2001/07/02 by R. P. Mignani, R. Mignani, P. A. Caraveo · 1 citation
Earth and Planetary Sciences · Physics and Astronomy · #Astrophysical Phenomena and Observations #High-pressure geophysics and materials #Pulsars and Gravitational Waves Research #astro-ph
paper · pdf · doi:10.1051/0004-6361:20010951
published as Astron.Astrophys. 376 (2001) 213-216 · 4 pages, LaTex, 2 Postscript figures. Astronomy & Astrophysics, accepted
arxiv created 2001/07/02 · openalex publication_date 2001/09/01 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/01
Multicolor photometry of the Vela pulsar (PSR B0833-45), updated by recent HST/WFPC2 observations obtained in the , and 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 , 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 (≈3σ) seems to be present at about 6500 Å. Spectroscopic observations with the VLT, now in progress, will undoubtly provide a much better assessment of the reality and characteristics of this feature.