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Quasars probing intermediate redshift star-forming galaxies
P. Noterdaeme, R. Srianand, V. Mohan
We present a sample of 46 [OIII]-emitting galaxies at z<0.8 detected in the fibre spectra of quasars from the SDSS-DR7 through an automatic search procedure. We also detect [OII] a…
Probing spectral properties of radio-quiet quasars searched for optical microvariability
Hum Chand, Paul J. Wiita, Alok C. Gupta
We obtained SDSS spectra for a set of 37 radio-quiet quasars (RQQSOs) that had been previously examined for rapid small scale optical variations, or microvariability. Their H-beta…
Optical identification of XMM sources in the CFHTLS
C. S. Stalin, P. Petitjean, R. Srianand +3
We present optical spectroscopic identifications of X-ray sources in ~3 square degrees of the XMM-Large Scale Structure survey (XMM-LSS), also covered by the Canada France Hawaii T…
Cosmic ray driven outflows from high redshift galaxies
Saumyadip Samui, Kandaswamy Subramanian, Raghunathan Srianand
We study winds in high redshift galaxies driven by a relativistic cosmic ray (proton) component in addition to the hot thermal gas component. Cosmic rays (CRs) are likely to be eff…
SDSS J092712.64+294344.0: recoiling black hole or merging galaxies?
M. Vivek, R. Srianand, P. Noterdaeme +2
We report long-slit spectroscopic observations of SDSS J092712+294344 carried-out at the recently commissioned 2m telescope in IUCAA Girawali Observatory, India. This AGN-like sour…
Evolution of the cosmological mass density of neutral gas from Sloan Digital Sky Survey II - Data Release 7
P. Noterdaeme, P. Petitjean, C. Ledoux +1
We present the results of a search for damped Lyman-alpha (DLA) systems in the Sloan Digital Sky Survey II (SDSS), Data Release 7. We use a fully automatic procedure to identify DL…