DAMPE detection of strong variable GeV gamma-ray emission from the FSRQ PKS1830-211
ATel #12705; Zun-Lei Xu (PMO), Kai-Kai Duan (PMO), Wei Jiang(PMO), Fabio Gargano (Bari), Shi-Jun Lei (PMO), Xiang Li (PMO), Yun-Feng Liang (PMO), Neng-Hui Liao (PMO), M. Nicola Mazziotta (Bari), Maria Munoz Salinas(UNIGE),Zhao-Qiang Shen (PMO), Meng Su (HKU/PMO), Qiang Yuan (PMO), Yi-Zhong Fan (PMO), Jin Chang (PMO), on behalf of the DAMPE collaboration
on 30 Apr 2019; 02:59 UT
Credential Certification: Zun-Lei Xu (xuzl@pmo.ac.cn)
Subjects: Gamma Ray, >GeV, AGN, Blazar
The DArk Matter Particle Explorer (DAMPE) as a high energy cosmic ray and gamma-ray satellite-borne observatory, has detected GeV gamma-ray flare from a source positionally coincident with the PKS1830-211 and coordinates of RA = 18h 33m 39.9s, Dec = -21d 03m 40s, (J2000, van Ommen et al., 1995, ApJ, 444, 561).
The DAMPE has recorded increased number of photons since April, 2019 UT. Our preliminary analysis shows a peak daily flux of ~(1.02+/-0.36) X 10^-6 photons cm^-2 s^-1 above 2 GeV, recorded on April 24th, 2019 UT. The daily light curve shows significant variabilities. The search for past data of DAMPE reveals relatively low state emission after launched when the source was within the field-of-view of the DAMPE. Enhanced activities of FSRQ PKS1830-211 was also reported by other observatory (ATel#12594, ATel#12601, ATel#12685).
DAMPE is a space-borne calorimeter detector of high energy cosmic rays and gamma-rays. The detectable energy range is about 2 GeV to 10 TeV for gamma-rays. More information about DAMPE can be found at http://www.space.pmo.cas.cn/.
