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DETECTION OF A POSSIBLE X-RAY QUASI-PERIODIC OSCILLATION IN THE ACTIVE GALACTIC NUCLEUS 1H 0707-495
Pan, HW; Yuan, WM; Yao, S; Zhou, XL; Liu, BF; Zhou, HY; Zhang, SN; Zhang SN(张双南)
2016
Source PublicationASTROPHYSICAL JOURNAL LETTERS
ISSN2041-8205
EISSN2041-8213
Volume819Issue:2Pages:L19
SubtypeArticle
AbstractThe quasi-periodic oscillation (QPO) detected in the X-ray radiation of black hole X-ray binaries (BHXBs) is thought to originate from dynamical processes in close vicinity of black holes (BHs), and thus carries important physical information therein. Such a feature is extremely rare in active galactic nuclei (AGNs) with supermassive BHs. Here we report on the detection of a possible X-ray QPO signal with a period of 3800 s at a confidence level >99.99% in the narrow-line Seyfert 1 galaxy (NLS1) 1H. 0707-495 in one data set in 0.2-10 keV taken with XMM-Newton. The statistical significance is higher than that of most previously reported QPOs in AGNs. The QPO is highly coherent (quality factor Q = nu/Delta n >= 15) with a high rms fractional variability (similar to 15%). A comprehensive analysis of the optical spectra of this AGN is also performed, yielding a central BH mass of 5.2. x 10(6) M-circle dot from the broad emission lines based on the scaling relation. The QPO follows the known frequency-BH mass relation closely, which spans from stellar-mass to supermassive BHs. The absence of QPOs in other observations of the object suggests that it is a transient phenomenon. We suggest that the (high-frequency) QPOs tend to occur in highly accreting BH systems, from BHXBs to supermassive BHs. Future precise estimation of the BH mass may be used to infer the BH spin from the QPO frequency.
Keywordgalaxies: active galaxies: nuclei galaxies: individual (1H 0707-495) X-rays: galaxies
DOI10.3847/2041-8205/819/2/L19
Indexed BySCI ; ADS
Language英语
WOS IDWOS:000371788300003
ADS Bibcode2016ApJ...819L..19P
ADS URLhttps://ui.adsabs.harvard.edu/abs/2016ApJ...819L..19P
ADS CITATIONShttps://ui.adsabs.harvard.edu/abs/2016ApJ...819L..19P/citations
inspireid1418150
Citation statistics
Cited Times:28 [INSPIRE]
Cited Times:35 [ADS]
Document Type期刊论文
Identifierhttp://ir.ihep.ac.cn/handle/311005/248077
Collection粒子天体物理中心
Recommended Citation
GB/T 7714
Pan, HW,Yuan, WM,Yao, S,et al. DETECTION OF A POSSIBLE X-RAY QUASI-PERIODIC OSCILLATION IN THE ACTIVE GALACTIC NUCLEUS 1H 0707-495[J]. ASTROPHYSICAL JOURNAL LETTERS,2016,819(2):L19.
APA Pan, HW.,Yuan, WM.,Yao, S.,Zhou, XL.,Liu, BF.,...&张双南.(2016).DETECTION OF A POSSIBLE X-RAY QUASI-PERIODIC OSCILLATION IN THE ACTIVE GALACTIC NUCLEUS 1H 0707-495.ASTROPHYSICAL JOURNAL LETTERS,819(2),L19.
MLA Pan, HW,et al."DETECTION OF A POSSIBLE X-RAY QUASI-PERIODIC OSCILLATION IN THE ACTIVE GALACTIC NUCLEUS 1H 0707-495".ASTROPHYSICAL JOURNAL LETTERS 819.2(2016):L19.
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