SIMBAD references

2019MNRAS.484L.104P - Mon. Not. R. Astron. Soc., 484, L104-L108 (2019/March-3)

TXS 0506+056, the first cosmic neutrino source, is not a BL Lac.

PADOVANI P., OIKONOMOU F., PETROPOULOU M., GIOMMI P. and RESCONI E.

Abstract (from CDS):

We present evidence that TXS 0506+056, the first plausible non-stellar neutrino source, despite appearances, is not a blazar of the BL Lac type but is instead a masquerading BL Lac, i.e. intrinsically a flat-spectrum radio quasar with hidden broad lines and a standard accretion disc. This reclassification is based on: (1) its radio and O II luminosities; (2) its emission line ratios; (3) its Eddington ratio. We also point out that the synchrotron peak frequency of TXS 0506+056 is more than two orders of magnitude larger than expected by the so-called 'blazar sequence', a scenario which has been assumed by some theoretical models predicting neutrino (and cosmic ray) emission from blazars. Finally, we comment on the theoretical implications this reclassification has on the location of the γ-ray emitting region and our understanding of neutrino emission in blazars.

Abstract Copyright: © 2019 The Author(s) Published by Oxford University Press on behalf of the Royal Astronomical Society

Journal keyword(s): neutrinos - radiation mechanisms: non-thermal - galaxies: active - BL Lacertae objects: general - gamma-rays: galaxies

Simbad objects: 1

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2021.02.26-08:54:06

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