NASA/IPAC EXTRAGALACTIC DATABASE
Date and Time of the Query: 2019-08-22 T12:05:02 PDT
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For refcode 2018MNRAS.478..399B:
Retrieve 26 NED objects in this reference.
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NED Abstract

Copyright by Royal Astronomical Society. 2018MNRAS.478..399B The mm-wave compact component of an AGN Behar, Ehud; Vogel, Stuart; Baldi, Ranieri D.; Smith, Krista L.; Mushotzky, Richard F. Abstract. mm-wave emission from active galactic nuclei (AGNs) may hold the key to understanding the physical origin of their radio cores. The correlation between radio/mm and X-ray luminosity may suggest a similar physical origin of the two sources. Since synchrotron self-absorption decreases with frequency, mm-waves probe smaller length-scales than cm-waves. We report on 100 GHz (3 mm) observations with the Combined Array for Research in Millimeter-wave Astronomy of 26 AGNs selected from the hard X-ray Swift/Burst Alert Telescope survey. 20/26 targets were detected at 100 GHz down to the 1 mJy (3sigma) sensitivity, which corresponds to optically thick synchrotron source sizes of 10^-4^-10^-3^ pc. Most sources show a 100 GHz flux excess with respect to the spectral slope extrapolated from low frequencies. This mm spectral component likely originates from smaller scales than the few-GHz emission. The measured mm sources lie roughly around the L_mm_ (100 GHz) ~10^-4^L_X_ (2-10 keV) relation, similar to a few previously published X-ray selected sources, and hinting perhaps at a common coronal origin. Key words: Galaxies: active, galaxies: jets, Galaxies: nuclei, radio continuum: galaxies, X-rays: galaxies
Retrieve 26 NED objects in this reference.
Please click here for ADS abstract

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