The Relation Between Radio Polarization and Gamma-Ray Emission in AGN Jets

Talvikki Hovatta; Matthew L. Lister; Yuri Y. Kovalev; Alexander B. Pushkarev; Tuomas Savolainen

doi:10.1142/S0218271810016683

The Relation Between Radio Polarization and Gamma-Ray Emission in AGN Jets

Talvikki Hovatta, Matthew L. Lister, Yuri Y. Kovalev, Alexander B. Pushkarev, Tuomas Savolainen

Research output: Contribution to journal › Article › Scientific › peer-review

Abstract

We have compared the parsec-scale jet linear polarization properties of the Fermi LAT-detected and non-detected sources in the complete flux-density-limited (MOJAVE-1) sample of highly beamed AGN. Of the 123 MOJAVE sources, 30 were detected by the LAT during its first three months of operation. We find that during the era since the launch of Fermi, the unresolved core components of the LAT-detected jets have significantly higher median fractional polarization at 15 GHz. This complements our previous findings that these LAT sources have higher apparent jet speeds, brightness temperatures and Doppler factors, and are preferentially found in higher activity states.

Original language	English
Pages (from-to)	943-948
Number of pages	6
Journal	International Journal of Modern Physics D
Volume	19
Issue number	06
DOIs	https://doi.org/10.1142/S0218271810016683
Publication status	Published - 2010
MoE publication type	A1 Journal article-refereed

Keywords

Active galaxies
jets
quasars

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10.1142/S0218271810016683

http://adsabs.harvard.edu/abs/2010IJMPD..19..943H

Cite this

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title = "The Relation Between Radio Polarization and Gamma-Ray Emission in AGN Jets",

abstract = "We have compared the parsec-scale jet linear polarization properties of the Fermi LAT-detected and non-detected sources in the complete flux-density-limited (MOJAVE-1) sample of highly beamed AGN. Of the 123 MOJAVE sources, 30 were detected by the LAT during its first three months of operation. We find that during the era since the launch of Fermi, the unresolved core components of the LAT-detected jets have significantly higher median fractional polarization at 15 GHz. This complements our previous findings that these LAT sources have higher apparent jet speeds, brightness temperatures and Doppler factors, and are preferentially found in higher activity states.",

keywords = "Active galaxies, jets, quasars",

author = "Talvikki Hovatta and Lister, {Matthew L.} and Kovalev, {Yuri Y.} and Pushkarev, {Alexander B.} and Tuomas Savolainen",

year = "2010",

doi = "10.1142/S0218271810016683",

language = "English",

volume = "19",

pages = "943--948",

journal = "International Journal of Modern Physics D",

issn = "0218-2718",

publisher = "World Scientific",

number = "06",

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TY - JOUR

T1 - The Relation Between Radio Polarization and Gamma-Ray Emission in AGN Jets

AU - Hovatta, Talvikki

AU - Lister, Matthew L.

AU - Kovalev, Yuri Y.

AU - Pushkarev, Alexander B.

AU - Savolainen, Tuomas

PY - 2010

Y1 - 2010

N2 - We have compared the parsec-scale jet linear polarization properties of the Fermi LAT-detected and non-detected sources in the complete flux-density-limited (MOJAVE-1) sample of highly beamed AGN. Of the 123 MOJAVE sources, 30 were detected by the LAT during its first three months of operation. We find that during the era since the launch of Fermi, the unresolved core components of the LAT-detected jets have significantly higher median fractional polarization at 15 GHz. This complements our previous findings that these LAT sources have higher apparent jet speeds, brightness temperatures and Doppler factors, and are preferentially found in higher activity states.

AB - We have compared the parsec-scale jet linear polarization properties of the Fermi LAT-detected and non-detected sources in the complete flux-density-limited (MOJAVE-1) sample of highly beamed AGN. Of the 123 MOJAVE sources, 30 were detected by the LAT during its first three months of operation. We find that during the era since the launch of Fermi, the unresolved core components of the LAT-detected jets have significantly higher median fractional polarization at 15 GHz. This complements our previous findings that these LAT sources have higher apparent jet speeds, brightness temperatures and Doppler factors, and are preferentially found in higher activity states.

KW - Active galaxies

KW - jets

KW - quasars

U2 - 10.1142/S0218271810016683

DO - 10.1142/S0218271810016683

M3 - Article

SN - 0218-2718

VL - 19

SP - 943

EP - 948

JO - International Journal of Modern Physics D

JF - International Journal of Modern Physics D

IS - 06

ER -

The Relation Between Radio Polarization and Gamma-Ray Emission in AGN Jets

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Keywords

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