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- Indian Institute of Technology GandhinagarIN282 papers
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4 papers · 2 filters
Precursor flares in OJ 287
P. Pihajoki, M. Valtonen, S. Zola +19
We have studied three most recent precursor flares in the light curve of the blazar OJ 287 while invoking the presence of a precessing binary black hole in the system to explain th…
Giant pulse emission from PSR B0950+08
Ashok K. Singal, Hari Om Vats
We present here the detection of giant-pulse emission from PSR B0950+08, a normal-period pulsar. The observations, made at 103 MHz and lasting for about ten months, have shown on a…
Why is IGR J17091-3624 so faint? Constraints on distance, mass, and spin from `phase-resolved' spectroscopy of the `heartbeat' oscillations
Anjali Rao, S. V. Vadawale
IGR J17091--3624 is a transient X-ray source and is believed to be a Galactic black hole candidate. Recently, it has received a considerable attention due to the detection of pecul…
Gyro-orbit size, brightness temperature limit and implausibility of coherent emission by bunching in synchrotron radio sources
Ashok K. Singal
We show that an upper limit on the maximum brightness temperature for a self-absorbed incoherent synchrotron radio source is obtained from the size of its gyro orbits, which in tur…