Документ взят из кэша поисковой машины. Адрес оригинального документа : http://www.naic.edu/vscience/schedule/tpfiles/RobishawtagA2764tp.pdf Дата изменения: Thu Sep 20 00:05:58 2012 Дата индексирования: Mon Feb 4 23:36:06 2013 Кодировка: Поисковые слова: molecular cloud

Proposal Identification No.:

A2764

Date Received:

2012-Sep-04 03:21:19

Technical Page
Proposal Type: General Category: Sub-Category: Observation Category: Total Time Requested: Minimum Useful Time: Prop osal Title: ABSTRACT: Regular Astronomy Spectroscopy Galactic 80 Hours 00:30

HINSA: A Promising New Tool for Probing Magnetic Fields in the CNM

The magnetic field is one of the most important parameters affecting molecular clouds and star formation. Unfortunately, however, its measurement in molecular clouds remains an exceedingly difficult task, particularly in dark clouds. Multiple methods have been used to estimate the magnetic field in the Taurus molecular cloud complex and each returns a field of strength 5 to 10 microgauss. But none of these methods is as direct as the Zeeman effect. We propose to use a new tool for probing magnetic fields in molecular clouds: HI Narrow Self-Absorption (HINSA). We choose 4 positions in 2 dark clouds in Taurus and request 80 hours of Arecibo time to detect Zeeman splitting in deep HINSA features down to a limiting magnetic field strength of 0.6 microgauss.

Name Timothy Robishaw

Institution Dominion Radio Astrophysical Observatory

E-mail tim.robishaw@nrc-cnrc.gc.ca

Phone +1 250 4972350

Student no

Remote Observing Request

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

Instrument Setup
L-wide Atmospheric Observation Instruments:

Sp ecial Equipment or setup:

none

RFI Considerations
1


Frequency Ranges Planned
1610-1720

2