The HST survey of the B2 sample of radio galaxies: detection of two optical jets

Details The HST survey of the B2 sample of radio galaxies: detection of two optical jets The HST survey of the B2 sample of radio galaxies: detection of two optical jets

2002-10-21

arxiv.org/abs/astro-ph/0210461v1

Astron.Astrophys. 397 (2003) 127-132

Astronomy and Astrophysics

Astrophysics

Accepted for publication in A&A, 6 pages, 4 figures

Scientific paper

10.1051/0004-6361:20021476

We present HST observations of previously undetected optical jets in the low-luminosity radio galaxies B2 0755+37 and B2 1553+24. We show that there is accurate spatial coincidence between optical and radio emission, implying that the former is likely to be synchrotron radiation. The physical properties of the jets are similar to those known previously: their radio-optical spectral indices are ~0.7 and in B2 0755+37, the spectrum steepens between optical and X-ray wavelengths. Our results support the hypothesis that optical emission is detectable from jets orientated within ~20 degrees of the line of sight for the B2 sample.

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