High-resolution polarization imaging of the fermi blazar 3C 279

Standard

High-resolution polarization imaging of the fermi blazar 3C 279. / Fermi-LAT Collaboration.

In: Proceedings of Science, Vol. 2017-October, 2017.

Research output: Contribution to journal › Conference article › peer-review

Author

Fermi-LAT Collaboration. / High-resolution polarization imaging of the fermi blazar 3C 279. In: Proceedings of Science. 2017 ; Vol. 2017-October.

BibTeX

@article{2c5019aec4f04b5381b0c3ddb0b98258,

title = "High-resolution polarization imaging of the fermi blazar 3C 279",

abstract = "Ever since the discovery by the Fermi mission that active galactic nuclei (AGN) produce copious amounts of high-energy emission, its origin has remained elusive. Using high-frequency radio interferometry (VLBI) polarization imaging, we could probe the magnetic field topology of the compact high-energy emission regions in blazars. A case study for the blazar 3C 279 reveals the presence of multiple ?-ray emission regions. Pass 8 Fermi-Large Area Telescope (LAT) data are used to investigate the flux variations in the GeV regime; six ?-ray flares were observed in the source during November 2013 to August 2014. We use the 43 GHz VLBI data to study the morphological changes in the jet. Ejection of a new component (NC2) during the first three ?-ray flares suggests the VLBI core as the possible site of the high-energy emission. A delay between the last three flares and the ejection of a new component (NC3) indicates that high-energy emission in this case is located upstream of the 43 GHz core (closer to the black hole).",

author = "{Fermi-LAT Collaboration} and B. Rani and Jorstad, {S. G.} and Marscher, {A. P.}",

note = "Publisher Copyright: {\textcopyright} Copyright owned by the author(s).; 7th International Fermi Symposium, IFS 2017 ; Conference date: 15-10-2017 Through 20-10-2017",

year = "2017",

doi = "10.22323/1.312.0020",

language = "English",

volume = "2017-October",

journal = "Proceedings of Science",

issn = "1824-8039",

publisher = "Sissa Medialab Srl",

}

RIS

TY - JOUR

T1 - High-resolution polarization imaging of the fermi blazar 3C 279

AU - Fermi-LAT Collaboration

AU - Rani, B.

AU - Jorstad, S. G.

AU - Marscher, A. P.

N1 - Publisher Copyright: © Copyright owned by the author(s).

PY - 2017

Y1 - 2017

N2 - Ever since the discovery by the Fermi mission that active galactic nuclei (AGN) produce copious amounts of high-energy emission, its origin has remained elusive. Using high-frequency radio interferometry (VLBI) polarization imaging, we could probe the magnetic field topology of the compact high-energy emission regions in blazars. A case study for the blazar 3C 279 reveals the presence of multiple ?-ray emission regions. Pass 8 Fermi-Large Area Telescope (LAT) data are used to investigate the flux variations in the GeV regime; six ?-ray flares were observed in the source during November 2013 to August 2014. We use the 43 GHz VLBI data to study the morphological changes in the jet. Ejection of a new component (NC2) during the first three ?-ray flares suggests the VLBI core as the possible site of the high-energy emission. A delay between the last three flares and the ejection of a new component (NC3) indicates that high-energy emission in this case is located upstream of the 43 GHz core (closer to the black hole).

AB - Ever since the discovery by the Fermi mission that active galactic nuclei (AGN) produce copious amounts of high-energy emission, its origin has remained elusive. Using high-frequency radio interferometry (VLBI) polarization imaging, we could probe the magnetic field topology of the compact high-energy emission regions in blazars. A case study for the blazar 3C 279 reveals the presence of multiple ?-ray emission regions. Pass 8 Fermi-Large Area Telescope (LAT) data are used to investigate the flux variations in the GeV regime; six ?-ray flares were observed in the source during November 2013 to August 2014. We use the 43 GHz VLBI data to study the morphological changes in the jet. Ejection of a new component (NC2) during the first three ?-ray flares suggests the VLBI core as the possible site of the high-energy emission. A delay between the last three flares and the ejection of a new component (NC3) indicates that high-energy emission in this case is located upstream of the 43 GHz core (closer to the black hole).

UR - http://www.scopus.com/inward/record.url?scp=85041031419&partnerID=8YFLogxK

U2 - 10.22323/1.312.0020

DO - 10.22323/1.312.0020

M3 - Conference article

AN - SCOPUS:85041031419

VL - 2017-October

JO - Proceedings of Science

JF - Proceedings of Science

SN - 1824-8039

T2 - 7th International Fermi Symposium, IFS 2017

Y2 - 15 October 2017 through 20 October 2017

ER -

ID: 88430329