409 citations
- Indian Institute of AstrophysicsIN239 papers
- Tata Institute of Fundamental ResearchIN122 papers
- Chinese Academy of SciencesCN86 papers
- Pandit Ravishankar Shukla UniversityIN84 papers
- Inter-University Centre for Astronomy and AstrophysicsIN83 papers
- The College of New JerseyUS72 papers
- Deen Dayal Upadhyaya Gorakhpur UniversityIN70 papers
- Centre National de la Recherche ScientifiqueFR66 papers
- Physical Research LaboratoryIN66 papers
- Kumaun UniversityIN63 papers
- Instituto de Astrofísica de AndalucíaES60 papers
- National Central UniversityTW59 papers
937 papers
Comprehensive X-ray Study of Giant Radio Galaxies with XMM-Newton and Chandra
Niraj Maurya, Satish S. Sonkamble, Suraj Dhiwar +3
We present a systematic X-ray spectral analysis of 27 giant radio galaxies (GRGs) using archival \textit{XMM-Newton} and \textit{Chandra} data. Roughly 44\% of the sample show intr…
Peculiar Behavior of Optical Polarization in Blazar 1ES 1959+650: Role of Jet Magnetic Field and Geometry
A. Singh, A. Tolamatti, K. K. Singh +2
Measurements of high degree of optical polarization from blazars provide a strong evidence for the optically thin synchrotron radiation from the relativistic leptons in the jet. Th…
22 Newly Identified Repeating Changing-look AGNs and Evidence for Extreme Broad-line Region Breathing
Litao Zhu, Zhongxiang Wang, Alok C. Gupta +5
Changing-look active galactic nuclei (CL AGNs) show the appearance or disappearance of broad emission lines on timescales of years. Among them, the repeating CL (RCL) AGNs may prov…
A candidate cyclotron line at 1.89 keV in the ultraluminous X-ray source NGC 4861 X-2
Sinan Allak, Lorenzo Ducci, Valery F. Suleimanov +6
In this Letter, we report the detection of an absorption-like feature at ~1.89 keV in Chandra/ACIS spectra of the ultraluminous X-ray source NGC 4861 X-2, based on the deepest obse…
Visualizing the Magnetic Structure in Interplanetary Coronal Mass Ejections with ATHARV
Vivek Menon, Jyoti Sheoran, Vaibhav Pant +1
Interplanetary coronal mass ejections (ICMEs) are major drivers of space weather, and their geoeffectiveness is strongly governed by the structure and orientation of their internal…
High-precision K2/TESS Photometry and HERMES Spectroscopy of Four Bright Field Stars
Otto Trust, Santosh Joshi, Benard Nsamba +13
Space-based photometry from K2 and TESS, coupled with high-resolution spectroscopy, provides a unique opportunity to re-examine the variability and chemical nature of four bright s…