648 citations · 2.4k across the 43 of their papers we have counts for
12 papers · 1 filter
Upper Limit on the Cosmic Gamma-Ray Burst Rate from High Energy Diffuse Neutrino Background
Pijushpani Bhattacharjee, Sovan Chakraborty, Srirupa Das Gupta +1
We derive upper limits on the ratio , the ratio of the rate, , of long-duration Gamma Ray Burs…
Dynamics of dwarf-spheroidals and the dark matter halo of the Galaxy
R. Cowsik, Charu Ratnam, Pijushpani Bhattacharjee +1
Based on the observed paucity of the dwarf spheroidal (dSph) satellites of the Milky Way at small Galactocentric distances, we put forward the hypothesis that subsequent to the for…
Ultrahigh Energy Cosmic Rays and Prompt TeV Gamma Rays from Gamma Ray Bursts
Pijushpani Bhattacharjee, Nayantara Gupta
Gamma Ray Bursts (GRBs) have been proposed as one {\it possible} class of sources of the Ultrahigh Energy Cosmic Ray (UHECR) events observed up to energies $\gsim10^{20}\ev$. The s…
Detectability of Prompt TeV Gamma Rays of Proton Synchrotron Origin from Gamma Ray Bursts by AMANDA/ICECUBE Detectors
Pijushpani Bhattacharjee, Nayantara Gupta
The detectability of a possible ``high'' energy ($>100\gev$) component of Gamma-Ray Bursts (GRBs) using AMANDA/ICECUBE large area muon detectors is examined within the context of a…
Detecting TeV Gamma Rays from Gamma Ray Bursts by Ground Based Muon Detectors
Nayantara Gupta, Pijushpani Bhattacharjee
The possibility of detecting Gamma-Ray Bursts (GRB) in TeV energy range using large area muon detectors like AMANDA and Lake Baikal detector is examined. These detectors can detect…
Origin and Propagation of Extremely High Energy Cosmic Rays
Pijushpani Bhattacharjee, Guenter Sigl
Cosmic ray particles with energies in excess of 10**(20) eV have been detected. The sources as well as the physical mechanism(s) responsible for endowing cosmic ray particles with…