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J/A+A/600/A87      IRAS17020+4544 VLBA 5, 8, 15, 24GHz images (Giroletti+, 2017)

Coexistence of a non thermal jet and a complex ultra fast X-ray outflow in a moderately luminous AGN. Giroletti M., Panessa F., Longinotti A.L., Krongold Y., Guainazzi M., Costantini E., Santos-Lleo M. <Astron. Astrophys. 600, A87 (2017)> =2017A&A...600A..87G (SIMBAD/NED BibCode)
ADC_Keywords: Infrared sources ; Active gal. nuclei ; Radio sources Keywords: galaxies: Seyfert - galaxies: nuclei - galaxies: jets - galaxies: active - Abstract: Recent XMM-Newton observations have revealed that IRAS 17020+4544 is a very unusual example of black hole windproduced feedback by a moderately luminous AGN in a spiral galaxy. Since the source is known for being a radio emitter, we investigated about the presence and the properties of a non-thermal component. We observed IRAS 17020+4544 with the Very Long Baseline Array at 5, 8, 15, and 24GHz within a month of the 2014 XMM-Newton observations. We further analysed archival data taken in 2000 and 2012. Results. We detect the source at 5GHz and on short baselines at 8GHz. At 15 and 24 GHz, the source is below our baseline sensitivity for fringe fitting, indicating the lack of prominent compact features. The morphology is that of an asymmetric double, with significant diffuse emission. The spectrum between 5 and 8GHz is rather steep (Sν∼nu-(1.0±0.2)). Our re-analysis of the archival data at 5 and 8GHz provides results consistent with the new observations, suggesting that flux density and structural variability are not important in this source. We put a limit on the separation speed between the main components of <0.06c. IRAS 17020+4544 shows interesting features of several classes of objects: its properties are typical of compact steep spectrum sources, low power compact sources, radio-emitting narrow line Seyfert 1 galaxies. However, it can not be classified in any of these categories, remaining so far a one-of-a-kind object. Description: We observed IRAS 17020+4544 with the NRAO Very Long Baseline Array (VLBA) on 2014 February 12, 20 days later than the XMM-Newton pointing. We observed the source at 5, 8, 15, and 24GHz, for a net integration time of 10, 20, 60, and 60 minutes, respectively. We recorded data with the new 2 Gbps rate offered by the VLBA, corresponding to 8 baseband channels of 32MHz bandwidth each, in full polarization. Objects: ---------------------------------------------------------------------- RA (2000) DE Designation(s) ---------------------------------------------------------------------- 17 03 30.41 +45 40 47.1 IRAS 17020+4544 = 2XMM J170330.2+454047 ---------------------------------------------------------------------- File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file list.dat 160 6 Informations on fits images fits/* 0 6 Individual fits images
Byte-by-byte Description of file: list.dat
Bytes Format Units Label Explanations
1- 9 F9.5 deg RAdeg Right Ascension of center (J2000) 10- 18 F9.5 deg DEdeg Declination of center (J2000) 20- 22 I3 --- Nx Number of pixels along X-axis 24- 26 I3 --- Ny Number of pixels along Y-axis 28- 37 A10 "date" Obs.date Observation date 39- 45 F7.5 GHz Freq Observed frequency 47- 49 I3 Kibyte size Size of FITS file 51- 59 A9 --- FileName Name of FITS file, in subdirectory fits 61-160 A100 --- Title Title of the FITS file
Acknowledgements: Marcello Giroletti, mgirolet(at)gmail.com
(End) Patricia Vannier [CDS] 07-Feb-2017
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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