Two Example GRBs Where Fermi LAT "Extended" Data Gives a Better Photon List than "Photon"

Authors

E. Casey Aldrich, Michigan Technological UniversityFollow
Oindabi Mukherjee, Michigan Technological UniversityFollow
Robert J. Nemiroff, Michigan Technological UniversityFollow

Document Type

Article

Publication Date

11-2022

Department

Department of Physics

Abstract

When analyzing Fermi LAT data for temporally contained events like gamma-ray bursts (GRBs), the best data type for analyses is "Extended," not "Photon." Although this is already recommended by the online Fermi website, it is easy to overlook and can lead to inferior analyses. Most extended "events" that are temporally and angularly consistent with GRBs are probably photons. While preparing GRB data for other research projects, the authors encountered this counter-intuitive fact several times. The data from two GRBs are presented with a simple analysis as a demonstration.

Publisher's Statement

© 2022. The Author(s). Published by the American Astronomical Society. Publisher’s version of record: https://doi.org/10.3847/2515-5172/aca15c

Publication Title

Research Notes of the AAS

Recommended Citation

Aldrich, E., Mukherjee, O., & Nemiroff, R. J. (2022). Two Example GRBs Where Fermi LAT "Extended" Data Gives a Better Photon List than "Photon". Research Notes of the AAS, 6(11). http://doi.org/10.3847/2515-5172/aca15c
Retrieved from: https://digitalcommons.mtu.edu/michigantech-p/17317

Creative Commons License

This work is licensed under a Creative Commons Attribution 4.0 International License.