Photometric study of fields of nearby pulsars with the 6m telescope
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Fields of Geminga, PSR B0950+08, PSR J1908+0734 and PSR J0108-1431 have been observed within the program of optical investigation of nearby neutron stars carried out with the 6m telescope. Our multicolour BVR_cI_c photometry has yielded the following magnitudes of Geminga: V=25.3+/-0.4; R_c=25.4+/-0.3. The estimates of the 3σupper limits in the B and I_c bands are 25.4 and 24.9, respectively. This is in agreement with previous observations of Geminga. We have suggested candidate for optical counterpart of PSR B0950+08, with R_c=25.4+/-0.3. When compared to the HST data obtained in UV its flux shows that this old pulsar can be brighter in near-IR than in near-UV. We have obtained for the first time images of the fields of PSR J1908+0734 and PSR J0108-1431. Although no optical counterparts have been detected, the magnutude upper limits obtained suggest further observations of these pulsars.
10 pages, 6 figures, to be published in Bulletin of the Special Astrophysicl Observatory, v.49; figures of higher resolution available at ftp://serv.sao.ru/pub2/grb/psr
10 pages, 6 figures, to be published in Bulletin of the Special Astrophysicl Observatory, v.49; figures of higher resolution available at ftp://serv.sao.ru/pub2/grb/psr