Документ взят из кэша поисковой машины. Адрес оригинального документа : http://www.naic.edu/vscience/schedule/2013Spring/TaylortagA2772.pdf Дата изменения: Tue Sep 11 04:14:24 2012 Дата индексирования: Mon Feb 4 22:42:28 2013 Кодировка: Поисковые слова: arp 220

Proposal Identification No.:

A2772 Arecibo Observatory

Date Received: 2012-Sep-03 18:22:58 William E. Gordon Telescope Observing Time Request COVER SHEET

Section I - General Information
Submitted for Sep 1 2012. This proposal has been submitted before. The previous proposal number is A2130. Proposal Type: General Category: Sub-Category: Observation Category: Time Requested this semester: Hours Next 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: Large Astronomy Continuum Extragalactic 306 78 1561 6.2 over 500 GB

Completion of GALFACTS Observations

This proposal request time for the last 20% of observations to complete the GALFA Continuum Transit Survey (GALFACTS). GALFACTS, a spectro-polarimetric continuum survey of the whole Arecibo sky, provides the most sensitive imaging to date of polarized radiation over almost one third of the celestial sphere, while the high-spectra resolution, full-Stokes cubes enable Faraday rotation synthesis to be applied to both diffuse emission and a high-density grid of discrete compact sources. GALFACTS is a ma jor observational advance in imaging the polarized radiation from both the Milky Way and the extragalactic universe for exploration of the origin and evolution of cosmic magnetism. It provides a rich new database for exploration of the magnetic field of the Galaxy, the properties of the magneto-ionic medium, the polarization properties of a vast number of extragalactic sources, and of intergalactic fields. Outreach Abstract: The ALFA multi-beam receiver system allows the largest aperture telescope in the world to be used for imaging the structure of the polarization of cosmic radio waves. Radio polarization is a unique and powerful probe of magnetic fields in the cosmos. Magnetic fields are ubiquitous in the present day Universe. One of the central questions of modern astrophysics is where do the magnetic fields that thread galaxies come from, and how does their growth and presence change the manner in which the matter in the universe evolves to form stars, planets and life. The GALFACTS pro ject brings together a large global community of researchers to use the Arecibo telescope to build a picture of the polarized sky and in the data seek answers to the questions of the origin, evolution and influence of cosmic magnetic fields.

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Name Andrew R Taylor Chris J Salter

Institution University of Calgary NAIC, Arecibo Observatory

E-mail russ@ras.ucalgary.ca

Phone 403-220-5416 7870878-2612 ext 281

Student

Additional Authors
M. Andrecut (mircea,andrecut@gmail.com) S. Baci - undergraduate student (sonia.baci@student.manchester.ac.uk) J. Brown (jocat@ras.ucalgary.ca) A. Despande (desh@rri.res.in) M. Davis (mdavis@seti.org) K. Douglas (kevindouglasphd@gmail.com) J. Farnes - graduate student (j.farnes@mrao.cam.ac.uk) D. Farnsworth - graduate student (farnsworth@astro.unm.edu) P. Federl (federl@gmail.com) T. Foster (fostert@brandonu.ca) B. Gaensler (bryan.gaensler@sydney.edu.au) J. Geisbuesch (Joern.Geisbuesch@nrc-cnrc.gc.ca) S. George (sgeorge@mrao.cam.ac.uk N. Gheissar - graduate student (niloofar@physics.usyd.edu.au) T. Ghosh (tghosh@naic.edu) S. Gibson (steven.gibson@wku.edu) S. Guram -graduate student (ssguram@ucalgary.ca) J. Han (hjl@nao.cas.cn) L. Harvey-Smith (lisa.harvey-smith@csiro.au) M. Haverkorn (m.haverkorn@astro.ru.nl) T. Jaffe (tess.jaffe@cesr.fr) 18 additional collaborators missing due to lack of space on web form, including 2 graduate and 1 undergrad student.

This work is part of both a PhD and a MS 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 required.

Begin ­ End Interval­Interval 06:50 ­ 13:10 04:50 ­ 06:50 00:00 ­ 06:20 06:00 ­ 12:20 2

Days Needed at This Interval 30 11 6 6


Time Constraints (Must Be Justified in the Prop osal Text) observations at night time for high precision polarimetry

Next Semester Time Request

Begin ­ End Interval­Interval 12:00 ­ 18:20 18:00 ­ 00:20 13:00 ­ 13:45 ­

Days Needed at This Interval 6 6 11

Time Constraints (Must Be Justified in the Prop osal Text) night time observing

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

Sp ecial Equipment or setup:

none

Section IV - RFI Considerations Frequency Ranges Planned
1225 - 1525 This proposal requires Iridium RFI protection at 1612 MHz between 10pm and 6am EST. This proposal requires coordination with Punta Salinas radar within the band 1222-1381 MHz.. This proposal requires coordination with GPS L3 at 1381 MHz.

Section V - Observing List Target List
GALFACTS survey region N1 Zenith strip Z1 Zenith strip Z2 Zenith strip Z3 Zenith strip Z4 calibration sources 3C286

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