Discovery of 0.08 Hz QPO in the power spectrum of black hole candidate XTE J1118+480

Дата и время публикации : 2000-05-10T17:48:44Z

Авторы публикации и институты :
M. Revnivtsev (Space Research Institute, Moscow, Russia, MPA, Garching, Germany)
R. Sunyaev (MPA, Garching, Germany, Space Research Institute, Moscow, Russia)
K. Borozdin (Los Alamos National Laboratory, NM, USA, Space Research Institute, Moscow, Russia)

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Ссылка на журнал-издание: Astron.Astrophys.361:L37-L39,2000
Коментарии к статье: 3 pages, 2 figures, submitted in A&A Letters
Первичная категория: astro-ph

Все категории : astro-ph

Краткий обзор статьи: We found a strong QPO feature at 0.085+/-0.002 Hz in the power spectrum of X-ray transient XTE J1118+480. The QPO was detected in PCA/RXTE data with an amplitude close to 10% rms, and the width 0.034+/-0.006 Hz. The shape of the power spectrum is typical for black hole candidates: almost flat at frequencies lower than 0.03 Hz, roughly power law with slope ~1.2 from 0.03 to 1 Hz, with a following steepening to ~1.6 at higher frequencies. The hard energy spectrum detected up to ~150 keV and the absence of significant X-ray variability at the high frequencies above 100 Hz strongly support the identification of XTE J1118+480 as black hole transient.

Category: Physics