Detection of new Optical Counterpart candidates to PSR B1951+32 with HST/WFPC2

Details Detection of new Optical Counterpart candidates to PSR B1951+32 with HST/WFPC2 Detection of new Optical Counterpart candidates to PSR B1951+32 with HST/WFPC2

2002-07-23

arxiv.org/abs/astro-ph/0207502v1

Astron.Astrophys. 395 (2002) 845-852

Astronomy and Astrophysics

Astrophysics

7 pages, 5 figures, Accepted for publication in Astronomy & Astrophysics

Scientific paper

10.1051/0004-6361:20021013

There remain several definitive gamma-ray pulsars that are as yet undetected in the optical regime. A classic case is the pulsar PSR B1951+32, associated with the complex CTB 80 SNR. Previous ground based high speed 2-d optical studies have ruled out candidates to V ~ 24. Hester (2000a) has reported an analysis of archival HST/WFPC2 observations of the CTB 80 complex which suggest a compact synchrotron nebula coincident with the pulsar's radio position. Performing a similar analysis, we have identified a possible optical counterpart within this synchrotron nebula at V ~ 25.5 - 26, and another optical counterpart candidate nearby at V ~ 24.5. We assess the reality of these counterpart candidates in the context of existing models of pulsar emission.

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