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Proposal Identification No.:

P2976

Date Received:

2015-Feb-25 10:47:58

Technical Page
This proposal has not been submitted before. Proposal Type: General Category: Observation Category: Total Time Requested: Minimum Useful Time: Prop osal Title: ABSTRACT: Director Discretionary Time Pulsars Galactic 10 Hours 45 minutes

Searching for Pulsed Radio Emission from the Magnetar SGR 1935+2154

Magnetars are rare neutron stars with extremely high magnetic fields, which display X-/gamma-ray outbursts frequently but irregularly. Few magnetars have shown radio pulsations, but they turn out to be intermittent and different in their properties compared with regular radio pulsar emission. We request Director Discretionary Time to search for pulsed radio emission from the magnetar SGR 1935+2154, which was discovered in July 2014 and recently became burst active again in X-/gamma-rays. With a detection we would be able to establish the spin down rate and the magnetic field strength, and compare the radio and X-ray timing properties of the source. This would provide a rare set of observations to address the nature of pulsed magnetar radio emission, allow a better study of the putative evolutionary link between magnetars and radio pulsars, and enable a better understanding of the neutron star population as a whole.

Name Alexander J. van der Horst

Institution George Washington University

E-mail a jvanderhorst@gwu.edu

Phone +1-202-2909493

Student no

Remote Observing Request

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

Instrument Setup
L-wide C

Atmospheric Observation Instruments:

1


Sp ecial Equipment or setup:

none

RFI Considerations Frequency Ranges Planned
1200 - 1700 4500 - 5500

2