Radio identification of the X-ray jet in the z=4.3 quasar GB 1508+5714

被引:33
作者
Cheung, CC [1 ]
机构
[1] Brandeis Univ, Dept Phys, Waltham, MA 02454 USA
基金
美国国家科学基金会;
关键词
galaxies : active; galaxies : jets; quasars : general; quasars : individual (GB 1508+5714); radio continuum : galaxies; X-rays : galaxies;
D O I
10.1086/381366
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
The recent discovery of an X-ray jet in the z = 4.3 quasar GB 1508 + 5714 by Yuan et al. and Siemiginowska et al. prompted a search for its radio counterpart. Here, we report the successful discovery of faint radio emission from the jet at 1.4 GHz using archival Very Large Array data. The X-ray emission is best interpreted as inverse Compton (IC) emission off the cosmic microwave background (CMB) as discussed by the previous investigators. In this scenario, its high X-ray-to-radio monochromatic luminosity ratio, compared to previously detected IC/ CMB X-ray jets at lower redshift, is a natural consequence of its high redshift.
引用
收藏
页码:L23 / L26
页数:4
相关论文
共 29 条
[1]  
[Anonymous], 87 AIPS NRAO
[2]  
[Anonymous], 2003, VLA CALIBRATOR MANUA
[3]   DEEP VLA IMAGING OF 12 EXTENDED 3CR QUASARS [J].
BRIDLE, AH ;
HOUGH, DH ;
LONSDALE, CJ ;
BURNS, JO ;
LAING, RA .
ASTRONOMICAL JOURNAL, 1994, 108 (03) :766-820
[4]   EXTRAGALACTIC RADIO JETS [J].
BRIDLE, AH ;
PERLEY, RA .
ANNUAL REVIEW OF ASTRONOMY AND ASTROPHYSICS, 1984, 22 :319-358
[5]   Chandra discovery of extended non-thermal emission in 3C 207 and the spectrum of the relativistic electrons [J].
Brunetti, G ;
Bondi, M ;
Comastri, A ;
Setti, G .
ASTRONOMY & ASTROPHYSICS, 2002, 381 (03) :795-809
[6]   VLBI observations of the gravitational lens system 0957+561 [J].
Campbell, RM ;
Lehar, J ;
Corey, BE ;
Shapiro, II ;
Falco, EE .
ASTRONOMICAL JOURNAL, 1995, 110 (06) :2566-2569
[7]   Large-scale jets in active galactic nuclei: multiwavelength mapping [J].
Celotti, A ;
Ghisellini, G ;
Chiaberge, M .
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 2001, 321 (01) :L1-L5
[8]   The Chandra X-ray Observatory resolves the X-ray morphology and spectra of a jet in PKS 0637-752 [J].
Chartas, G ;
Worrall, DM ;
Birkinshaw, M ;
Cresitello-Dittmar, M ;
Cui, W ;
Ghosh, KK ;
Harris, DE ;
Hooper, EJ ;
Jauncey, DL ;
Kim, DW ;
Lovell, J ;
Mathur, S ;
Schwartz, DA ;
Tingay, SJ ;
Virani, SN ;
Wilkes, BJ .
ASTROPHYSICAL JOURNAL, 2000, 542 (02) :655-666
[9]   Constraining Ho from Chandra observations of Q0957+561 [J].
Chartas, G ;
Gupta, V ;
Garmire, G ;
Jones, C ;
Falco, EE ;
Shapiro, II ;
Tavecchio, F .
ASTROPHYSICAL JOURNAL, 2002, 565 (01) :96-104
[10]   Chandra reveals X-rays along the radio axis in the quasar 3C 9 at z=2.012 [J].
Fabian, AC ;
Celotti, A ;
Johnstone, RM .
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 2003, 338 (01) :L7-L11