Zobrazeno 1 - 10
of 200
pro vyhledávání: '"Bagchi, J."'
Autor:
Mernier, F., Werner, N., Bagchi, J., Gendron-Marsolais, M. -L., Gopal-Krishna, Guainazzi, M., Richard-Laferrière, A., Shimwell, T. W., Simionescu, A.
Observed in a significant fraction of clusters and groups of galaxies, diffuse radio synchrotron emission reveals the presence of relativistic electrons and magnetic fields permeating large-scale systems of galaxies. Although these non-thermal electr
Externí odkaz:
http://arxiv.org/abs/2207.10092
Autor:
Nesvadba, N. P. H., Wagner, A. Y., Mukherjee, D., Mandal, A., Janssen, R. M. J., Zovaro, H., Neumayer, N., Bagchi, J., Bicknell, G.
Publikováno v:
A&A 654, A8 (2021)
It has long been suspected that powerful radio sources may lower the efficiency with which stars form from the molecular gas in their host galaxy, but so far, alternative mechanisms, in particular related to the stellar mass distribution in the massi
Externí odkaz:
http://arxiv.org/abs/2103.12816
Autor:
Monteiro-Oliveira, R., Soja, A. C., Ribeiro, A. L. B., Bagchi, J., Sankhyayan, S., Candido, T. O., Flores, R. R.
In this work, we investigate the dynamical state of the galaxy cluster Abell 2631, a massive structure located at the core of the Saraswati supercluster. To do this, we first solve a tension found in the literature regarding the weak-lensing mass det
Externí odkaz:
http://arxiv.org/abs/2011.07996
Autor:
Mirakhor, M. S., Walker, S. A., Bagchi, J., Fabian, A. C., Barth, A. J., Combes, F., Dabhade, P., Ho, L. C., Pandge, M. B.
We present a deep XMM-Newton observation of the extremely massive, rapidly rotating, relativistic-jet-launching spiral galaxy 2MASX J23453268-0449256. Diffuse X-ray emission from the hot gaseous halo around the galaxy is robustly detected out to a ra
Externí odkaz:
http://arxiv.org/abs/2010.15131
Autor:
Dabhade, P., Rottgering, H. J. A., Bagchi, J., Shimwell, T. W., Hardcastle, M. J., Sankhyayan, S., Morganti, R., Jamrozy, M., Shulevski, A., Duncan, K. J.
Publikováno v:
A&A 635, A5 (2020)
Giant radio galaxies (GRGs) are a subclass of radio galaxies which have grown to megaparsec scales. GRGs are much rarer than normal sized radio galaxies (< 0.7 Mpc) and the reason for their gigantic sizes is still debated. Here, we report the biggest
Externí odkaz:
http://arxiv.org/abs/1904.00409
MRC 0116+111 is a nearby ($z=0.132$) poor galaxy group, which was previously known for exhibiting a bright diffuse radio emission with no central point-like source, presumably related to a past activity of the active galactic nucleus (AGN) in its cen
Externí odkaz:
http://arxiv.org/abs/1902.09560
Autor:
Pandge, M. B., Monteiro-Oliveira, R., Bagchi, J., Simionescu, A., Limousin, M., Raychaudhury, S.
We present a comprehensive multi-wavelength analysis of the merging galaxy cluster MACS~J0417.5-1154 at a redshift of $z=0.44$, using available images red obtained with \chandra\ in X-ray, {\it Subaru}, {\it Hubble Space Telescope} (HST) in optical,
Externí odkaz:
http://arxiv.org/abs/1810.12071
Autor:
Pandey-Pommier, M., Richard, J., Combes, F., Edge, A., Guiderdoni, B., Narasimha, D., Bagchi, J., Jacob, J.
Massive galaxy clusters are the most violent large scale structures undergoing merger events in the Universe. Based upon their morphological properties in X-rays, they are classified as un-relaxed and relaxed clusters and often host (a fraction of th
Externí odkaz:
http://arxiv.org/abs/1612.00225
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Autor:
Kharb, P., Lal, D. V., Singh, V., Bagchi, J., Chandra, C. H. Ishwara, Hota, A., Konar, C., Wadadekar, Y., Shastri, P., Das, M., Baliyan, K., Nath, B. B., Pandey-Pommier, M.
We present detailed science cases that a large fraction of the Indian AGN community is interested in pursuing with the upcoming Square Kilometre Array (SKA). These interests range from understanding low luminosity active galactic nuclei in the nearby
Externí odkaz:
http://arxiv.org/abs/1610.08174