Repeating FRB 121102: Eight-year Fermi-LAT Upper Limits and Implications

DOI: 
10.3847/2041-8213/aa7633
Publication date: 
25/07/2017
Main author: 
Zhang B.-B.
IAA authors: 
Zhang, B.-B.
Authors: 
Zhang B.-B., Zhang B.
Journal: 
Astrophysical Journal Letters
Publication type: 
Article
Volume: 
843
Number: 
L13
Abstract: 

The repeating fast radio burst (FRB) source that produced FRB 121102 was recently localized in a star-forming galaxy at z = 0.193, which is associated with an extended radio source at the burst location. One possibility is that the repeating FRBs are produced by a new-born magnetar, which also powers the radio nebula. If so, the magnetar may produce γ-ray emission due to magnetic dipolar spin-down. The luminosity depends on the magnetar spin parameters and age. We process the eight-year Fermi-LAT data at the position of FRB 121102 and place an energy flux upper limit of ∼10-11 erg cm-2s-1in time bins with six-month intervals, and an accumulated energy flux upper limit of ∼4 × 10-12erg cm-2 s-2over the eight-year span. The corresponding γ-ray luminosity upper limits are ∼1045 erg s-1and for the time-resolved and time-integrated analyses, respectively. We discuss the implications of these limits on the young magnetar model. © 2017. The American Astronomical Society. All rights reserved.

Database: 
SCOPUS
URL: 
https://www.scopus.com/inward/record.uri?eid=2-s2.0-85021777244&doi=10.3847%2f2041-8213%2faa7633&partnerID=40&md5=655dd8b5a74823ef770bf8eaa62239f2
Keywords: 
pulsars: general; radiation mechanisms: non-thermal; stars: magnetars; stars: magnetic field