Zobrazeno 1 - 10
of 43
pro vyhledávání: '"Chandra, C. H. Ishwara"'
Autor:
Narang, Mayank, Puravankara, Manoj, Vedantham, H. K., Chandra, C. H. Ishwara, De, Ayanabha, Tyagi, Himanshu, Banerjee, Bihan, Nayak, Prasanta K., Surya, Arun, Shridharan, B., Pathak, Vinod C., Tripathi, Mihir
Coherent radio emission with properties similar to planetary auroral signals has been reported from GJ 1151, a quiescent, slow-rotating mid-M star, by the LOFAR Two-metre (120-170 MHz) Sky Survey (LoTSS). The observed {LOFAR} emission is fairly brigh
Externí odkaz:
http://arxiv.org/abs/2409.18507
Hub-filament systems (HFSs) being the potential sites of formation of star clusters and high mass stars, provide a test bed for the current theories that attempt to explain star formation globally. It is thus important to study a large number of HFSs
Externí odkaz:
http://arxiv.org/abs/2404.07640
Autor:
Dutta, Sushant, Singh, Veeresh, Chandra, C. H. Ishwara, Wadadekar, Yogesh, Kayal, Abhijit, Heywood, Ian
The remnant phase of a radio galaxy is characterized by the cessation of AGN activity resulting in the stoppage of jets supplying plasma to radio lobes. In this paper, we present the search and characterization of remnant candidates in 12.5 deg$^{2}$
Externí odkaz:
http://arxiv.org/abs/2212.10133
Publikováno v:
Journal of Astrophysics and Astronomy, 43, Article number: 96 (2022)
The cessation of AGN activity in radio galaxies leads to a remnant phase during which jets are no longer sustained, but lobes can be detected for a period of time before they fade away due to radiative and dynamical energy losses. The time-scale of t
Externí odkaz:
http://arxiv.org/abs/2207.07871
Publikováno v:
Journal of Astrophysics and Astronomy, Volume 43, Issue 2, Article ID 84 (2022)
Radio observations being insensitive to the dust-obscuration, have been exploited to unveil the population of Active Galactic Nuclei (AGN) residing in galaxies with large dust content. In this paper, we investigate the radio characteristics of 321 du
Externí odkaz:
http://arxiv.org/abs/2207.06938
Autor:
Potdar, Ajay, Das, Swagat R, Issac, Namitha, Tej, Anandmayee, Vig, Sarita, Chandra, C. H. Ishwara
This paper presents a multiwavelength investigation of the Galactic HII IRAS 17149$-$3916. Using the Giant Meterwave Radio Telescope, India, first low-frequency radio continuum observations at 610 and 1280 MHz for this region are presented. The ioniz
Externí odkaz:
http://arxiv.org/abs/2111.13869
We present archival Giant Metrewave Radio Telescope (GMRT) observations of two exoplanetary systems, $\tau$ Bo\"otis, and 55 Cancri, at 610 MHz and 150 MHz, respectively. Theoretical models predict these systems to have some of the highest expected f
Externí odkaz:
http://arxiv.org/abs/2106.15246
Autor:
Narang, Mayank, P, Manoj, Chandra, C. H. Ishwara, Lazio, Joseph, Henning, Thomas, Tamura, Motohide, Mathew, Blesson, Ujwal, Nitish, Mandal, Pritha
This paper reports Giant Metrewave Radio Telescope (GMRT) observations of the binary system HD 41004 that are among the deepest images ever obtained at 150~MHz and 400 MHz in the search for radio emission from exoplanets. The HD 41004 binary system c
Externí odkaz:
http://arxiv.org/abs/2011.06843
Autor:
Paliya, Vaidehi S., Pérez, Enrique, García-Benito, Rubén, Ajello, Marco, Prada, Francisco, Alberdi, Antxon, Suh, Hyewon, Chandra, C. H. Ishwara, Domínguez, Alberto, Marchesi, Stefano, Di Matteo, Tiziana, Hartmann, Dieter, Chiaberge, Marco
What triggers collimated relativistic outflows or jets, from the centers of galaxies remains a fundamental question in astrophysics. The merging of two galaxies has been proposed to realize the conditions to successfully launch and drive such jets in
Externí odkaz:
http://arxiv.org/abs/2004.02703
Autor:
Resmi, L., Schulze, S., Chandra, C. H. Ishwara, Misra, K., Buchner, J., De Pasquale, M., Ramirez, R. Sanchez, Klose, S., Kim, S., Tanvir, N. R., O'Brien, P. T.
Publikováno v:
The Astrophysical Journal, Volume 867, Issue 1, article id. 57, 10 pp. (2018)
The short gamma-ray burst (GRB) 170817A was the first GRB associated with a gravitational-wave event. Due to the exceptionally low luminosity of the prompt $\gamma$-ray and the afterglow emission, the origin of both radiation components is highly deb
Externí odkaz:
http://arxiv.org/abs/1803.02768