Large area X-ray proportional counter (LAXPC) instrument on AstroSat and some preliminary results from its performance in the orbit

PC Agrawal, JS Yadav, HM Antia, D Dedhia… - Journal of Astrophysics …, 2017 - Springer
Large area X-ray propositional counter (LAXPC) instrument on AstroSat is aimed at
providing high time resolution X-ray observations in 3–80 keV energy band with moderate …

AstroSat: From inception to realization and launch

PC Agrawal - Journal of Astrophysics and Astronomy, 2017 - Springer
The origin of the idea of AstroSat multi wavelength satellite mission and how it evolved over
the next 15 years from a concept to the successful development of instruments for giving …

Study of recent outburst in the Be/X-ray binary RX J0209.6−7427 with AstroSat: a new ultraluminous X-ray pulsar in the Magellanic Bridge?

AD Chandra, J Roy, PC Agrawal… - Monthly Notices of the …, 2020 - academic.oup.com
We present the timing and spectral studies of RX J0209. 6–7427 during its rare 2019
outburst using observations with the Soft X-ray Telescope (SXT) and Large Area X-ray …

AstroSat observations of the Be/X-ray binary XTE J1946+ 274 during 2018 and 2021 outbursts

AD Chandra, J Roy, PC Agrawal - Research in Astronomy and …, 2023 - iopscience.iop.org
We present the timing and spectral studies of the Be/X-ray binary XTE J1946+ 274 during its
2018 and 2021 giant outbursts using observations with the SXT and LAXPC instruments on …

Detection of nearly periodic spin period reversals in Vela X-1 on long time-scales: inkling of solar-like cycle in the donor star?

AD Chandra, J Roy, PC Agrawal… - Monthly Notices of the …, 2021 - academic.oup.com
We explore the long-term evolution of the spin period of the high-mass X-ray binary pulsar
Vela X-1 over a period of 46 yr. Our analysis indicates nearly periodic variations in the spin …

LAXPC/AstroSat Study of∼ 1 and∼ 2 mHz Quasi-periodic Oscillations in the Be/X-Ray Binary 4U 0115+ 63 during Its 2015 Outburst

J Roy, PC Agrawal, NK Iyer… - The Astrophysical …, 2019 - iopscience.iop.org
The Be/X-ray binary 4U 0115+ 63 was observed by the Large Area X-ray Proportional
Counter (LAXPC) instrument on AstroSat on 2015 October 24 during the peak of a giant …

Probing broadband spectral energy distribution and variability of Mrk 501 in the low flux state

J Tantry, Z Shah, R Misra, N Iqbal, S Akbar - Journal of High Energy …, 2024 - Elsevier
We conducted a multi-wavelength analysis of the blazar Mrk 501, utilizing observations from
AstroSat (SXT, LAXPC), Swift-UVOT, and Fermi-LAT during the period August 15, 2016 to …

TIFR Zero-Pressure balloon program crosses a milestone

D Anand, BS Kumar, D Ojha - arxiv preprint arxiv:2103.11803, 2021 - arxiv.org
High altitude scientific balloons offer unique opportunities to carry scientific payloads to
stratospheric altitudes at a cost several orders of magnitude lower than corresponding …

AstroSat Observation of Recent Outburst in the Be/X-ray Binary LS V+ 4417/RX J0440. 9+ 4431

A Hussain, A Garg, R Misra, UD Goswami - arxiv preprint arxiv …, 2024 - arxiv.org
A Be/X-ray binary system known as RX J0440. 9+ 4431 (or LS V+ 44 17) is a potential
member of the uncommon gamma-ray binary class. With an orbital period of 150 days, this …

Possible detection of a new cyclotron feature in 4U 1700–37

S Bala, J Roy, D Bhattacharya - Monthly Notices of the Royal …, 2020 - academic.oup.com
We present a spectral and timing study of the high-mass X-ray binary transient source 4U
1700–37 using NuSTAR and ASTROSAT/LAXPC. The source is observed in two different …