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J/ApJ/722/L7          Fermi/LAT detected MOJAVE AGNs          (Pushkarev+, 2010)

Radio/Gamma-ray time delay in the parsec-scale cores of active galactic nuclei. Pushkarev A.B., Kovalev Y.Y., Lister M.L. <Astrophys. J., 722, L7-L11 (2010)> =2010ApJ...722L...7P
ADC_Keywords: Active gal. nuclei ; Gamma rays ; Radio continuum ; Redshifts Keywords: galaxies: active - galaxies: jets - gamma rays: galaxies - radio continuum: galaxies Abstract: We report the detection of a non-zero time delay between radio emission measured by the VLBA at 15.4GHz and γ-ray radiation (γ-ray leads radio) registered by the Large Area Telescope (LAT) on board the Fermi Gamma-Ray Space Telescope for a sample of 183 radio and γ-ray bright active galactic nuclei. For the correlation analysis, we used 0.1-100GeV γ-ray photon fluxes, taken from monthly binned measurements from the first Fermi LAT catalog (1FGL; Abdo et al. 2010, Cat. J/ApJS/188/405), and 15.4GHz radio flux densities from the MOJAVE VLBA program (Lister et al. 2009, Cat. J/AJ/137/3718). The correlation is most pronounced if the core flux density is used, strongly indicating that the γ-ray emission is generated within the compact region of the 15GHz VLBA core. Determining the Pearson's r and Kendall's τ correlation coefficients for different time lags, we find that for the majority of sources the radio/γ-ray delay ranges from 1 to 8 months in the observer's frame and peaks at approximately 1.2 months in the source's frame. We interpret the primary source of the time delay to be synchrotron opacity in the nuclear region. File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file table1.dat 101 182 LAT-detected MOJAVE AGNs
See also: VII/258 : Quasars and Active Galactic Nuclei (13th Ed.) (Veron+ 2010) J/ApJ/715/429 : First Fermi-LAT AGN catalog (1LAC) (Abdo+, 2010) J/ApJS/188/405 : Fermi-LAT first source catalog (1FGL) (Abdo+, 2010) J/ApJ/700/597 : FERMI LAT detected blazars (Abdo+, 2009) J/AJ/137/3718 : 15GHz monitoring of AGN jets with VLBA (Lister+, 2009) J/ApJ/707/L56 : VLBI and bright Fermi/LAT sources (Kovalev, 2009) J/ApJS/175/97 : CGRaBS: γ-ray blazar candidates (Healey+, 2008) : 9th European VLBI Symposium Byte-by-byte Description of file: table1.dat
Bytes Format Units Label Explanations
1- 8 A8 --- VLBI IAU name (HHMM-DDd; B1950) of VLBI association (<IERS BHHMM+DDd> or <IVS BHHMM+DDd> in Simbad) 10- 23 A14 --- AName Alternative name 25- 28 A4 --- --- [1FGL] 30- 41 A12 --- 1FGL First Fermi LAT catalog name (JHHMM.m+DDMM) 43- 47 F5.3 --- z ? Redshift 49- 67 A19 --- Auth Redshift author's reference 69- 87 A19 --- r_z Redshift bibcode's reference 89-101 A13 --- Cat Redshift catalog's reference
History: From electronic version of the journal
(End) Greg Schwarz [AAS], Emmanuelle Perret [CDS] 12-Jul-2012
The document above follows the rules of the Standard Description for Astronomical Catalogues.From this documentation it is possible to generate f77 program to load files into arrays or line by line

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