From the 1 of 7 linked papers with an AI index.
7 papers
Tidal Grinding of Dwarf Galaxies in Cluster Environments
Sanjaya Paudel, Suk-Jin Yoon, Tek Prasad Adhikari +4
The paper investigates how the shapes of dwarf elliptical galaxies in the Virgo cluster relate to their tidal histories, finding that flatter dwarfs are more uniformly distributed…
NICER Perspective on TeV Blazar Mrk~421: X-ray Variability and Particle Acceleration
Sangeetha Kizhakkekalam, Gopal Bhatta, Navaneeth P K +1
Mrk~421 is one of the most fascinating blazars, widely studied across the electromagnetic spectrum using observations at various wavebands, from radio to the TeV gamma ray bands. W…
A constant pressure model for the warm absorber in Mrk 509
Krzysztof Hryniewicz, Agata RóżaÅska, Tek Prasad Adhikari +3
We present the analysis of 900 ks high-resolution RGS XMM-Newton observations of the nearby Seyfert galaxy Mrk 509 with the use of a self-consistent warm absorber (WA) model. We pe…
Deterministic and Stochastic Study of the X-ray Emission from the TeV Blazar Mrk~421
Radim Pánis, Gopal Bhatta, Tek P. Adhikari +6
We present a comprehensive timing analysis of X-ray data from the {\it XMM-Newton} satellite, examining 50 light curves covering 17 years of observations of the blazar Mrk~421. Thi…
Changing Look AGN: A study of Optical/UV and the Highly Ionized Fe K X-ray Line Flux Variations Using Photo-Ionization Simulations
Tek P. Adhikari, Santanu Mondal, Zhicheng He +2
Significant variability in broad emission line strengths of active galactic nuclei (AGN) over months to years has been observed, often accompanied by intrinsic continuum changes. S…
Probing X-ray Timing and Spectral Variability in the Blazar PKS 2155-304 Over a Decade of XMM-Newton Observations
Gopal Bhatta, Suvas C. Chaudhary, Niraj Dhital +5
Blazars, a class of active galactic nuclei (AGN) powered by supermassive black holes, are known for their remarkable variability across multiple timescales and wavelengths. Despite…