Radiation Induced Void in the Spectrum of TOL 1038-2712

Abstract

Detection of a large void ($\sim$7 Mpc) is reported between the redshifts 2.16286 and 2.20748 in the Ly~$\alpha$ forest of TOL 1038-2712. This void is centered near a foreground QSO TOL 1037-2704 which is at a distance $\sim$4.4 Mpc away from the void. The estimated probability for the void to occure by chance in front of the foreground QSO is few times $10^{-3}$. Various implications of the void being produced by excess ionization due to foreground QSO are discussed.

4 pages, latex 3 figures available on request at [email protected]

References in corpus (2)

• The Optical Identification of a Primeval Galaxy at z >~ 4.4
• Analysis of Ly $\alpha$ absorption lines in the vicinity of QSOs

Cited by in corpus (11)

• Voids in the Simulated Local Universe
• Semi analytic approach to understanding the distribution of neutral hydrogen in the universe: Comparison of simulations with observations
• The proximity effect in a close group of QSOs
• Quasars near the line of sight towards Q 0302-003 and the transverse proximity effect
• The transverse proximity effect in spectral hardness on the line of sight towards HE 2347-4342
• Semi analytic approach to understanding the distribution of neutral hydrogen in the universe
• The Low-Redshift Lyman Alpha Forest toward PKS 0405-123
• Metal Absorption Systems in Spectra of Pairs of QSOs
• Probing the environment of high-z quasars using the proximity effect in projected quasar pairs
• Constraining the ratio of median pixel optical depth profile around z ~ 4 quasars using the longitudinal proximity effect
• The formation of voids in a universe with cold dark matter and a cosmological constant