47 citations
- D. Bhattacharya2 profiles4 · h 29
- S. M. Bhattacharjee4 · h 18
- Suratna Das2 profiles4 · h 2
- Aritra Das3 · h 1
- Dipankar Bhattacharya2 profiles3 · h 4
- Somak Raychaudhury2 profiles3 · h 35
- U. physics3 · h 29
- V. Bhalerao3 profiles3 · h 32
- Yashas Shende3 · h 1
- A. A. Nizami2 · h 12
- Arghya Pathak2 · h 1
- D. Gupta2 · h 1
- Inter-University Centre for Astronomy and AstrophysicsIN11 papers
- Indian Institute of Technology BombayIN5 papers
- Kavli Institute for Particle Astrophysics and CosmologyUS4 papers
- Indian Institute of Technology KharagpurIN3 papers
- Physical Research LaboratoryIN3 papers
- California Institute of TechnologyUS2 papers
- Centre National de la Recherche ScientifiqueFR2 papers
- Goddard Space Flight CenterUS2 papers
- Indian Institute of AstrophysicsIN2 papers
- Indian Institute of Science Education and Research MohaliIN2 papers
- Indian Institute of Technology GandhinagarIN2 papers
- Stanford UniversityUS2 papers
8 papers · 1 filter
Can We Find the Emission Mechanism Behind the Extremely Bright GRB 230812B?
Utkarsh Pathak, Sameer K. Patil, Hitesh Tanenia +23
GRB 230812B is a bright long-duration GRB with a luminous, long-lived afterglow and an AstroSat/CZTI polarization measurement during the prompt phase, enabling a joint study of its…
Episode-wise spectro-polarimetry of GRB 220107A: Testing the hypothesis of evolving radiation mechanisms
Rahul Gupta, Rushikesh Sonawane, Shabnam Iyyani +17
We investigate the spectro-polarimetric properties of the long-duration GRB~220107A, which exhibited two distinct emission episodes separated by a 40 s quiescent gap, to test wheth…
Ultraluminous X-ray sources in the group-centric elliptical galaxy NGC 5813
T. R. Rajalakshmi, Somak Raychaudhury, Indulekha Kavila +1
The number of Ultraluminous X-ray Sources (ULXs) is observed to be correlated with the current star formation rate in late-type galaxies and with the stellar mass in early-type gal…
On Bactrian glitch-size distributions
Anantharaman Sekharipuram Viswanathan, Dipankar Bhattacharya
A glitch is a rare and sudden increase in the otherwise steadily decreasing rotation rate of a pulsar. Its cause is widely attributed to the transfer of angular momentum to the cru…
Fast-varying time lags in the Quasi-periodic Oscillation in GRS 1915+105
Tomaso M. Belloni, Mariano Mendez, Federico Garcia +1
The properties of sub-second time variability of the X-ray emission of the black-hole binary GRS 1915+105 are very complex and strictly connected to its patterns of variability obs…
Contrasting X-ray/UV time-lags in Seyfert 1 galaxies NGC 4593 and NGC 7469 using AstroSat observations
Kavita Kumari, G. C. Dewangan, I. E. Papadakis +6
We study accretion disk-corona connection in Seyfert 1 galaxies using simultaneous UV/X-ray observations of NGC 4593 (July 14-18, 2016) and NGC 7469 (October 15-19, 2017) performed…