A Caltech Library Service

Scale Invariant Jets: From Blazars to Microquasars

Liodakis, Ioannis and Pavlidou, Vasiliki and Papadakis, Iossif and Angelakis, Emmanouil and Marchili, Nicola and Zensus, Johann A. and Fuhrmann, Lars and Karamanavis, Vassilis and Myserlis, Ioannis and Nestoras, Ioannis and Palaiologou, Efthymios and Readhead, Anthony C. S. (2017) Scale Invariant Jets: From Blazars to Microquasars. Astrophysical Journal, 851 (2). Art. No. 144. ISSN 1538-4357.

[img] PDF - Published Version
See Usage Policy.

[img] PDF - Submitted Version
See Usage Policy.


Use this Persistent URL to link to this item:


Black holes, anywhere in the stellar-mass to supermassive range, are often associated with relativistic jets. Models suggest that jet production may be a universal process common in all black hole systems regardless of their mass. Although in many cases observations support such hypotheses for microquasars and Seyfert galaxies, little is known regarding whether boosted blazar jets also comply with such universal scaling laws. We use uniquely rich multi-wavelength radio light curves from the F-GAMMA program and the most accurate Doppler factors available to date to probe blazar jets in their emission rest frame with unprecedented accuracy. We identify for the first time a strong correlation between the blazar intrinsic broadband radio luminosity and black hole mass, which extends over ~9 orders of magnitude down to microquasar scales. Our results reveal the presence of a universal scaling law that bridges the observing and emission rest frames in beamed sources and allows us to effectively constrain jet models. They consequently provide an independent method for estimating the Doppler factor and for predicting expected radio luminosities of boosted jets operating in systems of intermediate or tens of solar mass black holes, which are immediately applicable to cases such as those recently observed by LIGO.

Item Type:Article
Related URLs:
URLURL TypeDescription Paper
Liodakis, Ioannis0000-0001-9200-4006
Angelakis, Emmanouil0000-0001-7327-5441
Readhead, Anthony C. S.0000-0001-9152-961X
Additional Information:© 2017 The American Astronomical Society. Received 2017 July 19; revised 2017 November 5; accepted 2017 November 7; published 2017 December 21. The authors would like to thank Andreas Zezas and the anonymous referee for comments and suggestions that helped improve this work. This research was supported by the "Aristeia" Action of the "Operational Program Education and Lifelong Learning" and is co-funded by the European Social Fund (ESF) and Greek National Resources, and by the European Commission Seventh Framework Program (FP7) through grants PCIG10-GA-2011-304001 "JetPop" and PIRSES-GA-2012-31578 "EuroCal." Our study is based on observations carried out with the 100 m telescope of the MPIfR (Max-Planck-Institut für Radioastronomie) and the IRAM 30 m telescope. IRAM is supported by INSU/CNRS (France), MPG (Germany), and IGN (Spain). I.N., I.M., and V.K. were supported for this research through a stipend from the International Max Planck Research School (IMPRS) for Astronomy and Astrophysics at the Universities of Bonn and Cologne.
Group:Astronomy Department
Funding AgencyGrant Number
European Social FundUNSPECIFIED
Greek National ResourcesUNSPECIFIED
Marie Curie FellowshipPCIG10-GA-2011-304001
European Research Council (ERC)PIRSES-GA-2012-31578
Institut National des Sciences de l'Univers (INSU)UNSPECIFIED
Centre National de la Recherche Scientifique (CNRS)UNSPECIFIED
Max Planck SocietyUNSPECIFIED
Instituto Geográfico Nacional (IGN)UNSPECIFIED
University of BonnUNSPECIFIED
University of CologneUNSPECIFIED
Subject Keywords:galaxies: active – galaxies: jets – relativistic processes
Issue or Number:2
Record Number:CaltechAUTHORS:20171221-155805578
Persistent URL:
Official Citation:Ioannis Liodakis et al 2017 ApJ 851 144
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:84011
Deposited By: Tony Diaz
Deposited On:22 Dec 2017 00:09
Last Modified:20 May 2020 21:23

Repository Staff Only: item control page