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ROSAT X-ray survey of an area 10 degrees square around the active radio galaxy Centaurus A
Diffuse X-ray material extends in an irregular, broad filament for morethan 5 degrees north east of the giant radio elliptical, NGC 5128 (CenA). In the opposite direction the X-ray extension is clearly traced forabout 2 degrees, making an overall line of X-rays of greater than 7degon the sky originating from Cen A. The direction of this line coincidesalmost exactly with the direction of the X-ray jet, and its associatedradio jet, in the interior of Cen A. At a slightly different angle,within the accuracy of measurement along the X-ray counter jet, isencountered the radio and X-ray galaxy NGC 5090. Its presence in theX-ray ejection from Cen A supports the precedent from other associationsthat NGC 5090 is physically associated with Cen A. In the hardest X-raysthere is some indication that the radio lobes from Cen A are edgebrightened. Positions and known identifications of sources in the fieldare given. Some preliminary estimates of the properties of thisextensive X-ray material which has apparently been ejected from thisactive galaxy are given.
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Osservazione e dati astrometrici
| Costellazione: | Centauro |
| Ascensione retta: | 13h20m47.77s |
| Declinazione: | -46°12'17.7" |
| Magnitudine apparente: | 8.679 |
| Distanza: | 1234.568 parsec |
| Moto proprio RA: | 20.8 |
| Moto proprio Dec: | -8.1 |
| B-T magnitude: | 10.134 |
| V-T magnitude: | 8.8 |
Cataloghi e designazioni:
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