| | |
| | |
Stat |
Members: 3667 Articles: 2'599'751 Articles rated: 2609
15 February 2025 |
|
| | | |
|
Article overview
| |
|
Discovery of $gamma$-ray emission from the radio-intermediate quasar III Zw 2: violent jet activity with intraday $gamma$-ray variability | Liao Neng-Hui
; Xin Yu-Liang Xin
; Fan Xu-Liang
; Weng Shan-Shan
; Li Shao-Kun
; Chen Liang
; Fan Yi-Zhong
; | Date: |
1 May 2016 | Abstract: | III Zw 2 is the prototype of radio-intermediate quasars. Although there is
the evidence of possessing strong jet, detection of its $gamma$-ray emission
has not been reported before. In this paper, we carry out a detailed analysis
of the latest {it Pass} 8 {it Fermi}-LAT data. Although no significant
$gamma$-ray signal is detected in the time-averaged 7-year {it Fermi}-LAT
data of III Zw 2, we have identified two distinct $gamma$-ray flares with
luminosities of $sim 10^{45}$ erg $
m s^{-1}$. Multiwavelength data analyses
including the optical photometric observations from Yunnan Observatories are
also presented and simultaneous optical and $gamma$-ray flares of III Zw 2
were detected in Nov. 2009. Violent $gamma$-ray variability with doubling
timescale of 2.5 hours was detected in another $gamma$-ray flare in May 2010,
for which the 3-hour $gamma$-ray peak flux is $sim 250$ times of the 7-year
average flux. Rather similar behaviors are observed in blazars and the blazar
model can reasonably reproduce the spectral energy distribution of III Zw 2 in
a wide energy range, strongly suggesting that its central engine resembles that
of blazars. In view of also its atypical blazar behaviors including its
relatively low extended radio emission, short size of the radio jet and high
radio turnover frequency, we suggest that III Zw 2 is undergoing an early phase
of jet activity and serves as a valuable target for investigating the formation
of radio loud active galactic nuclei. | Source: | arXiv, 1605.0276 | 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.
|
| |
|
|
|