International Conference
The multi-messenger astronomy:
gamma-ray bursts, search for electromagnetic counterparts to
neutrino events and gravitational waves

7-14 October 2018

The study of coherent pulsations of optical emission of PSR J1023+0038 millisecond pulsar G. Beskin, S. Karpov, V. Plokhotnichenko, Yu. Shibanov, D. Zyuzin

Abstract

      We observed the PSR J1023+0038 millisecond redback pulsar in its accreting regime on two nights in Nov 2017 on the Russian 6-m telescope with a high temporal resolution panoramic photometer-polarimeter in two-channel ("blue" and "red") setup. During 400 seconds of nearly 3 hours of total observations, we detected coherent optical pulsations in both color bands with 1.69 ms period, corresponding to the rotational period of neutron star known from radio data, with amplitudes of 2.1% ("red") and 1.3% ("blue"). Corresponding luminosity of pulsed component is about 10³¹ erg/s and may be caused by a synchrotron emission of electrons with moderate Lorentz factors close to a light cylinder during the interaction of accretion disk with ejected matter modulated with rotational period.

Reference:
G. Beskin, S. Karpov, V. Plokhotnichenko, Yu. Shibanov, D. Zyuzin. "The study of coherent pulsations of optical emission of PSR J1023+0038 millisecond pulsar", in Proceedings of the International Conference "The multi-messenger astronomy: gamma-ray bursts, search for electromagnetic counterparts to neutrino events and gravitational waves", Russia, Nizhnij Arkhyz (SAO RAS), Terskol (BNO INR RAS), October, 7 - 14, 2018, Publishing house SNEG, Pyatigorsk, 2019, ISBN 978-5-6041711-1-0, pp. 37-43.
DOI: 10.26119/SAO.2019.1.35494
Download .pdf