Zobrazeno 1 - 10
of 277
pro vyhledávání: '"Singh, Chandra B"'
Autor:
Huang, Jun-Xiang, Singh, Chandra B.
We present simulation results examining the presence and behavior of standing shocks in zero-energy low angular momentum advective accretion flows and explore their (in)stabilities properties taking into account various specific angular momentum, $\l
Externí odkaz:
http://arxiv.org/abs/2412.12817
The Rayleigh Taylor instability (RTI) occurs at the interface between two fluids of different densities, notably when a heavier fluid sits above a lighter one in an effective gravitational field. This instability is relevant to many astrophysical sys
Externí odkaz:
http://arxiv.org/abs/2411.03347
Autor:
Singh, Chandra B., Williams, Michael, Garofalo, David, Castillo, Luis Rojas, Taylor, Landon, Harmon, Eddie
Publikováno v:
Universe 2024, 10(8), 319
Mature radio galaxies such as M87 belong to a specific subclass of active galaxies (AGN) whose evolution in time endows them with five distinguishing characteristics, including (1) low excitation emission, (2) low star formation rates, (3) high bulge
Externí odkaz:
http://arxiv.org/abs/2409.17514
For the first time, in March 2024, the transient Galactic black hole candidate Swift J151857.0-572147 experienced an outburst. Using publicly available archived {\it Insight}-HXMT data, we analyze the timing and spectral features of this source. Thro
Externí odkaz:
http://arxiv.org/abs/2406.17629
The transient Galactic black hole candidate Swift\,J1727.8-1613 went through an outburst for the very first time in August 2023 and lasted for almost 6 months. We study the timing and spectral properties of this source using publicly available archiv
Externí odkaz:
http://arxiv.org/abs/2405.01498
Autor:
Mondal, Santanu, Suribhatla, S. Pujitha, Chatterjee, Kaushik, Singh, Chandra B., Chatterjee, Rwitika
We study the spectro-polarimetric properties of a newly discovered black hole X-ray binary Swift\,J151857.0-572147 jointly using {\it IXPE} and {\it NuSTAR} observations during March 2024. The analysis of {\it IXPE} data reports the first detection o
Externí odkaz:
http://arxiv.org/abs/2404.09643
The counter-rotation between black holes and accretion disk configuration was introduced over a decade ago to elucidate the nature of the radio loud/radio-quiet dichotomy and the jet-disk connection, but has since been applied to a plethora of observ
Externí odkaz:
http://arxiv.org/abs/2403.14153
Autor:
Singh, Chandra B., Garofalo, David
Publikováno v:
Volume 39, August 2023, Pages 21-26
That jetted active galactic nuclei (AGN) are also hosted in spiral galaxies is now well established. Our understanding of how such objects might fit in the radio loud AGN subclass has been described by Foschini and others over the past decade in that
Externí odkaz:
http://arxiv.org/abs/2306.11243
We examine the time delay between radio and X-ray and between narrow radio frequency flares in Sagittarius A* (Sgr A*), from analyses of the synchrotron, bremsstrahlung and monochromatic luminosity curves. Using the results of 2D relativistic radiati
Externí odkaz:
http://arxiv.org/abs/2304.03925
Jet re-orientation associated with the time evolution of radio quasars explains the formation of X-shaped radio galaxies and their preference for isolated environments. But since X-shaped radio galaxies are generally not found in dense environments (
Externí odkaz:
http://arxiv.org/abs/2210.12961