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Multicolor Photometry of the Vela Pulsar

R. P. Mignani·P. A. Caraveo
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Abstract

Multicolor photometry of the Vela pulsar (PSR B0833-45), updated by recent HST/WFPC2 observations obtained in the 555W, 675W and 814W filters, is presented. The available data provide the best characterization so far of the pulsar spectral shape, which is dominated by a flat power law continuum with spectral index α= -0.2 +/- 0.2, consistent with the extrapolation in the optical domain of the power law component of the X-ray spectrum detected by Chandra. In addition, a marginally significant dip (~ 3 sigma) seems to be present at about 6500 AA. Spectroscopic observations with the VLT, now in progress, will undoubtly provide a much better assessment of the reality and characteristics of this feature.

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R. P. Mignani, P. A. Caraveo. 2001-07-02. Multicolor Photometry of the Vela Pulsar. https://doi.org/10.1051/0004-6361%3A20010951

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