scholarly journals Variability and Proper Motion of X-Ray Knots in the Jet of Centaurus A

2019 ◽  
Vol 871 (2) ◽  
pp. 248 ◽  
Author(s):  
Bradford Snios ◽  
Sarka Wykes ◽  
Paul E. J. Nulsen ◽  
Ralph P. Kraft ◽  
Eileen T. Meyer ◽  
...  
Keyword(s):  
Proper Motion ◽  
X Ray ◽  
Centaurus A

An X-ray expansion and proper motion study of the Magellanic Cloud Supernova Remnant J0509–6731 with the Chandra X-ray observatory

2018 ◽  
Vol 479 (2) ◽  
pp. 1800-1806 ◽  
Author(s):  
Quentin Roper ◽  
Miroslav Filipovic ◽  
Glenn E Allen ◽  
Hidetoshi Sano ◽  
Laurence Park ◽  
...  
Keyword(s):  
Proper Motion ◽  
Supernova Remnant ◽  
Magellanic Cloud ◽  
X Ray ◽  
Motion Study

A Centaurus A : Spectra of the Optical Filament

1975 ◽  
Vol 2 (6) ◽  
pp. 366-367 ◽  
Author(s):  
B.A. Peterson ◽  
R.J. Dickens ◽  
R.D. Cannon
Keyword(s):  
Radio Source ◽  
Elliptical Galaxy ◽  
Brightness Distribution ◽  
Radio Brightness ◽  
Dust Lane ◽  
X Ray ◽  
The Galaxy ◽  
Centaurus A

The radio source, Cen A, is large and complex with many peaks in the brightness distribution over an area about 4 x 10 degrees. The peculiar elliptical galaxy NGC 5128 lies between the two strong inner radio brightness peaks and is centred on a weaker central radio source. This radio source is in the centre of the dust lane which divides the galaxy and may be related to the infrared, X-ray and γ-ray sources.

scholarly journals Non-thermal emission in radio galaxy lobes – II. Centaurus A, Centaurus B, and NGC 6251

2019 ◽  
Vol 490 (2) ◽  
pp. 1489-1497 ◽  
Author(s):  
Massimo Persic ◽  
Yoel Rephaeli
Keyword(s):  
Thermal Emission ◽  
Background Radiation ◽  
Spectral Energy Distribution ◽  
Recent Analysis ◽  
Spectral Energy ◽  
Energetic Proton ◽  
X Ray ◽  
Radiation Fields ◽  
Γ Ray ◽  
Centaurus A

ABSTRACT Radio and γ-ray measurements of large lobes of several radio galaxies provide adequate basis for determining whether emission in these widely separated spectral regions is largely by energetic electrons. This is very much of interest as there is of yet no unequivocal evidence for a significant energetic proton component to account for γ-ray emission by neutral pion decay. A quantitative assessment of the pion yield spectral distribution necessitates full accounting of the local and background radiation fields in the lobes; indeed, doing so in our recent analysis of the spectral energy distribution of the Fornax A lobes considerably weakened previous conclusions on the hadronic origin of the emission measured by the Fermi satellite. We present the results of similar analyses of the measured radio, X-ray, and γ-ray emission from the lobes of Centaurus A, Centaurus B, and NGC 6251. The results indicate that the measured γ-ray emission from these lobes can be accounted for by Compton scattering of the radio-emitting electrons off the superposed radiation fields in the lobes; consequently, we set upper bounds on the energetic proton contents of the lobes.

X-Ray Observations of NGC 5128 (centaurus a) from UHURU

1973 ◽  
Vol 180 ◽  
pp. 715 ◽  
Author(s):  
W. Tucker ◽  
E. Kellogg ◽  
H. Gursky ◽  
R. Giacconi ◽  
H. Tananbaun
Keyword(s):  
X Ray ◽  
Centaurus A

The X-ray structure of Centaurus A

1981 ◽  
Vol 251 ◽  
pp. 31 ◽  
Author(s):  
E. D. Feigelson ◽  
E. J. Schreier ◽  
J. P. Delvaille ◽  
R. Giacconi ◽  
J. E. Grindlay ◽  
...  
Keyword(s):  
X Ray ◽  
Centaurus A

Einstein observations of the X-ray structure of Centaurus A - Evidence for the radio-lobe energy source

1979 ◽  
Vol 234 ◽  
pp. L39 ◽  
Author(s):  
E. J. Schreier ◽  
E. Feigelson ◽  
J. Delvaille ◽  
R. Giacconi ◽  
J. Grindlay ◽  
...  
Keyword(s):  
Energy Source ◽  
X Ray ◽  
Radio Lobe ◽  
Centaurus A

scholarly journals Chandra Observations of the Guitar Nebula

2003 ◽  
Vol 214 ◽  
pp. 135-136 ◽  
Author(s):  
Diane S. Wong ◽  
James M. Cordes ◽  
Shami Chatterjee ◽  
Ellen G. Zweibel ◽  
John P. Finley ◽  
...  
Keyword(s):  
Proper Motion ◽  
Hot Spot ◽  
Optical Emission ◽  
Position Angle ◽  
Bow Shock ◽  
Radio Pulsar ◽  
X Ray ◽  
Multi Wavelength ◽  
Pulsar Wind

As part of a multi-wavelength study, we report on a 50 ks Chandra/ACIS observation of the Guitar Nebula, a bow shock nebula associated with the radio pulsar B2224+65. We see a “hot spot” at the tip of the bow shock. We also notice a “jet” of X-ray emission at position angle (PA) −69°. However, the proper motion of the pulsar and the axis of optical emission is at PA 52°.1. We discuss the resulting interpretations of the relativistic pulsar wind and the surrounding ISM.

scholarly journals The North Middle Lobe of Centaurus A

2014 ◽  
Vol 10 (S313) ◽  
pp. 246-247
Author(s):  
Susan G. Neff ◽  
Jean A. Eilek ◽  
Frazer N. Owen
Keyword(s):  
Large Scale ◽  
Star Formation Rate ◽  
Formation Rate ◽  
Middle Lobe ◽  
X Ray ◽  
Linear Feature ◽  
The North ◽  
The Galaxy ◽  
Hα Emission ◽  
Centaurus A

AbstractWe present new, deep VLA 327 MHz, GALEX Far-UV, and Hα images of the inner ~50 kpc of Centaurus A. We find the structure identified by Morganti et al. 1999 as a possible “large scale jet” is part of a knotty, linear feature within a broader region of diffuse radio emission. The linear feature is coincident with a narrow ribbon of Far-UV and Hα emission that extends 6-35 kpc from the galaxy core, as well with a similar ridge of soft X-ray emission. The Far-UV image also shows that a strong starburst is occurring in the central dusty disk, with a star-formation rate of ~ 2M⊙ yr−1. We suggest that the various peculiar phenomena seen to the NE of the galaxy can be explained by a wind from the starburst disk, enhanced by energy input from the AGN.

scholarly journals A soft X-ray lag detected in Centaurus A

2016 ◽  
Vol 68 (SP1) ◽  
pp. S25 ◽  
Author(s):  
Yutaro Tachibana ◽  
Taiki Kawamuro ◽  
Yoshihiro Ueda ◽  
Megumi Shidatsu ◽  
Makoto Arimoto ◽  
...  
Keyword(s):  
X Ray ◽  
Centaurus A
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