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Proposal Identification No.:

A3020

Date Received:

2015-Sep-01 12:53:12

Technical Page
This proposal has not been submitted before. Proposal Type: General Category: Observation Category: Total Time Requested: Minimum Useful Time: Regular Astronomy 61.5 Hours 2.5 hours

Prop osal Title: AN UPDATED PROPOSAL TO MEASURE MAGNETIZED ELECTRON DENSITY FLUCTUATIONS IN MIRA-VARIABLE-STAR CORONAE ABSTRACT:
We have recently realized a technique for measuring electron density fluctuations in the Sun's corona and found many interesting results, including: periodic fluctuations in electron column density; Coronal Mass Ejection (CME) magnetized electron clouds; turbulent spectra; power transfer from circular to linear polarization. The technique uses the propagation effects on a spacecraft downlink carrier. The goal of this proposal is to explore propagation effects in the coronae of Mira variable stars, using the OH maser lines on the far side of the star (i.e., the positive-velocity masers) as the signal. This is completely unexplored territory in stars. If we are successful, we may open up a new observational field--the exploration and characterization of physical conditions and activity in stellar coronae.

Name carl Heiles

Institution Univ of Calif Berkeley

E-mail heiles@astro.berkeley.edu

Phone 510 280 8099

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: Mock spectrometers 1


RFI Considerations Frequency Ranges Planned
1612 1665 1667 1720 This proposal requires Iridium RFI protection at 1612 MHz between 10pm and 6am EST.

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