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Proposal Identification No.:

A2774 Arecibo Observatory

Date Received: 2013-Nov-09 00:44:59 William E. Gordon Telescope Observing Time Request COVER SHEET

Section I - General Information
Submitted for Sep 1 2013. This proposal has been submitted before. The previous proposal number is A2774. Proposal Type: General Category: Sub-Category: Observation Category: Time Requested this semester: Hours already used for this pro ject: Additional Hours required to complete pro ject: Minimum Useful Time: Expected Data Storage: Prop osal Title: ABSTRACT: Commensal Astronomy Spectroscopy SETI All ALFA time All ALFA time 0 hours less than 100 GB

SETI Surveys at Arecibo: SETI@home, Astropulse, and SERENDIP

Using the 7-beam Arecibo L-band Feed Array (ALFA), a SETI spectrometer (SERENDIP V.v,soon to be replaced by SERENDIP VI), and a real-time multibeam RF data recorder (the SETI@home II data recorder) we have been conducting a high sensitivity survey of the entire sky visible to the NSF's Arecibo observatory. Our volunteer computing pro ject, SETI@home utilizes computers donated by our volunteers to search for narrow band and repeating waveforms at a large range of Doppler drifts representing a wide range of accelerations of the transmitter Using the data recorded in this survey we perform a high sensitivity search for short duration (ms to us scale) dispersed pulses using our public resource distributed computing pro ject known as Astropulse. Our hardware spectrometer SERENDIP V.v (and soon SERENDIP VI) performs a less sensitive search over a much wider bandwidth. Outreach Abstract: We propose to continue our three suveys searching for extraterrestrial intelligence using the Arecibo telescope. SETI@home and Astropulse distribute the data to hundreds of thousands of users worldwide who analyze the data on their home computers and return the results to us. SERENDIP V.v and SERENDIP VI are special purpose supercomputers located at Arecibo that do a less detailed analysis on a much wider frequency band.

Name Dan Werthimer Eric J Korpela

Institution University of California Univerisity of California

E-mail danw@ssl.berkeley.edu korpela@ssl.berkeley.edu

Phone 510-642-6997 510-643-6538

Student no no

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Additional Authors
Andrew Siemion, University of California, siemion@berkeley.edu

This work is not part of a thesis.

Remote Observing Request

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

Section I I - Time Request
The following times are in LST. For these observations night-time is not needed.

Begin ­ End Interval­Interval 0 ­ ­ ­ ­ 24

Days Needed at This Interval 0

Time Constraints (Must Be Justified in the Prop osal Text) We would like to cover the sky with ALFA completely at least two times, preferably three. Since we do not request our own observing time, we accept commensal observations with any other ALFA pro ject. Regarding data we have our own data storage. Full disks are to be shipped to Berkeley as our shipping boxes are filled.

Section I I I - Instruments Needed
ALFA Atmospheric Observation Instruments:

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Description of Observer Equipment: SERENDIP V.v, SERENDIP VI, and the SETI@home II data recorder Sp ecial Equipment or setup:

none

Section IV - RFI Considerations Frequency Ranges Planned

Section V - Observing List Target List

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