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PSR B1951+32 and PSR J0537-6910 - where are the optical counterparts? | | R. F. Butler
; A. Golden
; A. Shearer
; C. Gouiffes
; | | Date: |
29 Aug 2002 | | Subject: | astro-ph | | Affiliation: | National University of Ireland, Galway), A. Golden (National University of Ireland, Galway), A. Shearer (National University of Ireland, Galway), C. Gouiffes (CEA/Saclay, France | | Abstract: | 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 m_V ~ 24. Hester (2000) 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 m_V ~ 25.5, and another optical counterpart candidate nearby at m_V ~ 24.2. PSR J0537-6910 is a young (canonical age ~ 5000 years), 16ms pulsar in the LMC. We report a search for optical pulsations from the region around the X-ray position. We see no obvious candidate exhibiting optical pulsations at the X-ray period, with a 3 sigma upper limit of m_V ~ 23.6. We have also examined recent Chandra results (Wang et al. 2001) and show that their X-ray-Optical astrometry is in error by about 7’’. | | Source: | arXiv, astro-ph/0208534 | | Services: | Forum | Review | PDF | Favorites | |
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