Fermi/LAT detection of enhanced gamma-ray activity from the blazars OP 313 and 4C +01.02
ATel #14404; Authors(Affiliation): Mangal Hazra (MCC), Sabyasachi Pal (MCC/ICSP), Debasish Saha (MCC)
on 18 Feb 2021; 19:38 UT
Credential Certification: Sabyasachi Pal (sabya.pal@gmail.com)
Subjects: Gamma Ray, >GeV, TeV, VHE, Request for Observations, AGN, Blazar, Transient
We report a flaring activity in gamma rays from two different blazars OP 313 and 4C +01.02 as detected by Large Area Telescope (LAT) onboard Fermi in the energy band E >100 MeV. Previously both of these sources were observed to show flaring activity multiple times (eg., ATEL #6068, #6072, #12898 for OP 313 and ATEL #8319, #9232, #12243 for 4C +01.02).
OP 313 is a flat spectrum radio source. The gamma-ray flux from OP 313 is incresing consistently. The daily averaged flux has reached (4.2±0.05) × 10-7 photons/cm2/s (statistical uncertainty only) on MJD 59261 (2021-02-16).
Gamma ray flux from the another blazar 4C +01.02 reached (5.1±0.04) × 10-7 photons/cm2/s (statistical uncertainty only) on MJD 59261 (2021-02-16).
Since the flux is increasing for both of the blazers, multi-wavelength follow-up observations are highly encouraged.
The Fermi-LAT is a pair conversion telescope designed to cover the energy band from 20 MeV to greater than 300 GeV. It is the product of an international collaboration between NASA and DOE in the USA and many scientific institutions across France, Italy, Japan and Sweden.
