2021
DOI: 10.1093/mnras/stab3022
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The relativistic parsec-scale jets of the blazars TXS 0506+056 and PKS 0502+049 and their possible association with gamma-ray flares and neutrino production

Abstract: The physical nature of the mechanism responsible for the emission of neutrinos in active galactic nuclei (AGNs) has been matter of debate in the literature, with relativistic jets of radio-loud AGNs as possible candidates to be the sources of high-energy neutrinos. The most prominent candidate so far is the blazar TXS 0506+056, which is found to be associated with the neutrino event IceCube-170922A. Furthermore, the IceCube reported an excess of neutrinos towards TXS 0506+056 between September 2014 and March 2… Show more

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Cited by 4 publications
(3 citation statements)
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“…2). [49] thus argue that IceCube- 170922A and the 2014 -15 neutrino flare might actually originate from two different blazars. However, it seems that the decomposition of the VLBI images into individual components as well as the identification of components across epochs appears very difficult in the case of these blazars, and superluminal-motion speeds up to > ∼ 60 c have been found for both sources, which should be taken with great caution.…”
Section: Icecube-170922a and Txs 0506+056 (And Pks 0502+049?)mentioning
confidence: 93%
See 1 more Smart Citation
“…2). [49] thus argue that IceCube- 170922A and the 2014 -15 neutrino flare might actually originate from two different blazars. However, it seems that the decomposition of the VLBI images into individual components as well as the identification of components across epochs appears very difficult in the case of these blazars, and superluminal-motion speeds up to > ∼ 60 c have been found for both sources, which should be taken with great caution.…”
Section: Icecube-170922a and Txs 0506+056 (And Pks 0502+049?)mentioning
confidence: 93%
“…A very recent finding and suggestion that has so far received little attention in the literature is based on a detailed re-analysis of the pc-scale jet structures using archival 8 and 15 GHz very-long-baseline interferometry data, not only of TXS 0506+056, but also of another nearby γ-ray blazar, namely PKS 0502+049 [49]. Estimating the ejection times of 12 and 7 jet components in TXS 0506+056 and PKS 0502+049, respectively, they find that the arrival time of IceCube-170922A coincides with the estimated ejection times of two components in the jet of TXS 0506+056, while no such coincidence was found for the 2014 -15 neutrino flare.…”
Section: Icecube-170922a and Txs 0506+056 (And Pks 0502+049?)mentioning
confidence: 99%
“…214,215 However, the interpretation is still under debate because the radio data are also consistent with a structured jet. [216][217][218] Note that the cascade constraint is applied anyway whether TXS 0506+056 is an atypical blazar or not.…”
Section: Txs 0506+056 and Other Blazar Coincidencesmentioning
confidence: 99%