Anomalous radio-loudness of Cygnus A and other powerful radio galaxies

被引：91

作者：

Barthel, PD

Arnaud, KA

机构：

[1] NASA,GODDARD SPACE FLIGHT CTR,HIGH ENERGY ASTROPHYS LAB,GREENBELT,MD 20771

[2] UNIV MARYLAND,DEPT ASTRON,COLLEGE PK,MD 20742

来源：

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY | 1996年 / 283卷 / 02期

关键词：

galaxies; active; intergalactic medium; infrared; radio continuum;

D O I：

10.1093/mnras/283.2.L45

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

The nearby, extremely powerful radio galaxy Cygnus A stands out as having an atypically low far-infrared/radio luminosity ratio. It is demonstrated that in objects displaying such a low ratio the radio-loudness is anomalously high, which fact is connected to these objects inhabiting dense X-ray haloes. The enhanced radio emission is most likely due to strong radiation losses in the dense environment, It must be concluded that radio luminosity is not a good measure of AGN power.

引用

收藏

页码：L45 / L49

页数：5

相关论文

共 46 条

[1] THE INTRACLUSTER GAS AROUND CYGNUS-A [J].

ARNAUD, KA ;

FABIAN, AC ;

EALES, SA ;

JONES, C ;

FORMAN, W .

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 1984, 211 (04) :981-989

[2] IDENTIFICATION OF THE RADIO SOURCES IN CASSIOPEIA, CYGNUS-A, AND PUPPIS-A [J].

BAADE, W ;

MINKOWSKI, R .

ASTROPHYSICAL JOURNAL, 1954, 119 (01) :206-&

[3]

BAARS JWM, 1977, ASTRON ASTROPHYS, V61, P99

[4] EXTRAGALACTIC RADIO-SOURCES WITH STEEP LOW-FREQUENCY SPECTRA [J].

BALDWIN, JE ;

SCOTT, PF .

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 1973, 165 (03) :259-269

[5] EXTENDED OPTICAL-LINE EMITTING GAS IN POWERFUL RADIO GALAXIES - STATISTICAL PROPERTIES AND PHYSICAL CONDITIONS [J].

BAUM, SA ;

HECKMAN, T .

ASTROPHYSICAL JOURNAL, 1989, 336 (02) :681-701

[6] EXTENDED OPTICAL-LINE-EMITTING GAS IN RADIO GALAXIES - BROAD-BAND OPTICAL NARROW-BAND OPTICAL, AND RADIO IMAGING OF A REPRESENTATIVE SAMPLE [J].

BAUM, SA ;

HECKMAN, T ;

BRIDLE, A ;

VANBREUGEL, W ;

MILEY, G .

ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES, 1988, 68 (04) :643-714

[7] MULTIFREQUENCY VLA OBSERVATIONS OF PKS 0745-191 - THE ARCHETYPAL COOLING FLOW RADIO-SOURCE [J].

BAUM, SA ;

ODEA, CP .

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 1991, 250 (04) :737-749

[8]

Burns JO, 1996, ASTR SOC P, V100, P341

[9] Cygnus A [J].

Carilli, CL ;

Barthel, PD .

ASTRONOMY AND ASTROPHYSICS REVIEW, 1996, 7 (01) :1-54

[10] ROSAT OBSERVATIONS OF 3CR RADIO GALAXIES [J].

CRAWFORD, CS ;

FABIAN, AC .

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 1995, 273 (03) :827-836

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