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SETI with Help from Five Million Volunteers: The Berkeley SETI Efforts

Korpela, E. J. and Anderson, D. P. and Bankay, R. and Cobb, J. and Foster, G. and Howard, A. and Lebofsky, M. and Marcy, G. and Parsons, A. and Siemion, A. and von Korff, J. and Werthimer, D. and Douglas, K. A. (2009) SETI with Help from Five Million Volunteers: The Berkeley SETI Efforts. In: Bioastronomy 2007: Molecules, Microbes and Extraterrestrial Life. 420. Astronomical Society of the Pacific , San Francisco, CA, pp. 431-437. ISBN 978-1-58381-720-9.

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We summarize radio and optical SETI programs based at the University of California, Berkeley. The ongoing SERENDIP V sky survey searches for radio signals at the 300 meter Arecibo Observatory. The currently installed configuration supports 128 million channels over a 200 MHz bandwidth with 1.6 Hz spectral resolution. Frequency stepping allows the spectrometer to cover the full 300 MHz band of the Arecibo L-band receivers. The final configuration will allow data from all 14 receivers in the Arecibo L-band Focal Array to be monitored simultaneously with over 1.8 billion simultaneous channels. SETI@home uses desktop computers volunteers to analyze over 100 TB of at taken at Arecibo. Over 5 million volunteers have run SETI@home during its 10 year history. The SETI@home sky survey is 10 times more sensitive than SERENDIP V but it covers only a 2.5 MHz band, centered on 1420 MHz. SETI@home searches a much wider parameter space, including 14 octaves of signal bandwidth and 15 octaves of pulse period with Doppler drift corrections from -100 Hz/s to +100 Hz/s. The ASTROPULSE project is the first SETI search for μs time scale pulses in the radio spectrum. Because short pulses are dispersed by the interstellar medium, and amount of dispersion is unknown, ASTROPULSE must search through 30,000 possible dispersions. Substantial computing power is required to conduct this search, so the project will use volunteers and their personal computers to carry out the computation (using distributed computing similar to SETI@home). The SEVENDIP optical pulse search looks for ns time scale pulses at visible wavelengths. It utilizes an automated 30 inch telescope, three ultra fast photo multiplier tubes and a coincidence detector. The target list includes F,G,K and M stars, globular cluster and galaxies.

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Howard, A.0000-0001-8638-0320
Marcy, G.0000-0002-2909-0113
Additional Information:© 2009 Astronomical Society of the Pacific. This work has been supported by the Planetary Society, the Seti Institute, the University of California, Sun Microsystems and donations from individuals around the planet. Key hardware was donated by Network Appliance, Xilinx, Fujifilm Computers, Toshiba, Quantum, Hewlett Packard, and Intel Corp. We receive excellent support from the staff of the Arecibo Observatory, a facility of the NSF, managed by Cornell University. SETI@home and Astropulse have been supported in part by NSF Grants AST- 0808175 and AST-0307956, and NASA Grant NNX09AN69.
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The Planetary Society (TPS)UNSPECIFIED
University of CaliforniaUNSPECIFIED
Sun MicrosystemsUNSPECIFIED
Series Name:420
Record Number:CaltechAUTHORS:20170705-140759967
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Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:78772
Deposited By: Tony Diaz
Deposited On:05 Jul 2017 22:41
Last Modified:03 Oct 2019 18:11

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