Multiwavelength observations of 26W20, a radio galaxy which displays BL Lac characteristics
| dc.creator | Silverman, J. D. | |
| dc.creator | Harris, D. E. | |
| dc.creator | Junor, W. | |
| dc.date | 1998-04-20 | |
| dc.date.accessioned | 2026-07-07T02:26:38Z | |
| dc.date.available | 2026-07-07T02:26:38Z | |
| dc.description | 26W20, a radio galaxy located at a projected distance of 2.2 Mpc from the center of Abell 754 (z=0.054) exhibits core emission properties similar to those of a BL Lac object. New radio observations and VLA archival data show parsec scale features in the core (L_{r} approx.10^{41}) ergs/s with a flat spectrum. From observations with ROSAT, we demonstrate that the X-ray core emission (L_{x}=3X10^{43}) ergs/s is non-thermal and variable. An 18% increase in the X-ray luminosity was observed in two observations separated by five days. The optical morphology is that of a large, normal elliptical galaxy (m_{v}=15.6) and the optical spectrum lacks strong emission lines. If the innermost segment of the radio jet is close to our line of sight, Doppler boosting could explain both the observed X-ray intensity and the absence of emitting line regions. | |
| dc.description | To be published in 'Astronomy and Astrophysics' as a research note. 6 pages of LaTex including 7 postscript figures. Uses aa.cls | |
| dc.identifier | https://arxiv.org/abs/astro-ph/9804197 | |
| dc.identifier | http://arxiv.org/abs/astro-ph/9804197 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/12353 | |
| dc.subject | Astrophysics | |
| dc.title | Multiwavelength observations of 26W20, a radio galaxy which displays BL Lac characteristics | |
| dc.type | text |