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Proposal Identification No.:

A2599

Date Received:

2010-Oct-01 18:02:13

Technical Page
Proposal Type: General Category: Sub-Category: Observation Category: Total Time Requested: Minimum Useful Time: Prop osal Title: ABSTRACT: Regular Astronomy Spectroscopy Extragalactic 45 Hours 1.0 hr

A Search for HI Absorption in an Unbiased Sample of High-z Radio Sources

We wish to study the fueling mechanism of Active Galactic Nuclei and its evolution with cosmic epoch. We intend to do this through HI absorption for an unbiased sample of high-z radio sources within the redshift ranges of 2.22 < z < 2.38 and 3.55 < z < 3.15. These observations would use the Arecibo 430 and 327 MHz receivers, the detection of absorption lines being optimized by using the Double Position Switching observing mode. Our source sample would increase the total number of sources at z > 2.0 examined for HI absorption from 12 to 65. A total observing time of 45 hours is requested.

Name Christopher J Salter

Institution NAIC

E-mail csalter@naic.edu

Phone 787-878-2612 X281

Student no

Remote Observing Request

X

Observer will travel to AO Remote Observing In Absentia (instructions to operator)

Instrument Setup
430 G 327

Atmospheric Observation Instruments:

Sp ecial Equipment or setup:

none

RFI Considerations

1


Frequency Ranges Planned
Elimination of as much on-Observatory generated RFI as possible in the 327 and 430 MHz bands

2