Multicolor photometry of the vela pulsar - INSPIRE

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Multicolor photometry of the vela pulsar

Jul, 2001

4 pages

Published in:

Astron.Astrophys. 376 (2001) 213-216

e-Print:

astro-ph/0107027 [astro-ph]

DOI:

10.1051/0004-6361:20010951

View in:

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Abstract: (arXiv)

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 \alpha = -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.

References(10)

Figures(0)

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