Exploratory Chandra observation of the ultraluminous quasar SDSS J010013.02+280225.8 at redshift 6.30

Journal Article · Wed Jun 01 04:00:00 EDT 2016 · Astrophysical Journal Letters

DOI:https://doi.org/10.3847/2041-8205/823/2/L37· OSTI ID:22869112

Ai, Yanli ^[1]; Dou, Liming ^[2]; Fan, Xiaohui ^[3]; Wang, Feige ^[4]; Wu, Xue-Bing ^[5]; Bian, Fuyan ^[6]

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1. School of Physics and Astronomy, Sun Yat-Sen University, Guangzhou 510275 (China)
2. Key Laboratory for Research in Galaxies and Cosmology, Astronomy Department, The University of Sciences and Technology of China, Hefei, Anhui 230026 (China)
3. Steward Observatory, University of Arizona, 933 North Cherry Avenue, Tucson, AZ 85721 (United States)
4. Department of Astronomy, School of Physics, Peking University, Beijing 100871 (China)
5. Kavli Institute for Astronomy and Astrophysics, Peking University, Beijing 100871 (China)
6. Research School of Astronomy and Astrophysics, Australian National University, Weston Creek, ACT 2611 (Australia)

We report exploratory Chandra observations of the ultraluminous quasar SDSS J010013.02+280225.8 at redshift 6.30. The quasar is clearly detected by Chandra with a possible component of extended emission. The rest-frame 2–10 keV luminosity is 9.0{sub −4.5}{sup +9.1} × 10{sup 45} erg s{sup −1} with an inferred photon index of Γ = 3.03{sub −0.70}{sup +0.78}. This quasar is X-ray bright, with an inferred X-ray-to-optical flux ratio α{sub ox} = −1.22{sub −0.05}{sup +0.07}, higher than the values found in other quasars of comparable ultraviolet luminosity. The properties inferred from this exploratory observation indicate that this ultraluminous quasar might be growing with super-Eddington accretion and probably viewed with a small inclination angle. Deep X-ray observations will help to probe the plausible extended emission and better constrain the spectral features for this ultraluminous quasar.

• OSTI ID: 22869112
• Journal Information: Astrophysical Journal Letters, Journal Name: Astrophysical Journal Letters Journal Issue: 2 Vol. 823; ISSN 2041-8205
• Country of Publication: United States
• Language: English

Related Subjects

79 ASTRONOMY AND ASTROPHYSICS
EMISSION
INCLINATION
KEV RANGE
LUMINOSITY
PHOTONS
QUASARS
RED SHIFT
ULTRAVIOLET RADIATION
X RADIATION