13 citations · 54 across the 11 of their papers we have counts for
11 papers
Chandra Follow-up Observations of Swift-BAT-selected AGNs III
Isaiah S. Cox, Núria Torres-Albà, Stefano Marchesi +5
The cosmic X-ray background (CXB) is dominated by the obscured and unobscured coronal light of active galactic nuclei (AGN). At energies below 10 keV, the CXB can be well explained…
Detection of X-ray Polarization in the High Synchrotron Peaked Blazar 1ES 1959+650
Athira M. Bharathan, C. S. Stalin, Rwitika Chatterjee +4
We report the measurement of X-ray polarization in the high synchrotron peaked blazar 1ES 1959+650. Of the four epochsof observations from the {\it Imaging X-ray Polarimetry Explor…
On the properties of X-ray corona in Seyfert 1 galaxies
Indrani Pal, Anju A., H. Sreehari +4
We carried out a uniform and systematic analysis of a sample of 112 nearby bright Seyfert 1 type AGN, the observations of which were carried out by the Nuclear Spectroscopic Telesc…
X-ray polarization observations of IC 4329A with IXPE: Constraining the geometry of the X-ray corona
Indrani Pal, C. S. Stalin, Rwitika Chatterjee +1
X-ray polarimetry is a powerful tool to probe the geometry of the hot X-ray corona in active galactic nuclei (AGN). Here, we present our results on the characterisation of the X-ra…
Search for coronal temperature variation in Seyfert galaxies
Indrani Pal, C. S. Stalin
While the temperature of the X-ray corona () in active galactic nuclei (AGN) are known for many sources, its variation, if any, is limited to a handful of objects. This…
X-ray spectral and timing analysis of the Compton Thick Seyfert 2 galaxy NGC 1068
Indrani Pal, C. S. Stalin, M. L. Parker +2
We present the timing and spectral analysis of the Compton Thick Seyfert 2 active galactic nuclei NGC 1068 observed using {\it NuSTAR} and {\it XMM-Newton}. In this work for the fi…
NuSTAR spectral analysis of three Seyfert galaxies: NGC 3227, NGC 5548 and MR 2251178
Indrani Pal, C. S. Stalin, L. Mallick +1
The observed nuclear X-ray emission in the radio-quiet category of active galactic nuclei (AGN) is believed to be from a compact region, the corona situated in the vicinity of the…
TXS 1206+549: a new -ray detected narrow-line Seyfert 1 galaxy at redshift 1.34?
Suvendu Rakshit, Malte Schramm, C. S. Stalin +5
Radio and -ray loud narrow-line Seyfert 1 galaxies (NLS1s) are unique objects to study the formation and evolution of relativistic jets, as they are believed to have high accret…
Dust Reverberation Mapping of Z229-15
Amit Kumar Mandal, Suvendu Rakshit, C. S. Stalin +6
We report results of the dust reverberation mapping (DRM) on the Seyfert 1 galaxy Z229-15 at z = 0.0273. Quasi-simultaneous photometric observations for a total of 48 epochs were a…
REMAP: Determination of the inner edge of the dust torus in AGN by measuring time delays
Amit Kumar Mandal, Suvendu Rakshit, Indrani Pal +3
Active galactic nuclei (AGN) are high luminosity sources powered by accretion of matter onto SMBHs located at the centres of galaxies. The SMBH is surrounded by a broad emission li…
A Study on the Expanding Universe Based on a Model of the Time Variation of its Matter Content in the Framework of Brans-Dicke Theory
Sudipto Roy, Dibyajyoti Laha, Argho Aranya Sangma +1
A theoretical model of cosmic expansion has been formulated on an assumption of inter-conversion of matter and dark energy, in the framework of Brans-Dicke theory. An empirical sca…