Access to Astronomical Catalogues

← Click to display the menu
J/A+A/607/A4    PLCK G004.5-19.5 images at 150, 325 and 610MHz   (Albert+, 2017)

Complex diffuse emission in the z=0.52 cluster PLCK G004.5-19.5. Albert J.G., Sifon C., Stroe A., Mernier F., Intema H.T., Rottgering H.J.A., Brunetti G. <Astron. Astrophys. 607, A4 (2017)> =2017A&A...607...A4A (SIMBAD/NED BibCode)
ADC_Keywords: Clusters, galaxy ; X-ray sources Keywords: galaxies: clusters: individual: PLCK G004.5-19.5 - galaxies: clusters: intracluster medium - X-rays: galaxies: clusters - large-scale structure of universe - radiation mechanisms: non-thermal Abstract: We present radio observations of the galaxy cluster PLCK G004.5-19.5 (z=0.52) using the Giant Metrewave Radio Telescope at 150MHz, 325MHz, and 610MHz. We find an unusual arrangement of diffuse radio emission in the center and periphery of the cluster, as well as several radio galaxies with head-tail emission. A patch of peripheral emission resembles a radio relic, and central emission resembles a radio halo. Reanalysis of archival XMM-Newton X-ray data shows that PLCK G004.5-19.5 is disturbed, which has a known correlation with the existence of radio relics and halos. Given that the number of known radio halos and radio relics at z>0.5 is very limited, PLCK G004.5-19.5 is an important addition to understanding merger-related particle acceleration at higher redshifts. Description: We carried out a set of observations on PLCK G004.5-19.5 using the GMRT at 150MHz, 325MHz (PI: A. Stroe, Project: 27_051), and 610MHz (PI: C. Sifon, Project: 25_036) with total times on source of 445min., 390min., and 798min. We performed 15 min. observations on flux calibrators 3C 48 and 3C 286 at the start and end of the observation session Objects: ----------------------------------------------------------------- RA (2000) DE Designation(s) ----------------------------------------------------------------- 19 16 54 -33 30.5 PLCK G004.5-19.5 = PLCKESZ G004.5-19.5 ----------------------------------------------------------------- File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file list.dat 152 3 List of fits images fits/* 0 3 Individual 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- 23 I4 --- Nx Number of pixels along X-axis 25- 28 I4 --- Ny Number of pixels along Y-axis 30- 33 F4.1 arcsec Beam1 Final beam 35- 38 F4.1 arcsec Beam2 Final beam 40- 44 F5.3 mJy/beam rms Background rms 46- 51 A6 --- Code GMRT project code 53- 78 A26 --- Obs.Date Observation date (YYYY-MM-DDThh:mm:ss.ssssss) 80- 86 F7.4 GHz Freq Observed frequency 88- 93 I6 Kibyte size Size of FITS file 95-114 A20 --- FileName Name of FITS file, in subdirectory fits 116-152 A37 --- Title Title of the FITS file (1)
Note (1): Multiscale, multi-frequency CLEAN performed. Fits file created by Casa v4.5.x of a Stokes I observation of PLCK G004.5-19.5. Source peeling and atmostpheric modeling code by H.T. Intema.
Acknowledgements: Joshua Albert, albert(at)strw.leidenuniv.nl
(End) Patricia Vannier [CDS] 04-Oct-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

catalogue service

© UDS/CNRS

Contact