NOAO >   Observing Info >   Approved Programs >   2017B-0333

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Program Information for 2017B-0333


PI: Timothy Dolch, Hillsdale College, tdolch@hillsdale.edu
Address: Physics Department, 33 E. College St., Hillsdale, MI 49242

CoI: James M Cordes, Cornell U.
CoI: Shami Chatterjee, Cornell U.
CoI: T Joseph W Lazio, CalTech-JPL
CoI: Schuyler Van Dyk, NASA Herschel Science Center
CoI: Laura Salo, Hillsdale College
CoI: Christos Giannakopoulos, Hillsdale College

Title: An KPNO H(alpha) Search for Radio Pulsar Bow-Shock Nebula

Abstract: (Note: this is a proposed continuation of accepted proposal 2017A- 0411, which was awarded 2 nights in July 2017. These additional targets continue the bow-shock survey with pulsars at other LSTs.) We propose a search for new H-alpha bow-shock pulsar wind nebulae (PWN) around known radio pulsars. While PWN produce flux from radio to gamma rays, only nine H-alpha bow-shock nebulae are currently known. The H-alpha emission probes the density fluctuation spectrum of the surrounding neutral hydrogen immediately preceding ionization, which can in turn characterize the environments of radio pulsars. For example, the Guitar Nebula produced by pulsar B2224+65 has constrained the Galaxy’s turbulent fluctuation spectrum at the smallest spatial scales. We target ten radio pulsars that have not to date been imaged in H-alpha for bow-shock nebulae. The targets are a mix of young, canonical pulsars with strong pulsar winds, and old, millisecond pulsars (MSP). The MSPs are selected from the North American Nanohertz Observatory for Gravitational Waves (NANOGrav) pulsar timing array, for which any detected nebulae can help characterize lines-of-sight, and aid the effort for gravitational wave detection with pulsars.

Program Type: Standard/Galactic

Scheduled Nights:
Run 1 (2017B):  KP-4m/MOSA3 -- 2n on Oct 25 - Oct 26 2017


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 >   2017B-0333

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