SIMBAD references

2024ApJ...964..118H - Astrophys. J., 964, 118 (2024/April-1)

Characterizing the Gamma-Ray Emission Properties of the Globular Cluster M5 with the Fermi-LAT.

HOU X., ZHANG W., FREIRE P.C.C., TORRES D.F., BALLET J., SMITH D.A., JOHNSON T.J., KERR M., CHEUNG C.C., GUILLEMOT L., LI J., ZHANG L., RIDOLFI A., WANG P., LI D., YUAN J. and WANG N.

Abstract (from CDS):

We analyzed the globular cluster M5 (NGC 5904) using 15 yr of gamma-ray data from the Fermi Large Area Telescope (LAT). Using rotation ephemerides generated from Arecibo and FAST radio telescope observations, we searched for gamma-ray pulsations from the seven millisecond pulsars (MSPs) identified in M5. We detected no significant pulsations from any of the individual pulsars. In addition, we searched for possible variations of the gamma-ray emission as a function of orbital phase for all six MSPs in binary systems, but we did not detect any significant modulations. The gamma-ray emission from the direction of M5 is well described by an exponentially cutoff power-law spectral model, although other models cannot be excluded. The phase-averaged emission is consistent with being steady on a timescale of a few months. We estimate the number of MSPs in M5 to be between 1 and 10, using the gamma-ray conversion efficiencies for well-characterized gamma-ray MSPs in the Third Fermi-LAT Catalog of Gamma-ray Pulsars, suggesting that the sample of known MSPs in M5 is (nearly) complete, even if it is not currently possible to rule out a diffuse component of the observed gamma rays from the cluster.

Abstract Copyright: © 2024. The Author(s). Published by the American Astronomical Society.

Journal keyword(s): Globular star clusters - Millisecond pulsars - Gamma-ray sources

Simbad objects: 20

goto Full paper

goto View the references in ADS

To bookmark this query, right click on this link: simbad:2024ApJ...964..118H and select 'bookmark this link' or equivalent in the popup menu