Open AccessChange of the structure and physical properties of optical pulsations from transitional millisecond pulsar J1023+0038
Author(s) -
A. S. Tanashkin,
G. Beskin,
С. Карпов,
V. L. Plokhotnichenko,
Yu. A. Shibanov,
D. A. Zyuzin
Publication year - 2022
Publication title -
astronomy at the epoch of multimessenger studies. proceedings of the vak-2021 conference, aug 23–28, 2021
Language(s) - English
Resource type - Conference proceedings
DOI - 10.51194/vak2021.2022.1.1.115
Subject(s) - physics , polarimeter , pulsar , millisecond pulsar , amplitude , neutron star , photometer , telescope , astrophysics , orbital period , observatory , millisecond , astronomy , optics , stars , polarimetry , scattering
In this paper we present some results of high temporal resolution multichannel optical observations of a transitional mil-lisecond pulsar J1023+0038 with the panoramic photometer-polarimeter mounted on the 6-meter BTA telescope of SpecialAstrophysical Observatory. Besides the double-peaked optical pulsations with the neutron star rotation period, similar tothose reported by other authors, during one of the nights we observed dramatic state change of the system. For about 230seconds instead of typical double-peaked structure single peak with strongly increased amplitude was seen. Simultaneousobservations in two channels also allowed us to detect energy redistribution in the spectrum of the system in this event. Wealso note chaotic orbital phase changes of the signal with maximum amplitude of about 25 seconds, corresponding to thelinear shifts of about 3000 kilometers.