|
| | | | |
| | | |
| Stat |
Members: 3645
Articles: 2'501'711
Articles rated: 2609
19 April 2024 |
|
| | | | |
|
Article overview
| |
|
|
New Evidence for the Unified Scheme of BL Lac Objects and Fri Radio Galaxies | | J.M. Bai
; Myung Gyoon Lee
; | | Date: |
15 Dec 2000 | | Subject: | astro-ph | | Affiliation: | Astronomy Program, SEES, Seoul National University, Seoul, Korea), Myung Gyoon Lee (Astronomy Program, SEES, Seoul National University, Seoul, Korea | | Abstract: | In this paper, we collect radio and X-ray observations for most Fanaroff-Riley I (FRI) radio galaxies in the Zirbel-Baum radio galaxy sample, and investigate the distribution of the radio-to-X-ray effective spectral index, $alpha_{rx}$, to test the unified scheme of BL Lac objects and FRI radio galaxies. It is found that the range of $alpha_{rx}$ for FRI radio galaxies is almost the same as that for BL Lac objects, that the distribution of $alpha_{rx}$ probably peaks at the same position as BL Lac objects, and that the distribution of $alpha_{rx}$ for FRIs is similar to that for BL Lac objects. These suggest that there exist two subclasses of FRI radio galaxies: one is HBL-like, and the other is LBL-like, corresponding to high-energy-peaked (HBL) and low--energy-peaked (LBL) BL Lac objects, respectively. This result is consistent with previous VLA observations, and supports the unified scheme of BL Lac objects and FRI radio galaxies. | | Source: | arXiv, astro-ph/0012340 | | Services: | Forum | Review | PDF | Favorites | |
|
|
No review found.
Did you like this article?
Note: answers to reviews or questions about the article must be posted in the forum section.
Authors are not allowed to review their own article. They can use the forum section.
browser Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.com)
|
| |
|
|
|
|
News, job offers and information for researchers and scientists:
| |
REGISTER