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Direct observations from BТА 17.02.2017 reveal the variability of redback MSP J1023+0038. Characteristics of PSR optical variability, radio-X-ray transition, and polarimetry are examined. Flare analysis, periodical variations, and nature of fluctuations are explored. Future plans include studying variability in orbital phases and searching for reprocessed pulsar radiation.
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Direct observations of transformation of low-massive binaries to millisecond radio pulsars and back Detection of variability of "redback" MSP J1023+0038 BТА 17.02.2017, 3.5 h MANIA Ю.Шибанов, Г.Бескин, С.Карпов, В.Плохотниченко, В.Соколов, Д.Зюзин, А.Холтыгин, Ю.Барышев,
OPTICAL VARIABILITYWHT- Tmin ~ 10-20 c, Apr 2014 T. Shahbaz et al, 2015
Total light curve (3.5h). B-band (psr, star, psr/star), window – 1.2 s
Light curve fragment,U(20s)&B(1.2s), U/B(20s), brigther-more red
Polarimetry, B (12 s), P = 1.5 ± 0.5 %
Flares(--0.12c,--0.4c), rising time 0.2 – 1s, duration 0.5 – 30 s
Flares(--0.12c,--0.4c), rising time 0.2 – 1s, duration 0.5 – 30 s
Flares(--0.12c,--0.4c), rising time 0.2 – 1s, duration 0.5 – 30 s
Flares(--0.12c,--0.4c), rising time 0.2 – 1s, duration 0.5 – 30 s
Flares(--0.12c,--0.4c), rising time 0.2 – 1s, duration 0.5 – 30 s
Flares(--0.12c,--0.4c), rising time 0.2 – 1s, duration 0.5 – 30 s
Flares(--0.12c,--0.4c), rising time 0.2 – 1s, duration 0.5 – 30 s
Flares(--0.12c,--0.4c), rising time 0.2 – 1s, duration 0.5 – 30 s
Flares(--0.12c,--0.4c), rising time 0.2 – 1s, duration 0.5 – 30 s
Summary • Stochastical variability at the times0.5 s - minut es, amplitude1.2 – 1.5, rising timetill to 0.2 s • Degree of linear polarization ~ 1.5 % at the time scale 10 min • Corellation of U and B~ 0.7, flux increasing - "reddening" • Sometimes periodical variations were detected P= 2.3 – 2.8 s • Nature: thermal fluctuations in the disc, synhrotron in tangled magnetic field?, hot spots on tht alven alven surface ?
ПЛАНЫ • Характеристики переменности в разных орбитальных фазах • Спектры вспышек • Поляризация периодической компоненты • Поиски переработанного периодического излучения пульсара