88 citations
- Aryabhatta Research Institute of Observational SciencesIN10 papers
- Indian Institute of AstrophysicsIN6 papers
- Inter-University Centre for Astronomy and AstrophysicsIN6 papers
- Deen Dayal Upadhyaya Gorakhpur UniversityIN5 papers
- University of DelhiIN4 papers
- Kavli Institute for Theoretical SciencesCN3 papers
- Peking UniversityCN3 papers
- Saha Institute of Nuclear PhysicsIN3 papers
- Center for Excellence in Basic SciencesIN2 papers
- Central University of JammuIN2 papers
- Kumaun UniversityIN2 papers
- Physical Research LaboratoryIN2 papers
45 papers
Investigating the Circumgalactic Medium through Mg II absorption coincidence
Paryag Sharma, Raghunathan Srianand, Hum Chand +1
We present a statistical measurement of the transverse coherence of Mg II absorption using a large sample of 9204 absorber-centric quasar sightline pairs from t…
The eV-Scale Sterile Neutrino and Neutrinoless Double Beta Decay
Priya, Simran Arora, B. C. Chauhan
In short-baseline experiments such as LSND and MiniBooNE, an excess of electron neutrinos has been observed, originating from a muon neutrino beam. To address this anomaly, in the…
Evaporation of Primordial Black Holes in a Thermal Universe: A Thermofield Dynamics Approach
Ayan Chatterjee, Jitumani Kalita, Debaprasad Maity
We investigate the impact of a finite temperature environment on the Hawking radiation from black holes (BHs), with particular focus on Kerr BHs immersed in a cosmological thermal…
Spherical trapped surfaces in n-dimensional general relativity
Ayan Chatterjee, Suresh C. Jaryal, Akshay Kumar
In this paper, we examine gravitational collapse of matter fields in -dimensional general relativity. The matter energy-momentum tensor under consideration includes dust, perfec…
Brightness and colour variability in NLSy1s
Madhu Sudan, Hum Chand, Paul J. Wiita +1
The Zwicky Transient Facility (ZTF), with its extensive optical monitoring capabilities, has provided an unprecedented opportunity to study the long-term variability of active gala…
Circumgalactic medium of quasar host galaxies at 0.4<z<0.8 probed by strong Mg II absorption
Paryag Sharma, Raghunathan Srianand, Hum Chand +1
Using a sample of 166 projected quasar pairs we investigate the influence of active galactic nuclei on the circumgalactic medium (CGM) of the quasar host galaxies probed using stro…