Výsledky vyhledávání - "Samir Dhurde"

IUCAA: genesis of a unique research centre

Autor: Saibal Ray, Utpal Mukhopadhyay, Samir Dhurde

Publikováno v: The European Physical Journal H. 48

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::2edc8201a017bc2357c400752014d23f
https://doi.org/10.1140/epjh/s13129-023-00049-0

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Sharing challenges and successes in science communication

Autor: Olayinka Fagbemiro, Amanda E. Bauer, Samir Dhurde

Publikováno v: Nature Astronomy. 2:525-527

A diverse group of science communicators from around the world came together in Fukuoka, Japan to discuss outreach strategies in a post-factual society, methods to improve inclusion, best practices for communicating within international collaboration

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::9d4ba35237243e078b4b11945c56c1f3
https://doi.org/10.1038/s41550-018-0517-x

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'Zwicky's Nonet': a compact merging ensemble of nine galaxies and 4C 35.06, a peculiar radio galaxy with dancing radio jets

Autor: P. Sunil Kumar, Joe Jacob, M. B. Pandge, Joydeep Bagchi, Sheelu Abraham, M. Pandey-Pommier, Ashish Mahabal, C. H. Ishwara-Chandra, Madhuri Gaikwad, S. G. Djorgovski, Pratik Dabhade, K. G. Biju, M. K. Patil, Samir Dhurde, M. Vivek

Publikováno v: Mon.Not.Roy.Astron.Soc.
Mon.Not.Roy.Astron.Soc., 2017, 471 (1), pp.617-628. ⟨10.1093/mnras/stx1476⟩
Monthly Notices of the Royal Astronomical Society
Monthly Notices of the Royal Astronomical Society, Oxford University Press (OUP): Policy P-Oxford Open Option A, 2017, 471 (1), pp.617-628. ⟨10.1093/mnras/stx1476⟩
Monthly Notices of the Royal Astronomical Society, 471(1), 617-628
Monthly Notices of the Royal Astronomical Society, 2017, 471 (1), pp.617-628. ⟨10.1093/mnras/stx1476⟩
Mon.Not.Roy.Astron.Soc., 2017, 471 (1), pp.617-628. 〈10.1093/mnras/stx1476〉

We report the results of our radio, optical and infra-red studies of a peculiar radio source 4C~35.06, an extended radio-loud AGN at the center of galaxy cluster Abell 407 ($z=0.047$). The central region of this cluster hosts a remarkably tight ensem

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::0f6f7c03d7dffc97035b398574cf99b9

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Kinematical diagrams for conical relativistic jets

Autor: Pronoy Sircar, Gopal-Krishna, Samir Dhurde

Publikováno v: Journal of Astrophysics and Astronomy. 28:29-40

We present diagrams depicting the expected inter-dependences of two key kinematical parameters of radio knots in the parsec-scale jets of blazars, deduced from VLBI observations. The two parameters are the apparent speed (υ app = cβ app) and the ef

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::8edc6eb956f16effc8b1a5ca93c1a2bb
https://doi.org/10.1007/s12036-007-0004-8

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Do the Mildly Superluminal VLBI Knots Exclude Ultrarelativistic Blazar Jets?

Autor: Gopal-Krishna, Samir Dhurde, Paul J. Wiita

Publikováno v: The Astrophysical Journal. 615:L81-L84

We compute the effective values of apparent transverse velocity and flux boosting factors for the VLBI radio knots of blazar jets, by integrating over the angular distributions of these quantities across the widths of jets with finite opening angles

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::dd4fb41efd8d07270a2835afd8a1a2c0
https://doi.org/10.1086/426435

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Influence of the jet opening angle on the derived kinematical parameters of blazar jets having uniform and stratified bulk motion

Autor: Paul J. Wiita, Pronoy Sircar, Samir Dhurde, Gopal-Krishna

We present analytical modelling of conical relativistic jets, in order to evaluate the role of the jet opening angle on certain key parameters that are inferred from VLBI radio observations of blazar nuclear jets. The key parameters evaluated are the

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::0fd37a7155f95e4cfa8de5381671d374
http://arxiv.org/abs/0707.4023

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Bulk Motion of Ultrarelativistic Conical Blazar Jets

Autor: Samir Dhurde, Paul J. Wiita, Gopal-Krishna

Allowing for the conical shape of ultrarelativistic blazar jets with opening angles of a few degrees on parsec-scales we show that their bulk Lorentz factors and viewing angles can be much larger than the values usually inferred by combining their fl

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d46250e89ba01c2f2c0fe7bdfcb45642
http://arxiv.org/abs/astro-ph/0603727

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Radio emission and the optical isophotal twist of radio-loud ellipticals

Autor: Paul J. Wiita, Samir Dhurde, Amit Dhakulkar, Gopal-Krishna

Using the surface photometric analysis data for a well defined sample of 79 nearby radio galaxies (z < 0.12), it is shown that the level of radio emission associated with an elliptical galaxy during the radio-loud phase is related to the presence of

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c5ba4801a160a7bebd3880c8dbeefbaf
http://arxiv.org/abs/astro-ph/0308542

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