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U 0115+ 634

Abstract:

MH Finger, M. Scott and K. Hagedon, Universities Space Research Association; RB Wilson and CA Wilson, NASA/Marshall Space Flight Center; M. Stollberg and WS Paciesas, University of Alabama, Huntsville; and TA Prince and B. Vaughan, California Institute of Technology, report for the BATSE/Compton GRO Observatory pulsar team:" Pulsed hard x-ray flux is currently being detected from the transient x-ray pulsar 4U 0115+ 634. The source was detected on Nov. 18, when the rms pulsed flux (20-50 keV) was approximately 15 mCrab. This is the first detection by BATSE of this source since the outburst that occurred during 1994 May 8-June 27 (IAUC 5990, 5999). On 1995 Nov. 21 the rms pulsed flux (20-50 keV) was approximately 70 mCrab. The pulse frequencies observed from Nov. 19 to 21 are consistent with a neutron-star spin rate of 0.2766635+/-0.0000003 Hz at epoch JD 2450042 and a spin-up rate of 1 …

Año de publicación:

1995

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    Acceso abierto

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        Contribuidores:

        Israel Jacob Sánchez DuranIsrael Jacob Sánchez Duran