Propeller effect in the transient x-ray pulsar SMC X-2
Alexander A. Lutovinov; Juri Poutanen; Sergey S. Tsygankov; Sergey V. Molkov; Roman A. Krivonos
Propeller effect in the transient x-ray pulsar SMC X-2
Alexander A. Lutovinov
Juri Poutanen
Sergey S. Tsygankov
Sergey V. Molkov
Roman A. Krivonos
IOP PUBLISHING LTD
Julkaisun pysyvä osoite on:
https://urn.fi/URN:NBN:fi-fe2021042716868
https://urn.fi/URN:NBN:fi-fe2021042716868
Tiivistelmä
We report the results of the monitoring campaign of the transient X-ray pulsar SMC X-2 performed with the Swift/XRT telescope over the period of 2015 September-2016 January during the Type II outburst. During this event, the bolometric luminosity of the source ranged from similar or equal to 10(39) down to several x 10(34) erg s(-1). Moreover, we discovered its dramatic drop by a factor of more than 100 below the limiting value of L-lim similar or equal to 4 x 10(36) erg s(-1), which can be interpreted as a transition to the propeller regime. These measurements make SMC X-2 the sixth pulsating X-ray source where such a transition is observed and allow us to estimate the magnetic field of the neutron star in the system B similar or equal to 3 x 10(12) G, which is in agreement with independent results of the spectral analysis.
Kokoelmat
- Rinnakkaistallenteet [19206]