Probing the LY Alpha Forest at 0.5 < Z < 1.6 Using Flaring Quasars & BL Lacs

Details Probing the LY Alpha Forest at 0.5 < Z < 1.6 Using Flaring Quasars & BL Lacs Probing the LY Alpha Forest at 0.5 < Z < 1.6 Using Flaring Quasars & BL Lacs

Jul 1994

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1994hst..prop.5379s&link_type=abstract

HST Proposal ID #5379

Physics

Hst Proposal Id #5379 Quasars &Amp, Agn Quasar Absorption

Scientific paper

We propose spectroscopic observations of flaring quasars and BL Lacs with the FOS + high resolution gratings to study the line density and clus- tering of Ly alpha only lines in the hitherto inaccessible redshift range 0.5 < z < 1.6. The purpose of these observations is to determine if continuity exists between the Ly alpha "forest" at Z > 2 and the local Ly alpha clouds recently discovered by HST. If continuity can be established, then detailed observations of the "local" clouds can be applied to the high-z clouds as well. Current and planned HST observa- tions do not address the Ly alpha forest in this redshift range because high-z QSOs are generally not bright enough to obtain spectra at high enough SNR to detect sufficient Ly alpha absorptions to conduct a statistical study. The virtue of our 6 targets is that while they are generally quiescent at V = 16-18, they occasionally flare to V < 15 for periods of several months making high SNR HST/FOS 1A resolution spectra (G190H and G270H) possible in a few ksecs. Past observations suggest that normal scheduling of these targets will be sufficient to observe them with HST in their Flaring state. Each of these proposed targets is being intensively monitored using several small aperture ground-based telescopes with CCD detectors so that a flare can be detected and HST observations scheduled when the source is bright.

Affiliated with

Also associated with

No associations

Rating

Probing the LY Alpha Forest at 0.5 < Z < 1.6 Using Flaring Quasars & BL Lacs does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Probing the LY Alpha Forest at 0.5 < Z < 1.6 Using Flaring Quasars & BL Lacs, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Probing the LY Alpha Forest at 0.5 < Z < 1.6 Using Flaring Quasars & BL Lacs will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1255700