6 citations · 29 across the 10 of their papers we have counts for
10 papers
TeV-PeV Gamma-ray and Neutrino Emission in the Galactic Plane
Saikat Das, Nayantara Gupta, Siyao Xu
We model the LHAASO observation of diffuse TeV--PeV rays in the Galactic plane as the sum of unresolved leptonic emission from pulsar wind nebulae and hadronic emission from su…
Cosmogenic Origin of KM3-230213A: Delayed Gamma-Ray Emission from A Cosmic-Ray Transient
Sovan Boxi, Saikat Das, Nayantara Gupta
The highest-energy cosmic neutrino detected by the ARCA detector of KM3NeT has reignited the quest to pinpoint the sources of ultrahigh-energy cosmic rays (UHECRs; E…
Explaining the Origin of TeV Gamma Rays from M87 During High and Low States
Nibedita Mondal, Sandeep Kumar Mondal, Nayantara Gupta
The detection of very high-energy gamma-rays from M87 can provide crucial insights into particle acceleration and radiation mechanisms in jets. The recent observations by the Large…
Cosmic Clues from Amaterasu: Blazar-Driven Ultrahigh-Energy Cosmic Rays?
Saikat Das, Srijita Hazra, Nayantara Gupta
The detection of the Amaterasu event of energy 244 EeV by the Telescope Array, one of the most energetic ultrahigh-energy cosmic rays (UHECRs; EeV) observed to date,…
Unraveling the Nature of HAWC J1844-034 with Fermi-LAT Data Analysis and Multi-wavelength Modeling
Sovan Boxi, Saptarshi Ghosh, Nayantara Gupta
The extended ultra-high-energy (UHE) gamma-ray source HAWC J1844-034 is closely associated with two other sources, HAWC J1843-032 and HWC J1846-025. Moreover, other gamma-ray obser…
Measuring the Intensity of the Interstellar Radiation Field with Ultra-high Energy ray Spectra
Nayantara Gupta
Our understanding of the intensity distribution of the interstellar radiation background is based on the observational data from IRAS, COBE-FIRAS and Planck. The intensity of this…
Multiple Emission Regions in Jets of Low Luminosity Active Galactic Nucleus in NGC 4278
Samik Dutta, Nayantara Gupta
The Large High Altitude Air Shower Observatory (LHAASO) has detected very high energy gamma rays from the LINER galaxy NGC 4278, which has a low luminosity active galactic nucleus,…
HESS J1809-193: Gamma-Ray Emission by Cosmic Rays from Past Explosion
Sovan Boxi, Nayantara Gupta
The very high energy gamma-ray source HESS J1809-193 has been detected by the LHAASO and HAWC observatory beyond 100 TeV energy. It is an interesting candidate for exploring the un…
Study of Temporal and Spectral variability for Blazar PKS 1830-211 with Multi-Wavelength Data
Jayant Abhir, Raj Prince, Jophin Joseph +2
A study of the gravitationally lensed blazar PKS 1830-211 was carried out using multi waveband data collected by Fermi-LAT, Swift-XRT and Swift-UVOT telescopes between MJD 58400 to…
Broadband Modelling of Orphan Gamma Ray Flares
S. R. Patel, D. Bose, N. Gupta +1
Blazars, a class of highly variable active galactic nuclei, sometimes exhibit Orphan -ray flares. These flares having high flux only in -ray energies do not show significant…