Time-Lapse Imaging of Algol's Radio Magnetosphere


We propose mapping the radio corona of the active stellar binary Algol at 6 epochs (3 at secondary eclipse, 3 at quadrature) using the HSA at 15 GHz. By generating synthetic uv datasets and maps, we demonstrate that the HSA is capable of mapping coronal structures with unprecedented dynamic range and angular resolution. The significantly enhanced sensitivity and angular resolution of this array will allow us to address several outstanding scientific questions for the first time, including whether the currently proposed coronal polar model is valid. By observing at quadrature (maximum separation), we will test the recent suggestion that radio flares arise from a B-star accretion disk. We will also combine a 'snapshot' mode using secondary eclipse to probe the location and time evolution of radio structure in a 2-3 hour timescale.

Name Other * Institution Email Phone
Bob Mutel PI University of Iowa 319 335-1950
Manuel Guedel Paul Scherrer Institute +41-1-632-7129
William Peterson T
* PI = Principal Investigator; CO = Contact author; T = Thesis observations; S = Student

Front Ends
Gregorian Ku U(12.4 to 15.4 GHz)

Back Ends
Mark 5 recorder (disks)

Type of Observing
Monitor Very Long Baseline Interferometry

Switching Type

Processor (correlator)

Allotted time 72.00 hours

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Updated 09/19/2007