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56 papers
An investigation of the "10 keV feature" in the spectra of Accretion Powered X-ray Pulsars with NuSTAR
Hemanth Manikantan, Biswajit Paul, Vikram Rana
Some of the accreting X-ray pulsars are reported to exhibit a peculiar spectral feature at 10 keV, known as the "10 keV feature". The feature has been characterized as either…
Changes in the distribution of circum-binary material around the HMXB GX 301-2 during a rapid spin-up episode of the neutron star
Hemanth Manikantan, Biswajit Paul, Kinjal Roy +1
Some accretion powered X-ray pulsars with supergiant companion stars undergo occasional rapid spin-up episodes that last for weeks to a few months. We explore the changes in the ac…
Constraint on the accretion of NGC 6946 X-1 using broadband X-ray data
Tanuman Ghosh, Vikram Rana
We analyze broadband X-ray data of NGC 6946 X-1 and probe plausible accretion scenarios in this ULX. NGC 6946 X-1 is a persistent soft source with broadband continuum spectra descr…
Daksha: On Alert for High Energy Transients
Varun Bhalerao, Santosh Vadawale, Shriharsh Tendulkar +45
We present Daksha, a proposed high energy transients mission for the study of electromagnetic counterparts of gravitational wave sources, and gamma ray bursts. Daksha will comprise…
Science with the Daksha High Energy Transients Mission
Varun Bhalerao, Disha Sawant, Archana Pai +72
We present the science case for the proposed Daksha high energy transients mission. Daksha will comprise of two satellites covering the entire sky from 1~keV to ~MeV. The prima…
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…