135 citations · 2.1k across the 111 of their papers we have counts for
15 papers · 1 filter
A NICER look at thermonuclear X-ray bursts from Aql X-1
Tolga Guver, Tugba Boztepe, David R. Ballantyne +8
We present spectral and temporal properties of all the thermonuclear X-ray bursts observed from Aql X-1 by the Neutron Star Interior and Composition Explorer (NICER) between 2017 J…
NuSTAR monitoring of MAXI J1348-630: evidence of high density disc reflection
Sudip Chakraborty, Ajay Ratheesh, Sudip Bhattacharyya +4
We present the broadband spectral analysis of all the six hard, intermediate and soft state NuSTAR observations of the recently discovered transient black hole X-ray binary MAXI J1…
NuSTAR and Swift Observations of the Extragalactic Black Hole X-ray Binaries
Arghajit Jana, Sachindra Naik, Debjit Chatterjee +1
We present the results obtained from detailed spectral and timing studies of extra-galactic black hole X-ray binaries LMC~X--1 and LMC~X--3, using simultaneous observations with {\…
A month of monitoring the new magnetar Swift J1555.2-5402 during an X-ray outburst
Teruaki Enoto, Mason Ng, Chin-ping Hu +23
The soft gamma-ray repeater Swift J1555.2-5402 was discovered by means of a 12-ms duration short burst detected with Swift BAT on 2021 June 3. Then 1.6 hours after the first burst…
Broadband X-Ray Observations of the 2018 Outburst of the Changing-Look Active Galactic Nucleus NGC 1566
Arghajit Jana, Neeraj Kumari, Prantik Nandi +5
We study the nature of the changing-look Active Galactic Nucleus NGC 1566 during its June 2018 outburst. During the outburst, the X-ray intensity of the source rises up to ~25-30 t…
On the impact of an intermediate duration X-ray burst on the accretion environment in IGR J17062-6143
Peter Bult, Diego Altamirano, Zaven Arzoumanian +10
We report on a spectroscopic analysis of the X-ray emission from IGR J17062-6143 in the aftermath of its June 2020 intermediate duration Type I X-ray burst. Using the Neutron Star…
Complex optical/UV and X-ray variability in Seyfert 1 galaxy Mrk 509
Neeraj Kumari, Main Pal, Sachindra Naik +3
We performed a detailed spectral and timing analysis of a Seyfert 1 galaxy Mrk 509 using data from the Neil Gehrels Swift observatory that spanned over ~13 years between 2006 and 2…
NICER observations of the black hole candidate MAXI J0637430 during the 2019-2020 Outburst
Arghajit Jana, Gaurava K. Jaisawal, Sachindra Naik +5
We present detailed timing and spectral studies of the black hole candidate MAXI J0637430 during its 2019-2020 outburst using observations with the {\em Neutron Star Interior Co…
Accretion Properties of MAXI J1813-095 during its Failed Outburst in 2018
Arghajit Jana, Gaurava K. Jaisawal, Sachindra Naik +7
We present the results obtained from detailed timing and spectral studies of a black hole candidate MAXI~J1813-095 using {\it Swift}, {\it NICER}, and {\it NuSTAR} observations dur…
Time Domain Astronomy with the THESEUS Satellite
S. Mereghetti, S. Balman, M. Caballero-Garcia +74
THESEUS is a medium size space mission of the European Space Agency, currently under evaluation for a possible launch in 2032. Its main objectives are to investigate the early Univ…
Enhanced X-ray Emission Coinciding with Giant Radio Pulses from the Crab Pulsar
Teruaki Enoto, Toshio Terasawa, Shota Kisaka +34
Giant radio pulses (GRPs) are sporadic bursts emitted by some pulsars, lasting a few microseconds. GRPs are hundreds to thousands of times brighter than regular pulses from these s…
RX J0529.8-6556: a BeXRB pulsar with an evolving optical period and out of phase X-ray outbursts
H. Treiber, G. Vasilopoulos, C. D. Bailyn +12
We report the results of eROSITA and NICER observations of the June 2020 outburst of the Be/X-ray binary pulsar RX J0529.8-6556 in the Large Magellanic Cloud, along with the analys…
NICER Discovery of Millisecond X-ray Pulsations and an Ultracompact Orbit in IGR J17494-3030
Mason Ng, Paul S. Ray, Peter Bult +11
We report the detection of 376.05 Hz (2.66 ms) coherent X-ray pulsations in NICER observations of a transient outburst of the low-mass X-ray binary IGR J17494-3030 in 2020 October/…
Thermonuclear X-ray Bursts with late secondary peaks observed from 4U 1608-52
Tolga Guver, Tugba Boztepe, Ersin Gogus +11
We report the temporal and spectral analysis of three thermonuclear X-ray bursts from 4U 1608-52, observed by the Neutron Star Interior Composition Explorer (NICER) during and just…
AstroSat observations of eclipsing high mass X-ray binary pulsar OAO 1657-415
Gaurava K. Jaisawal, Sachindra Naik, Prahlad R. Epili +3
We present the results obtained from analysis of two AstroSat observations of the high mass X-ray binary pulsar OAO 1657-415. The observations covered 0.681-0.818 and 0.808-0.968 p…