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arXiv · 1109.1984

Multiwavelength spectroscopy of PSR B0656+14

Martin Durant·Oleg Kargaltsev·George G. Pavlov
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Abstract

Using high-quality Hubble Space Telescope observations, we construct the near infra-red (NIR) to far ultra-violet (FUV) spectral energy distribution (SED) of PSR B0656+14. The SED is non-monotonic. Fitting it with a simple combination of a Rayleigh-Jeans spectrum (UV) and non-thermal power-law (optical/NIR) leaves significant residuals, strongly hinting at one or more spectral features. We consider various models (combination of continuum components, and absorption/emission lines) with possible interpretations, and place them in the context of the broader spectral energy distribution. Surprisingly, the extrapolation of the best-fit X-ray spectral model roughly match the NIR-FUV data, and the power-law component is also consistent with the gamma-ray fluxes. We compare the multiwavelength SED of B0656+14 with those of other optical, X-ray and gamma-ray detected pulsars, and notice that a simple power-law spectrum crudely accounts for most of the non-thermal emission.

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Martin Durant, Oleg Kargaltsev, George G. Pavlov. 2011-09-09. Multiwavelength spectroscopy of PSR B0656+14. https://doi.org/10.1088/0004-637x/743/1/38

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