Zobrazeno 1 - 10
of 68
pro vyhledávání: '"DAI BENZHONG"'
High-redshift blazars are the most powerful extragalactic astrophysical sources ever detected in the high-energy gamma-ray band. In this study, we present a temporal and spectral analysis of the high-redshift blazar B3 1343+451 based on 14 years of F
Externí odkaz:
http://arxiv.org/abs/2407.04553
With great advance of ground-based extensive air shower array, such as LHAASO and HAWC, many very high energy (VHE) gamma-ray sources have been discovered and are been monitored regardless of the day and the night. Hence, the Sun and Moon would have
Externí odkaz:
http://arxiv.org/abs/2405.12492
Studying the variability of the accretion disks of black holes and jets is important to identify their internal physical processes. In this letter, we obtain the characteristic damping timescale of 34 blazars and seven microquasars from the Fermi-Lar
Externí odkaz:
http://arxiv.org/abs/2405.05575
In this work, we analyzed the long term gamma-ray data by a Fermi Large Area Telescope (Fermi-LAT) of blazar S2 0109+22, ranging from 2008 to 2023. The quasi-periodic oscillations (QPOs) of blazars aided in investigating the physical properties of in
Externí odkaz:
http://arxiv.org/abs/2306.11579
The quasi-periodic oscillations (QPOs) found in active galactic nuclei (AGNs) are a very interesting observational phenomenon implying an unknown physical mechanism around supermassive black holes. Several AGNs have been found to have QPO phenomena i
Externí odkaz:
http://arxiv.org/abs/2304.08044
Autor:
Li, Liping, Zhang, Jujia, Dai, Benzhong, Li, Wenxiong, Wang, Xiaofeng, Zhai, Qian, Bai, Jinming
We present optical and ultraviolet (UV) observations of a luminous type Ia supernova (SN Ia) SN 2015bq characterized by the early flux excess. This SN reaches a B-band absolute magnitude at $M_B = -19.68 \pm 0.41$ mag and a peak bolometric luminosity
Externí odkaz:
http://arxiv.org/abs/2110.08752
Blazar variability may be driven by stochastic processes. On the other hand, quasi-periodic oscillation (QPO) behaviors are recently reported to be detected in $\it{Fermi}$-LAT data of blazars. However, the significances of these QPO signals given by
Externí odkaz:
http://arxiv.org/abs/2011.10186
The acceleration of electrons in 3C 279 is investigated through analyzing the injected electron energy distribution (EED) in a time-dependent synchrotron self-Compton + external Compton emission model. In this model, it is assumed that relativistic e
Externí odkaz:
http://arxiv.org/abs/2001.08897
Autor:
Yang, Shenbang, Yan, Dahai, Dai, Benzhong, Zhang, Pengfei, Zhu, Qianqian, Wang, Jiancheng, Zhang, Li
The statistical properties of X-ray flares from two separate locations (nucleus and HST-1) in the M87 jet are investigated to reveal the physical origin of the flares. We analyse the archival \textit{Chandra} data for M87, and identify 14 flares in t
Externí odkaz:
http://arxiv.org/abs/1908.06048
The energy dissipation mechanism in blazar jet is unknown. Blazar's flares could provide insights on this problem. Here we report statistical results of XMM-Newton X-ray flares of Mrk 421. We analyze all public XMM-Newton X-ray observations for Mrk 4
Externí odkaz:
http://arxiv.org/abs/1808.06029