18 citations · 65 across the 13 of their papers we have counts for
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Spectral variability in NGC 1042 ULX1
Tanuman Ghosh, Vikram Rana
We report X-ray spectral variability in an ultraluminous X-ray source NGC 1042 ULX1, using archival XMM-Newton and recent NuSTAR observations. In long-term evolution, the source ha…
Synchrotron cutoff in Ultraluminous X-ray sources
Tanuman Ghosh, Shiv Sethi, Vikram Rana
The origin of spectral curvature at energies keV in ultraluminous X-ray sources is not well understood. In this paper, we propose a novel mechanism based on synchrotro…
A Green Pea starburst arising from a galaxy-galaxy merger
S. Purkayastha, N. Kanekar, J. N. Chengalur +3
Green Pea galaxies are low-redshift starburst dwarf galaxies, with properties similar to those of the high-redshift galaxies that reionized the Universe. We report the first mappin…
Hard X-ray flares and spectral variability in NGC 4395 ULX1
Tanuman Ghosh, Vikram Rana, Matteo Bachetti
We report the detection of flaring events in NGC 4395 ULX1, a nearby ultraluminous X-ray source (ULX), for the first time, using recent XMM-NEWTON observations. The flaring episode…