Discovery of Nine Gamma-Ray Pulsars in Fermi-LAT Data Using a New Blind Search Method

Abstract

We report the discovery of nine previously unknown gamma-ray pulsars in a blind search of data from the Fermi Large Area Telescope (LAT). The pulsars were found with a novel hierarchical search method originally developed for detecting continuous gravitational waves from rapidly rotating neutron stars. Designed to find isolated pulsars spinning at up to kHz frequencies, the new method is computationally efficient, and incorporates several advances, including a metric-based gridding of the search parameter space (frequency, frequency derivative and sky location) and the use of photon probability weights. The nine pulsars have spin frequencies between 3 and 12 Hz, and characteristic ages ranging from 17 kyr to 3 Myr. Two of them, PSRs J1803-2149 and J2111+4606, are young and energetic Galactic-plane pulsars (spin-down power above 6e35 erg/s and ages below 100 kyr). The seven remaining pulsars, PSRs J0106+4855, J0622+3749, J1620-4927, J1746-3239, J2028+3332, J2030+4415, J2139+4716, are older and less energetic; two of them are located at higher Galactic latitudes (|b| > 10 deg). PSR J0106+4855 has the largest characteristic age (3 Myr) and the smallest surface magnetic field (2e11 G) of all LAT blind-search pulsars. PSR J2139+4716 has the lowest spin-down power (3e33 erg/s) among all non-recycled gamma-ray pulsars ever found. Despite extensive multi-frequency observations, only PSR J0106+4855 has detectable pulsations in the radio band. The other eight pulsars belong to the increasing population of radio-quiet gamma-ray pulsars.

20 pages, 13 figures. Accepted for publication in the Astrophysical Journal

References in corpus (17)

• The ATNF Pulsar Catalogue
• TEMPO2, a new pulsar timing package. I: Overview
• Fermi Large Area Telescope Bright Gamma-ray Source List
• Detection of 16 Gamma-Ray Pulsars Through Blind Frequency Searches Using the Fermi LAT
• Precise Gamma-Ray Timing and Radio Observations of 17 Fermi Gamma-Ray Pulsars
• Three Millisecond Pulsars in FERMI LAT Unassociated Bright Sources
• The Electron Temperature Gradient in the Galactic Disk
• The Einstein@Home search for periodic gravitational waves in LIGO S4 data
• The Southern Galactic Plane Survey: Polarized Radio Continuum Observations and Analysis
• A Statistical Approach to Recognizing Source Classes for Unassociated Sources in the First Fermi-LAT Catalog
• Template-based searches for gravitational waves: efficient lattice covering of flat parameter spaces
• Exploiting Large-Scale Correlations to Detect Continuous Gravitational Waves
• Pulsar Discovery by Global Volunteer Computing
• Parameter-space metric of semicoherent searches for continuous gravitational waves
• Implementation of barycentric resampling for continuous wave searches in gravitational wave data
• Event Weighted Tests for Detecting Periodicity in Photon Arrival Times
• New 6cm and 11cm observations of the supernova remnant CTA 1

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