14 citations · 29 across the 10 of their papers we have counts for
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astro-ph.HE2025
The alternating 'changing-look' blazar OQ 334 (B2 1420+32): New observational clues to the blazar state transitions
Krishan Chand, Gopal-Krishna
The high-luminosity blazar OQ 334 is a leading exponent of the intriguing rare phenomenon of alternating between a flat-spectrum radio quasar (FSRQ) and a BL Lac (BLL) states. Its…
astro-ph.HE2024
Intranight optical monitoring of the rare quasar J0950+5128, the brightest known candidate for transition from radio-quiet to radio-loud state
Krishan Chand, Gopal-Krishna, Hum Chand
We report a novel pilot project to characterise intra-night optical variability (INOV) of an extremely rare type of quasar, which has recently been caught in the act of transiting…
astro-ph.HE2022
Intranight optical variability of low-mass Active Galactic Nuclei: A Pointer to blazar-like activity
Gopal-Krishna, Krishan Chand, Hum Chand +4
This study aims to characterise, for the first time, intranight optical variability (INOV) of low-mass active galactic nuclei (LMAGN) which host a black hole (BH) of mass $M_{BH} \…