluctuation dynamos, we perform broad-bandwidth synthetic observations to investigate the properties of polarized synchrotron emission and the role that Faraday rotation plays in inferring the polarized struct
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d671a0e912e7babf796b99c1fe63ba62
https://doi.org/10.1093/mnras/staa3767
https://doi.org/10.1093/mnras/staa3767
Publikováno v:
Monthly Notices of the Royal Astronomical Society: Letters. 475:L72-L76
Observations of Faraday rotation through high-redshift galaxies have revealed that they host coherent magnetic fields that are of comparable strengths to those observed in nearby galaxies. These fields could be generated by fluctuation dynamos. We us
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a095f090392216993018b322d810b4b3
https://doi.org/10.1093/mnrasl/sly007
https://doi.org/10.1093/mnrasl/sly007
Autor:
Sharanya Sur
We explore the decay of turbulence and magnetic fields generated by fluctuation dynamo action in the context of galaxy clusters where such a decaying phase can occur in the aftermath of a major merger event. Using idealized numerical simulations that
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::62923e920bd24b69a7e011cb3a584023
http://arxiv.org/abs/1907.04488
http://arxiv.org/abs/1907.04488
Publikováno v:
The Astrophysical Journal. 901:16
Recent numerical simulations have suggested the probability of a fraction of the primordial stars being ejected from the cluster of their origin. We explore the possibility that some of these can remain on the main sequence until the present epoch. W
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::9e2c623414e2400f6bf7f69bcd157242
https://doi.org/10.3847/1538-4357/abadf8
https://doi.org/10.3847/1538-4357/abadf8
Publikováno v:
Proceedings of the International Astronomical Union. 14:266-267
In our earlier studyDutta (2016a), it has been shown that a number of primordial protostars (the ‘first stars’ in the Universe, also known as Population III or Pop III stars) are being ejected from the cluster of their origin with the velocity ex
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2b1399b202899c16182f44dbcd870017
https://doi.org/10.1017/s1743921318007317
https://doi.org/10.1017/s1743921318007317
High surface density, rapidly star-forming galaxies are observed to have $\approx 50-100\,{\rm km\,s^{-1}}$ line-of-sight velocity dispersions, which are much higher than expected from supernova driving alone, but may arise from large-scale gravitati
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8385a71452e72a9cdcc0fced60b4508e
http://arxiv.org/abs/1601.00659
http://arxiv.org/abs/1601.00659
Autor:
Subhashis Roy, T. R. Seshadri, Hum Chand, Arun V. Mangalam, Kandaswamy Subramanian, Sharanya Sur
Origin of magnetic fields, its structure and effects on dynamical processes in stars to galaxies are not well understood. Lack of a direct probe has hampered its study. The first phase of Square Kilometre Array (SKA-I), will have more than an order o
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2d0dad23f915013b92948ee975ef96fa