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Detecting the Transverse Proximity Effect: Radiative Feedback from QSOs

Gonçalves, T. S. and Steidel, C. C. (2007) Detecting the Transverse Proximity Effect: Radiative Feedback from QSOs. In: Cosmic frontiers. ASP Conference Series. No.379. Astronomical Society of the Pacific , San Francisco, CA, pp. 300-301. ISBN 978-1-58381-320-1.

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We present results of a search for absorbers close to QSOs near the line of sight of background quasars based on sensitive Keck/HIRES observations of the QSO triplet KP76, KP77, and KP78 (z=2.466, 2.535, and 2.615), with separations of 2-3 arcmin on the plane plane of the sky. Through the use of a high resolution spectra, together with accurate systemic redshifts of the QSOs using near-IR spectroscopy, we quantify the state of the IGM gas at the redshifts of the foreground QSOs. The inferred ionizing flux at the proper transverse distances probed is up to 100 times greater than the UV background. We show that the state of the gas has been significantly affected by the UV radiation from the foreground QSOs.

Item Type:Book Section
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Steidel, C. C.0000-0002-4834-7260
Additional Information:© 2007 Astronomical Society of the Pacific.
Series Name:ASP Conference Series
Issue or Number:379
Record Number:CaltechAUTHORS:20100917-080939614
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Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:19997
Deposited By: Tony Diaz
Deposited On:17 Sep 2010 21:32
Last Modified:03 Oct 2019 02:04

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