Detection of a 5 H[CLC]z[/CLC] Quasi-periodic Oscillation from X-Ray Nova GRS 1739−278 | Zendy

K. Borozdin | Zendy; S. Trudolyubov | Zendy

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Detection of a 5 H[CLC]z[/CLC] Quasi-periodic Oscillation from X-Ray Nova GRS 1739−278

Author(s) -

K. Borozdin,

S. Trudolyubov

Publication year - 2000

Publication title -

the astrophysical journal

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 2.376

H-Index - 489

eISSN - 1538-4357

pISSN - 0004-637X

DOI - 10.1086/312625

Subject(s) - physics , nova (rocket) , astrophysics , oscillation (cell signaling) , state (computer science) , black hole (networking) , x ray , optics , chemistry , computer network , routing protocol , routing (electronic design automation) , aeronautics , algorithm , computer science , engineering , link state routing protocol , biochemistry

The X-ray nova GRS 1739-278 flared up near the Galactic center in the spring of 1996. Here we report on the discovery of an approximately 5 Hz quasi-periodic oscillation (QPO) in Rossi X-Ray Timing Explorer/PCA observations of GRS 1739-278. The QPO was only present when the source was in its very high state and disappeared later, when it made a transition down into the high state. We present the energy spectra of this black hole candidate measured in both high and very high states and discuss the similarities between this system and other X-ray transients.

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