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arXiv · 1807.07462

Mid-infrared variability of the neutrino source blazar TXS 0506$+$056

K. É. Gabányi·A. Moór·S. Frey
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Abstract

The IceCube instrument detected a high-energy cosmic neutrino event on 2017 September 22 (IceCube_170922A, IceCube Collaboration 2018), which the electromagnetic follow-up campaigns associated with the flaring $\gamma$-ray blazar TXS 0506$+$056 (e.g., Padovani et al., 2018). We investigated the mid-infrared variability of the source by using the available single exposure data of the WISE satellite at $3.4$ and $4.6\mu$m. TXS 0506$+$056 experienced a $\sim 30$% brightening in both of these bands a few days prior to the neutrino event. Additional intraday infrared variability can be detected in 2010. Similar behaviour seen previously in $\gamma$-ray bright radio-loud AGN has been explained by their jet emission (e.g., Jiang et al. 2012).

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K. É. Gabányi, A. Moór, S. Frey. 2018-07-19. Mid-infrared variability of the neutrino source blazar TXS 0506$+$056. https://doi.org/10.3847/2515-5172%2Faad49f

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