Can I read AT2018lqh: Black Hole Born from a Rotating Star? on EtoBox?

AT2018lqh: Black Hole Born from a Rotating Star? by Tsuna, Daichi; Kashiyama, Kazumi; Shigeyama, Toshikazu is a scholarly article available to read on EtoBox.

What is AT2018lqh: Black Hole Born from a Rotating Star? about?

Recently an intriguing transient AT 2018lqh, with only a day-scale duration and a high luminosity of $7\times 10^{42}\ {\rm erg\ s^{-1}}$, has been discovered. While several possibilities are raised on its origin, the nature of this transient is yet to be unveiled. We propose that a black hole (BH) with $\sim 30\, M_\odot$ forming from a rotating blue supergiant can generate a transient like AT 2018lqh. We find that this scenario can consistently explain the optical/UV emission and the tentative late-time X-ray detection, as well as the radio upper limits. If super-Eddington accretion onto the nascent BH powers the X-ray emission, continued X-ray observations may be able to test the presence of an accretion disk around the BH.

Author

Tsuna, Daichi; Kashiyama, Kazumi; Shigeyama, Toshikazu

Published

2021

Language

EN