2014A&A...565A...2M


C.D.S. - SIMBAD4 rel 1.7 - 2019.08.24CEST10:30:42

2014A&A...565A...2M - Astronomy and Astrophysics, volume 565A, 2-2 (2014/5-1)

IGR J17488-2338: a newly discovered giant radio galaxy.

MOLINA M., BASSANI L., MALIZIA A., BIRD A.J., BAZZANO A., UBERTINI P. and VENTURI T.

Abstract (from CDS):

We present the discovery of a large-scale radio structure associated with IGR J17488-2338, a source recently discovered by INTEGRAL and optically identified as a broad-line AGN at redshift 0.24. At low frequencies, the source properties are those of an intermediate-power FR II radio galaxy with a linear size of 1.4Mpc. This new active galaxy is therefore a member of a class of objects called giant radio galaxies (GRGs), a rare type of radio galaxy with physical sizes larger than 0.7Mpc; they represent the largest and most energetic single entities in the Universe and are useful laboratories for many astrophysical studies. Their large-scale structures could be due either to special external conditions or to uncommon internal properties of the source central engine. The AGN at the centre of IGR J17488-2338 has a black hole of 1.3x109 solar masses, a bolometric luminosity of 7x1046erg/s and an Eddington ratio of 0.3, suggesting that it is powerful enough to produce the large structure observed in radio. The source is remarkable also for other properties, among which its X-ray absorption, at odds with its type 1 classification, and the presence of a strong iron line, which is a feature not often observed in radio galaxies.

Abstract Copyright:

Journal keyword(s): gamma rays: galaxies - radio continuum: galaxies - galaxies: active

Simbad objects: 5

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Number of rows : 5

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2019
#notes
1 XMMSL1 J174838.8-233527 X 17 48 38.8 -23 35 27           ~ 1 0
2 IGR J17488-2338 Sy1 17 48 39.05 -23 35 21.2           ~ 11 0
3 HD 161837 * 17 48 49.4174942977 -23 37 37.740826863   10.03 9.31     G5V 2 0
4 NAME Cyg A Sy2 19 59 28.35645829 +40 44 02.0966496   16.22 15.10     ~ 2046 2
5 2MAXI J2042+751 Sy1 20 42 37.3081453418 +75 08 02.444858560     14.46 13.80   ~ 205 0

    Equat.    Gal    SGal    Ecl

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2019.08.24-10:30:42

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