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Titolo:
Chandra finds that X-ray jets are common in low-power radio galaxies
Autore:
Worrall, DM; Birkinshaw, M; Hardcastle, MJ;
Indirizzi:
Univ Bristol, Dept Phys, Bristol BS8 1TL, Avon, England Univ Bristol Bristol Avon England BS8 1TL Bristol BS8 1TL, Avon, England
Titolo Testata:
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
fascicolo: 1, volume: 326, anno: 2001,
pagine: L7 - L12
SICI:
0035-8711(20010901)326:1<L7:CFTXJA>2.0.ZU;2-7
Fonte:
ISI
Lingua:
ENG
Soggetto:
CENTAURUS-A; ROSAT HRI; EMISSION; LOBES; GAS; PKS-0637-752; ASYMMETRIES; DISCOVERY; SPECTRUM; NGC-6251;
Keywords:
galaxies : active; galaxies : individual : 0206+35; galaxies : individual : 0331+39; galaxies : individual : NGC 2484; galaxies : jets; X-rays : galaxies;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Citazioni:
32
Recensione:
Indirizzi per estratti:
Indirizzo: Worrall, DM Univ Bristol, Dept Phys, Bristol BS8 1TL, Avon, England Univ Bristol Bristol Avon England BS8 1TL 1TL, Avon, England
Citazione:
D.M. Worrall et al., "Chandra finds that X-ray jets are common in low-power radio galaxies", M NOT R AST, 326(1), 2001, pp. L7-L12

Abstract

We present results for the first three low-power radio galaxies from the B2 bright sample to have been observed with Chandra. Two have kiloparsec-scale radio jets, and in both Chandra resolves jet X-ray emission, and detectssoft X-ray core emission and an X-ray-emitting galaxy-scale atmosphere of luminosity a few x10(41) erg s(-1). These are the first detections of X-rayjets in low-power radio galaxies more distant than Centaurus A and M87. The cooling time of the galaxy-scale gas implies mass infall rates of the order of 1 M-. yr(-1). The gas pressure near the jets is comparable to the minimum pressure in the jets, implying that the X-ray-emitting gas may play animportant role in jet dynamics. The third B2 radio galaxy has no kiloparsec-scale radio jet, and here only soft X-ray emission from the core is detected. The ratio of X-ray to radio flux is similar for the jets and cores, and the results favour a synchrotron origin for the emission. Kiloparsec-scale radio jets are detected in the X-ray in similar to7-ks exposures with Chandra more readily than in the optical via Hubble Space Telescope snapshot surveys.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 31/03/20 alle ore 15:49:22