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J1026+2542: Proper motion in a blazar jet at z=5.27

S. Frey ; Z. Paragi ; Judit Fogasy (Institutionen för rymd- och geovetenskap, Onsala rymdobservatorium) ; L. I. Gurvits
Proceedings of Science. 12th European VLBI Network Symposium and Users Meeting, EVN 2014 ; Cagliari; Italy; 7-10 October 2014 (18248039). Vol. Part F113821 (2014),
[Konferensbidrag, övrigt]

The radio-loud AGN J1026+2542 has recently been classified as the second most distant blazar, based on its broad-band spectral energy distribution and X-ray spectrum. The source with a prominent one-sided jet extending to at least ∼20 mas was earlier observed with the VLBA at 5 GHz in January 2006. With our new EVN observation (May 2013), we detected the displacement and directly measured the apparent proper motion of the jet components, for the first time at such a high redshift. The 1.6-GHz EVN observation provided additional information on the extent and the spectral properties of the jet. The VLBI results are consistent with the picture in which J1026+2542 has its jet oriented close to the line of sight, with significant Doppler boosting and a large bulk Lorentz factor. © Copyright owned by the author(s) under the terms of the Creative Commons Attribution-NonCommercial-ShareAlike Licence.



Denna post skapades 2017-05-17. Senast ändrad 2017-06-09.
CPL Pubid: 249380

 

Institutioner (Chalmers)

Institutionen för rymd- och geovetenskap, Onsala rymdobservatorium (2010-2017)

Ämnesområden

Atom- och molekylfysik och optik

Chalmers infrastruktur