Chandra detection of the radio and optical double hot spot of 3C 351

Details Chandra detection of the radio and optical double hot spot of 3C 351 Chandra detection of the radio and optical double hot spot of 3C 351

2001-10-09

arxiv.org/abs/astro-ph/0110227v1

Astronomy and Astrophysics

Astrophysics

16 pag. + 2 .PS figures (fig.2 color), ApJ Letter in press

Scientific paper

10.1086/324764

In this letter we report a Chandra X-ray detection of the double northern hot spot of the radio quasar 3C 351. The hot spot has also been observed in the optical with the Hubble Space Telescope (R-band) and with the 3.5m. Telescopio Nazionale Galileo (B-band). The radio-to-optical and X-ray spectra are interpreted as the results of the synchrotron and synchrotron-self-Compton (SSC) mechanisms, respectively, with hot-spot magnetic field strengths ~3 times smaller than the equipartition values. In the framework of shock acceleration theory, we show that the requirement for such a relatively small field strength is in agreement with the fitted synchrotron spectral models and with the sizes of the hot spots. Finally, we show that the combination of a lower magnetic field strength with the high frequencies of the synchrotron cut-off in the fitted synchrotron spectra provides strong evidence for electron acceleration in the hot spots.

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