|
| | | | |
| | | |
| Stat |
Members: 3645
Articles: 2'504'928
Articles rated: 2609
25 April 2024 |
|
| | | | |
|
Article overview
| |
|
|
Radio Luminosities and Classificatory Criteria of BL Lacertae Objects | | D. C. Mei
; L.Zhang
; Z. J. Jiang
; B.Z.Dai
; | | Date: |
25 May 2002 | | Subject: | astro-ph | | Affiliation: | Department of Physics, Yunnan University), L.Zhang (Department of Physics, Yunnan University), Z. J. Jiang (Department of Physics, Yunnan University), B.Z.Dai (Department of Physics, Yunnan University | | Abstract: | Using the sample of radio selected BL Lacertae objects (RBLs) and X-ray selected BL Lacertae objects (XBLs) presented by Sambruna et al. (1996), we calculated the luminosities of radio, optical and X-ray of each source and made the statistical analysis among the luminosities at different wave-bands, broad-band spectral indices from radio to X-ray ($alpha_{
m rx}$) and peak frequencies ($
u_p$). Our results are as follows: (i) there is a positive correlation between radio luminosity $L_{
m r}$ and $alpha_{
m rx}$ and a negative correlation between $L_{
m r}$ and $
u_p$. High-energy peak BL Lacs (HBLs) and low-energy peak BL Lacs (LBLs) can be distinguished very well, the dividing lines are probably those of $log {L_{
m r}}=43.25$ (erg/sec) and $alpha_{
m rx}>$(or $leq $)0.75 for $L_{
m r}$ - $alpha_{
m rx}$ plot and those of $log {L_{
m r}}leq 43.25$ (erg/sec) and $log {
u_p}>14.7$ for the $L_{
m r}$ - $
u_p$ plot; (ii) there is a weak positive correlation between optical luminosity $L_o$ and $alpha_{
m rx}$ and a negatively weak correlation between $L_{
m o}$ and $
u_p$; (iii) there is no correlation between X-ray luminosity $L_X$ and $alpha_{
m rx}$ or between $L_X$ and $
u_p$. From our analysis, we find that synchrotron radiation is the main X-ray radiation mechanism for HBLs while inverse Compton scattering for LBLs. | | Source: | arXiv, astro-ph/0205444 | | 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