NOAO >   Observing Info >   Approved Programs >   2016A-0281

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Program Information for 2016A-0281


PI: George Pavlov, Pennsylvania State U., pavlov@astro.psu.edu
Address: Department of Astronomy and Astrophysics, 525 Davey Lab., University Park, PA, 16802 USA

CoI: Yury Shibanov, Ioffe Institute
CoI: Andrey Danilenko, Ioffe Institute
CoI: Dima Zyuzin, Ioffe Institute

Title: Confirming the nature of the knot near pulsar B1951+32

Abstract: The middle-aged, energetic and fast moving radio and gamma-ray pulsar PSR B1951+32 is associated with supernova remnant CTB 80. It powers a complex bow-shock pulsar wind nebula detected in the radio, H-alpha and X-rays. A puzzling optical knot was detected about 0.5 arcsecond from the pulsar in the optical and near-IR. It is reminiscent of the unique "inner optical knot" located 0.6 arcsecond from the Crab pulsar. Still there is no evidence that B1951+32 knot is indeed associated with the pulsar. We propose near-IR Ks AO and simultaneous optical gr imaging of PSR B1951+32 to firmly establish the association of the detected optical knot with the pulsar by measuring its proper motion using the proposed AO and archival HST 1997 observations. The optical data together with archival data will be used to confirm the powerlaw spectrum of the knot and to search for its presumed temporal variability expected by the analogy with the Crab knot. We also expect to detect the pulsar itself in Ks, which will make it only the fourth pulsar ever detected in this band. All this will have a strong impact on the models of relativistic winds and pulsar emission mechanisms.

Program Type: Standard/Galactic

Scheduled Nights:
Run 1 (2016A):  GEM-NQ/GMOSN -- 2.2hrs band 2 (GN-2016A-Q-46)


National Optical Astronomy Observatory, 950 North Cherry Avenue, P.O. Box 26732, Tucson, Arizona 85726, Phone: (520) 318-8000, Fax: (520) 318-8360



NOAO >   Observing Info >   Approved Programs >   2016A-0281

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