A multiwavelength study on the high-energy behavior of the Fermi/LAT pulsars

60Citations
Citations of this article
15Readers
Mendeley users who have this article in their library.

Abstract

Using archival as well as freshly acquired data, we assess the X-ray behavior of the Fermi/Large Area Telescope γ-ray pulsars listed in the First Fermi source catalog. After revisiting the relationships between the pulsars' rotational energy losses and their X-ray and γ-ray luminosities, we focus on the distance-independent γ-to-X-ray flux ratios. When plotting our F γ/F X values as a function of the pulsars' rotational energy losses, one immediately sees that pulsars with similar energetics have F γ/F X spanning three decades. Such spread, most probably stemming from vastly different geometrical configurations of the X-ray and γ-ray emitting regions, defies any straightforward interpretation of the plot. Indeed, while energetic pulsars do have low F γ/F X values, little can be said for the bulk of the Fermi neutron stars. Dividing our pulsar sample into radio-loud and radio-quiet subsamples, we find that, on average, radio-quiet pulsars do have higher values of F γ/F X, implying an intrinsic faintness of their X-ray emission and/or a different geometrical configuration. Moreover, despite the large spread mentioned above, statistical tests show a lower scatter in the radio-quiet data set with respect to the radio-loud one, pointing to a somewhat more constrained geometry for the radio-quiet objects with respect to the radio-loud ones. © 2011. The American Astronomical Society. All rights reserved.

Cite

CITATION STYLE

APA

Marelli, M., Luca, A. D., & Caraveo, P. A. (2011). A multiwavelength study on the high-energy behavior of the Fermi/LAT pulsars. Astrophysical Journal, 733(2). https://doi.org/10.1088/0004-637X/733/2/82

Register to see more suggestions

Mendeley helps you to discover research relevant for your work.

Already have an account?

Save time finding and organizing research with Mendeley

Sign up for free