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Journal article
THE CHANDRA VIEW OF THE LARGEST QUASAR LENS SDSS J1029+2623
The Astrophysical journal, v 758(1), pp 1-10
10 Oct 2012
Abstract
We present results from Chandra observations of the cluster lens SDSS J1029+2623 at z(l) = 0.58, which is a gravitationally lensed quasar with the largest known image separation. We clearly detect X-ray emission both from the lensing cluster and the three lensed quasar images. The cluster has an X-ray temperature of kT = 8.1(-1.2)(+2.0) keV and bolometric luminosity of L-X = 9.6 x 10(44) erg s(-1). Its surface brightness is centered near one of the brightest cluster galaxies, and it is elongated east-west. We identify a subpeak northwest of the main peak, which is suggestive of an ongoing merger. Even so, the X-ray mass inferred from the hydrostatic equilibrium assumption appears to be consistent with the lensing mass from the Einstein radius of the system. We find significant absorption in the soft X-ray spectrum of the faintest quasar image, which can be caused by an intervening material at either the lens or source redshift. The X-ray flux ratios between the quasar images (after correcting for absorption) are in reasonable agreement with those at optical and radio wavelengths, and all the flux ratios are inconsistent with those predicted by simple mass models. This implies that microlensing effect is not significant for this system and dark matter substructure is mainly responsible for the anomalous flux ratios.
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Details
- Title
- THE CHANDRA VIEW OF THE LARGEST QUASAR LENS SDSS J1029+2623
- Creators
- Naomi Ota - Nara Women's UniversityMasamune Oguri - Institute for the Physics and Mathematics of the UniverseXinyu Dai - University of OklahomaChristopher S. Kochanek - The Ohio State UniversityGordon T. Richards - Drexel UniversityEran O. Ofek - Weizmann Institute of ScienceRoger D. Blandford - Kavli Institute for Particle Astrophysics and CosmologyTim Schrabback - Kavli Institute for Particle Astrophysics and CosmologyNaohisa Inada - National Institute of Technology, Nara College
- Publication Details
- The Astrophysical journal, v 758(1), pp 1-10
- Publisher
- Iop Publishing Ltd
- Number of pages
- 10
- Grant note
- 1009756 / Direct For Mathematical & Physical Scien; National Science Foundation (NSF); NSF - Directorate for Mathematical & Physical Sciences (MPS) 23740161 / Grants-in-Aid for Scientific Research; Ministry of Education, Culture, Sports, Science and Technology, Japan (MEXT); Japan Society for the Promotion of Science; Grants-in-Aid for Scientific Research (KAKENHI) 22740124 / Ministry of Education, Culture, Sports, Science and Technology; Ministry of Education, Culture, Sports, Science and Technology, Japan (MEXT) AST-1009756; AST-0444059-001 / NSF; National Science Foundation (NSF) GO0-11147B / NASA/SAO; National Aeronautics & Space Administration (NASA) World Premier International Research Center Initiative (WPI Initiative), MEXT, Japan; Ministry of Education, Culture, Sports, Science and Technology, Japan (MEXT) 23740161 / JSPS; Ministry of Education, Culture, Sports, Science and Technology, Japan (MEXT); Japan Society for the Promotion of Science GO0-11147A / Smithsonian Astrophysics Observatory
- Resource Type
- Journal article
- Language
- English
- Academic Unit
- Physics
- Web of Science ID
- WOS:000309520500026
- Scopus ID
- 2-s2.0-84866715642
- Other Identifier
- 991019169689904721
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- Collaboration types
- Domestic collaboration
- International collaboration
- Web of Science research areas
- Astronomy & Astrophysics