Zobrazeno 1 - 10
of 618
pro vyhledávání: '"Agrawal, V. P."'
In this paper, we explore some significant properties associated with a fractal operator on the space of all continuous functions defined on the Sierpi\'nski Gasket (SG). We also provide some results related to constrained approximation with fractal
Externí odkaz:
http://arxiv.org/abs/2206.14419
AstroSat view of the newly discovered X-ray transient MAXI~J1803--298 in the Hard-intermediate state
We perform comprehensive temporal and spectral analysis of the newly discovered X-ray transient MAXI~J1803--298 using an AstroSat target of opportunity observation on May 11, 2021 during its outburst. The source was found to be in the hard intermedia
Externí odkaz:
http://arxiv.org/abs/2112.03556
Autor:
P., Athulya M., D., Radhika, Agrawal, V. K., T., Ravishankar B., Naik, Sachindra, Mandal, Samir, Nandi, Anuj
We present a comprehensive study of GRS 1915+105 in wide energy band ($0.5-60$ keV) using AstroSat observations during the period of $2016-2019$. The MAXI X-ray lightcurve of the source shows rise and decay profiles similar to canonical outbursting b
Externí odkaz:
http://arxiv.org/abs/2110.14467
We present a detailed spectral and timing analysis of Cygnus X-1 with multi-epoch observations, during $2016$ to $2019$, by SXT and LAXPC on-board AstroSat. We model the spectra in broad energy range of $0.5\!-\!70.0\,\rm{keV}$ to study the evolution
Externí odkaz:
http://arxiv.org/abs/2108.01130
We performed the timing and spectral studies of a Z source GX 17+2 observed from Astrosat LAXPC instrument. Cross-Correlation function (CCF) was performed using soft (3-5 keV) and hard (16-40 keV) X -ray bands across the hardness intensity diagram an
Externí odkaz:
http://arxiv.org/abs/2103.05794
Autor:
Gulati, Sanna, Bhattacharya, Debbijoy, Bhattacharyya, Subir, Bhatt, Nilay, Stalin, C. S., Agrawal, V. K.
Publikováno v:
MNRAS, Volume 503, Issue 1, May 2021, Pages 446-457
We carried out a detailed study of the temporal and broadband spectral behaviour of one of the brightest misaligned active galaxies in gamma-rays, NGC 1275 utilising 11 years of Fermi, and available Swift and AstroSat observations. Based on the cumul
Externí odkaz:
http://arxiv.org/abs/2101.11540
In this paper, the notion of dimension preserving approximation for real-valued bivariate continuous functions, defined on a rectangular domain $\rectangle$, has been introduced and several results, similar to well-known results of bivariate constrai
Externí odkaz:
http://arxiv.org/abs/2101.07146
We present the first results of extragalactic black hole X-ray binaries LMC X-1 and LMC X-3 using all the archival and legacy observations by AstroSat during the period of $2016-2020$. Broadband energy spectra ($0.5-20$ keV) of both sources obtained
Externí odkaz:
http://arxiv.org/abs/2012.11918
We present the detection of type C quasi-periodic oscillation (QPO) along with upper harmonic at respective frequencies of $\sim0.6$ Hz and $\sim1.2$ Hz in the single AstroSat observation taken during the 2016 outburst of the low-mass black hole X-ra
Externí odkaz:
http://arxiv.org/abs/2012.11656
IGR J17091--3624 is a transient galactic black hole which has a distinct quasi-periodic variability known as `heartbeat', similar to the one observed in GRS 1915+105. In this paper, we report the results of $\sim 125$ ks \textit{AstroSat} observation
Externí odkaz:
http://arxiv.org/abs/2011.13282