Zobrazeno 1 - 10
of 3 320
pro vyhledávání: '"Agrawal, P. K."'
Autor:
Bharathan, Athira M., Stalin, C. S., Sahayanathan, S., Wani, Kiran, Mandal, Amit Kumar, Chatterjee, Rwitika, Joshi, Santosh, Pandey, Jeewan C, Mathew, Blesson, Agrawal, Vivek K.
We present near-simultaneous X-ray and optical polarization measurements in the high synchrotron peaked (HSP) blazar Mrk 421. The X-ray polarimetric observations were carried out using {\it Imaging X-ray Polarimetry Explorer} ({\it IXPE}) on 06 Decem
Externí odkaz:
http://arxiv.org/abs/2409.16745
Autor:
Sahu, Pragati, Chand, Swadesh, Thakur, Parijat, Dewangan, G. C., Agrawal, V. K., Tripathi, Prakash, Das, Subhashish
We perform a comprehensive timing and broadband spectral analysis using an AstroSat observation of the low-mass black hole X-ray binary H~1743--322 during 2017 outburst. Additionally, we use two Swift/XRT observations, one of which is simultaneous wi
Externí odkaz:
http://arxiv.org/abs/2409.10253
We implemented symbolic regression techniques to identify suitable analytical functions that map various properties of neutron stars (NSs), obtained by solving the Tolman-Oppenheimer-Volkoff (TOV) equations, to a few key parameters of the equation of
Externí odkaz:
http://arxiv.org/abs/2407.08553
Publikováno v:
Phys. Lett. B (2024)
We obtain posterior distribution of equations of state (EOSs) across a broad range of density by imposing explicitly the constraints from precisely measured fundamental properties of finite nuclei, in combination with the experimental data from heavy
Externí odkaz:
http://arxiv.org/abs/2405.19733
We present the spectral and timing analyses of \textit{AstroSat} observations of the Black Hole X-ray Binary GX 339-4 when the source was close the peak of the outburst in 2024. We find that both the spectral and timing variability of the source is i
Externí odkaz:
http://arxiv.org/abs/2405.06090
Autor:
P, Shyam Prakash V, Agrawal, Vivek K.
We present the spectral and timing study of the bright NS-LMXB GX 5-1 using \textit{\textit{AstroSat}/LAXPC} and \textit{SXT} observations conducted in the year 2018. During the observation, the source traces out the complete HB and NB of the Z-track
Externí odkaz:
http://arxiv.org/abs/2404.02782
Publikováno v:
Publications of the Astronomical Society of Australia, 2024
We conducted a study on the X-ray polarization properties of MCG-5-23-16 by analyzing long-term monitoring data from {\it NuSTAR} jointly with {\it IXPE} observations made in May and November 2022. The re-analysis of {\it IXPE} data gives model-depen
Externí odkaz:
http://arxiv.org/abs/2403.14169
Autor:
Agrawal, Vivek K.
AstroSat observed transient neutron star low-mass X-ray binary XTE J1701-462 for a total duration of 135 ks during its 2022 outburst. The source traced a complete 'Z' shaped structure in the hardness intensity diagram (HID) during the observation. Th
Externí odkaz:
http://arxiv.org/abs/2403.07634
Spin and parity dependent nuclear level densities (NLDs) are obtained for configuration interaction shell model using a numerically efficient spectral distribution method. The calculations are performed for $^{24}$Na, $^{25,26,27}$Mg nuclei using ful
Externí odkaz:
http://arxiv.org/abs/2402.08889
The equations of state (EoSs) governing neutron star (NS) matter obtained for both non-relativistic and relativistic mean-field models are systematically confronted with a diverse set of terrestrial data and astrophysical observations within the Baye
Externí odkaz:
http://arxiv.org/abs/2401.06018