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

Authors

Bin-Bin Zhang, Instituto de Astrofísica de Andalucá
Bing Zhang, University of Nevada, Las VegasFollow

Document Type

Article

Publication Date

1-1-2017

Publication Title

Astrophysical Journal Letters

Volume

843

Issue

1

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.

File Format

pdf

File Size

628 KB

Language

english

Repository Citation

Zhang, B., Zhang, B. (2017). Repeating FRB 121102: Eight-year Fermi-LAT Upper Limits and Implications. Astrophysical Journal Letters, 843(1),
http://dx.doi.org/10.3847/2041-8213/aa7633