Zobrazeno 1 - 10
of 32
pro vyhledávání: '"Zhou, Jianeng"'
We report detection of a line-like feature in the $\gamma$-ray spectrum of the blazar B0516$-$621, for which the data obtained with the Large Area Telescope onboard {\it Fermi Gamma-Ray Space Telescope (Fermi)} are analyzed. The feature is at $\sim$7
Externí odkaz:
http://arxiv.org/abs/2102.05833
We perform a systematic search of quasi-periodic variabilities in $\gamma$-ray active galactic nuclei (AGNs) in the third \emph{Fermi} Large Area Telescope source catalog (3FGL). We employe two techniques, Lomb-Scargle Periodogram (LSP) and Weighted
Externí odkaz:
http://arxiv.org/abs/2001.10777
We search through $\gamma$-ray data obtained with the Large Area Telescope (LAT) onboard the Fermi Gamma-Ray Space Telescope and find 24 blazars (or candidates) that have a single clear flare event in their 9.5 year long-term light curves. We define
Externí odkaz:
http://arxiv.org/abs/1910.13725
Publikováno v:
2022RAA....22b5016Y
Considering that the existence of relativistic particles in the protostellar jet has been confirmed by the detection of linearly polarized radio emission from the HH 80-81 jet, we search for gamma-rays from the HH 80-81 system using ten-year {\it Fer
Externí odkaz:
http://arxiv.org/abs/1908.10994
Autor:
Zhou, Jianeng, Wang, Zhongxiang, Chen, Liang, Wiita, Paul J., Vadakkumthani, Jithesh, Morrell, Nidia, Zhang, Pengfei, Zhang, Jujia
Publikováno v:
NATURE COMMUNICATIONS, 9, 4599, 2018
Since 2016 October, the active galaxy PKS 2247-131 has undergone a gamma-ray outburst, which we studied using data obtained with the Fermi Gamma-ray Space Telescope. The emission arises from a relativistic jet in PKS 2247-131, as an optical spectrum
Externí odkaz:
http://arxiv.org/abs/1811.02738
A relativistic electron-positron pair beam can be produced in the interaction of TeV photons from a blazar with the extragalactic background light (EBL). The relativistic $e^{\pm}$ pairs would loss energy through inverse-Compton scattering (ICS) phot
Externí odkaz:
http://arxiv.org/abs/1810.07013
The mechanism for producing gamma-ray quasi-periodic oscillation (QPO) in blazar is unknown. One possibility is the geometric model, in which without the need for intrinsic quasi-periodic variation, the relativistic Doppler factor changes periodicall
Externí odkaz:
http://arxiv.org/abs/1804.05342
Autor:
Yang, Jie, Pan, Xiuhua, Zhang, Jun, Ma, Siyu, Zhou, Jianeng, Jia, Zengguang, Wei, Yawen, Liu, Zengyi, Yang, Ning, Shen, Qi
Publikováno v:
In Nano Today October 2022 46
Publikováno v:
RAA, Vol. 18, No. 1, 6, 2018
We investigate the $\gamma$-ray and X-ray properties of the flat spectrum radio quasar (FSRQ) \4c50 at redshift $z= 1.517$. The {\it Fermi} Large Area Telescope (LAT) data indicate that this source was in an active state since 2013 July. During the a
Externí odkaz:
http://arxiv.org/abs/1609.09575
Publikováno v:
AJ, 2014, 148, 113
We present the optical spectroscopic observations of X Per from 1999 to 2013 with the 2.16m telescope at Xinglong Station and the 2.4m telescope at Lijiang station, National Astronomical Observatories of China. Combining with the public optical photo
Externí odkaz:
http://arxiv.org/abs/1408.3542