High time resolution multi-band photo-polarimetric observations of the binary millisecond redback pulsar J1023+0038 with the BTA G.M. Beskin, S.V. Karpov, V. L. Plokhotnichenko, Yu. A. Shibanov, D. A. Zyuzin, A.F. Kholtygin, V.V. Sokolov, Yu.V. Baryshev

Abstract

      We briefly report first results of high time resolution optical multiband panoramic photo- polarimetric observations of the eclipsing binary millisecond redback pulsar J1023+0038 obtained in February 2017 with the 6 m BTA telescope. Our data show that the pulsar still remained in the low- mass X-ray binary stage, which is characterised by rapid flaring at time scales of 10-100 s with amplitudes of 0.2-0.5 mag. We resolved a fine structure of the flares at time scales of 0.1-10 s. The polarimetry at the time scale of 12 s shows no variable polarization with an upper limit of 2-4% for the linear polarization degree in the flaring and quiet stages. We shortly outline implications of the results.

Reference:
G.M. Beskin, S.V. Karpov, V. L. Plokhotnichenko, Yu. A. Shibanov, D. A. Zyuzin, A.F. Kholtygin, V.V. Sokolov, Yu.V. Baryshev, "High time resolution multi-band photo-polarimetric observations of the binary millisecond redback pulsar J1023+0038 with the BTA" in Proceedings of The International Conference "SN 1987A, Quark Phase Transition in Compact Objects and Multimessenger Astronomy", Russia, Terskol (BNO INR RAS), Nizhnij Arkhyz (SAO RAS), 2-8 July 2017, INR RAS, Moscow, 2018, ISBN 978-5-94274-327-7, pp. 24-31.
DOI: 10.26119/SAO.2020.1.52286
Download .pdf