Zobrazeno 1 - 10
of 145
pro vyhledávání: '"Kale, Ruta"'
Publikováno v:
January 2024, Monthly Notices of the Royal Astronomical Society 527(4):10986-10992
We report the discovery of a radio relic in the northeastern periphery of the cluster Abell 2108 (A2108). A2108 is a part of the uGMRT LOw-MAss Galaxy Cluster Survey (GLOMACS), where our main aim is to search for diffuse radio emission signatures in
Externí odkaz:
http://arxiv.org/abs/2312.04170
Autor:
Giacintucci, Simona, Venturi, Tiziana, Markevitch, Maxim, Brunetti, Gianfranco, Clarke, Tracy, Kale, Ruta
We present radio and X-ray studies of A3444 and MS1455.0+2232, two galaxy clusters with radio minihalos in their cool cores. A3444 is imaged using the Giant Metrewave Radio Telescope (GMRT) at 333, 607 and 1300 MHz and the Very Large Array at 1435 MH
Externí odkaz:
http://arxiv.org/abs/2312.02824
Autor:
Santra, Ramananda, Kale, Ruta, Giacintucci, Simona, Markevitch, Maxim, Luca, Federico De., Bourdin, Herve, Venturi, Tiziana, Dallacasa, Daniele, Cassano, Rossella, Brunetti, Gianfranco, Buch, Kaushal
We present the first detailed analysis of the ultra-steep spectrum radio halo in the merging galaxy cluster Abell 521, based on upgraded Giant Metrewave Radio telescope (uGMRT) observations. The combination of radio observations (300-850 MHz) and arc
Externí odkaz:
http://arxiv.org/abs/2311.09717
We report a discovery of a large-scale bent radio jet in the merging galaxy cluster Abell 514 ($z = 0.071$). The radio emission originates from the two radio lobes of the AGN located near the center of the southern subcluster and extends towards the
Externí odkaz:
http://arxiv.org/abs/2310.00914
Autor:
Veledina, Alexandra, Muleri, Fabio, Poutanen, Juri, Podgorný, Jakub, Dovčiak, Michal, Capitanio, Fiamma, Churazov, Eugene, De Rosa, Alessandra, Di Marco, Alessandro, Forsblom, Sofia, Kaaret, Philip, Krawczynski, Henric, La Monaca, Fabio, Loktev, Vladislav, Lutovinov, Alexander A., Molkov, Sergey V., Mushtukov, Alexander A., Ratheesh, Ajay, Cavero, Nicole Rodriguez, Steiner, James F., Sunyaev, Rashid A., Tsygankov, Sergey S., Zdziarski, Andrzej A., Bianchi, Stefano, Bright, Joe S., Bursov, Nikolaj, Costa, Enrico, Egron, Elise, Garcia, Javier A., Green, David A., Gurwell, Mark, Ingram, Adam, Kajava, Jari J. E., Kale, Ruta, Kraus, Alex, Malyshev, Denys, Marin, Frédéric, Matt, Giorgio, McCollough, Michael, Mereminskiy, Ilia A., Nizhelsky, Nikolaj, Piano, Giovanni, Pilia, Maura, Pittori, Carlotta, Rao, Ramprasad, Righini, Simona, Soffitta, Paolo, Shevchenko, Anton, Svoboda, Jiri, Tombesi, Francesco, Trushkin, Sergei, Tsybulev, Peter, Ursini, Francesco, Weisskopf, Martin C., Wu, Kinwah, Agudo, Iván, Antonelli, Lucio A., Bachetti, Matteo, Baldini, Luca, Baumgartner, Wayne H., Bellazzini, Ronaldo, Bongiorno, Stephen D., Bonino, Raffaella, Brez, Alessandro, Bucciantini, Niccolò, Castellano, Simone, Cavazzuti, Elisabetta, Chen, Chien-Ting, Ciprini, Stefano, Del Monte, Ettore, Di Gesu, Laura, Di Lalla, Niccolò, Donnarumma, Immacolata, Doroshenko, Victor, Ehlert, Steven R., Enoto, Teruaki, Evangelista, Yuri, Fabiani, Sergio, Ferrazzoli, Riccardo, Gunji, Shuichi, Hayashida, Kiyoshi, Heyl, Jeremy, Iwakiri, Wataru, Jorstad, Svetlana G., Karas, Vladimir, Kislat, Fabian, Kitaguchi, Takao, Kolodziejczak, Jeffery J., Latronico, Luca, Liodakis, Ioannis, Maldera, Simone, Manfreda, Alberto, Marinucci, Andrea, Marscher, Alan P., Marshall, Herman L., Massaro, Francesco, Mitsuishi, Ikuyuki, Mizuno, Tsunefumi, Negro, Michela, Ng, Chi-Yung, O'Dell, Stephen L., Omodei, Nicola, Oppedisano, Chiara, Papitto, Alessandro, Pavlov, George G., Peirson, Abel L., Perri, Matteo, Pesce-Rollins, Melissa, Petrucci, Pierre-Olivier, Possenti, Andrea, Puccetti, Simonetta, Ramsey, Brian D., Rankin, John, Roberts, Oliver, Romani, Roger W., Sgrò, Carmelo, Slane, Patrick, Spandre, Gloria, Swartz, Doug, Tamagawa, Toru, Tavecchio, Fabrizio, Taverna, Roberto, Tawara, Yuzuru, Tennant, Allyn F., Thomas, Nicholas E., Trois, Alessio, Turolla, Roberto, Vink, Jacco, Xie, Fei, Zane, Silvia
How black holes consume and eject matter has been the subject of intense studies for more than 60 years. The luminosity of these systems are often compared to the Eddington limit, the border at which the spherical accretion is inhibited by the radiat
Externí odkaz:
http://arxiv.org/abs/2303.01174
Radio Frequency Interference (RFI) of impulsive nature is created by sources like sparking on high-power transmission lines due to gap or corona discharge and automobile sparking, and it affects the entire observing frequency bands of low-frequency r
Externí odkaz:
http://arxiv.org/abs/2301.07402
Autor:
Paul, Surajit, Kale, Ruta, Datta, Abhirup, Basu, Aritra, Sur, Sharanya, Parekh, Viral, Gupta, Prateek, Chatterjee, Swarna, Salunkhe, Sameer, Iqbal, Asif, Pandey-Pommier, Mamta, Raja, Ramij, Rahaman, Majidul, Raychaudhury, Somak, Nath, Biman B., Majumdar, Subhabrata
Publikováno v:
Vol. 44, page 38, year 2023, Journal of Astrophysics and Astronomy
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:
http://arxiv.org/abs/2211.01393
Autor:
Buch, Kaushal D., Kale, Ruta, Naik, Kishor D., Aragade, Rahul, Muley, Mekhala, Kudale, Sanjay, B, Ajith Kumar
Publikováno v:
Journal of Astronomical Instrumentation, Vol. 11, No. 2 (2022) 2250008 (12 pages)
Electromagnetic radiation from human activities, known as man-made Radio Frequency Interference (RFI), adversely affects radio astronomy observations. In the vicinity of the Upgraded Giant Metrewave Radio Telescope (uGMRT) array, the sparking on powe
Externí odkaz:
http://arxiv.org/abs/2209.09504
Autor:
Kurahara, Kohei, Akahori, Takuya, Kale, Ruta, Akamatsu, Hiroki, Fujita, Yutaka, Gu, Liyi, Intema, Huib, Nakazawa, Kazuhiro, Okabe, Nobuhiro, Omiya, Yuki, Parekh, Viral, Shimwell, Timothy, Takizawa, Motokazu, van Weeren, Reinout
We report on results of our upgraded Giant Metrewave Radio Telescope (uGMRT) observations for an early-stage merging galaxy cluster, CIZA J1358.9-4750 (CIZA1359), in Band-3 (300--500 MHz). We achieved the image dynamic range of $\sim 38,000$ using th
Externí odkaz:
http://arxiv.org/abs/2208.04750
We present original GMRT radio observations of the galaxy cluster Abell~725, at a redshift of 0.09, along with other archival observations. Our GMRT maps reveal two steep-spectrum diffuse filaments in the cluster, along with a previously reported arc
Externí odkaz:
http://arxiv.org/abs/2110.03153