Документ взят из кэша поисковой машины. Адрес оригинального документа : http://www.naic.edu/vscience/schedule/tpfiles/KorpelatagA2805tp.pdf Дата изменения: Sat Jan 26 01:44:05 2013 Дата индексирования: Mon Feb 4 22:45:49 2013 Кодировка: Поисковые слова: http astrokuban.info astrokuban

Proposal Identification No.:

A2805

Date Received:

2013-Jan-24 20:50:02

Technical Page
This proposal has not been submitted before. Proposal Type: General Category: Sub-Category: Observation Category: Total Time Requested: Minimum Useful Time: Prop osal Title: ABSTRACT: Director Discretionary Time Astronomy Continuum Extragalactic 2 Hours 45 min

A Method to Measure the Number Density of the Intergalactic Plasma

A topic of very high interest in the astronomical community is the abundance of the intergalactic plasma inside and outside clusters of galaxies. Fifty percent of the baryons of the near universe have evaded detection (Cen, R., and Ostriker, J.P., 1999, ApJ, 514, 1) and are conjectured to be in this plasma. Some data exist on the plasma inside clusters but virtually no data is available on the intergalactic medium outside clusters. A recent work (Lieu, R. and Duan, L., 2013, ApJ, 763, L44) explored the consequences of dispersion on random wave packet sequences by a plasma, and showed that the radio emission from quasars should exhibit random intensity fluctuations in the millisecond range due to the intergalactic medium. We request Director's Discretionary Time to obtain millisecond timing data from quasars to test this method before submitting a proposal to observe a large number of quasars.

Name Eric J Korpela

Institution University of California, Berkeley

E-mail korpela@ssl.berkeley.edu

Phone 510-643-6538

Student no

Remote Observing Request

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

Instrument Setup
L-wide Atmospheric Observation Instruments:

Sp ecial Equipment or setup: We will be utilizing the Mock Spectrometer in single pixel mode for this work. 1


RFI Considerations Frequency Ranges Planned

2