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Title: Constraints On The Emission Geometries And Spin Evolution Of Gamma-Ray Millisecond Pulsars

Journal Article · · The Astrophysical Journal. Supplement Series
 [1];  [2];  [3];  [4];  [5];  [6];  [7];  [8];  [3];  [5];  [9];  [10]
  1. National Academy of Sciences, Washington, DC (United States); Naval Research Lab. (NRL), Washington, DC (United States)
  2. North-West Univ., Potchefstroom (South Africa)
  3. NASA Goddard Space Flight Center (GSFC), Greenbelt, MD (United States)
  4. Laboratoire de Physique et Chimie de l'Environnement; Orleans (France); CNRS/IN2P3. Univ. Paris (France). Observatoire de Paris
  5. Univ. Bordeaux (France)
  6. Max-Planck-Institut für Radioastronomie, Bonn (Germany); Univ. of Manchester (United Kingdom)
  7. NASA Goddard Space Flight Center (GSFC), Greenbelt, MD (United States); Univ. of Maryland Baltimore County (UMBC), Baltimore, MD (United States)
  8. SLAC National Accelerator Lab., Menlo Park, CA (United States)
  9. Twitter Inc., San Francisco, CA (United States)
  10. Naval Research Lab. (NRL), Washington, DC (United States)

Millisecond pulsars (MSPs) are a growing class of gamma-ray emitters. Pulsed gamma-ray signals have been detected from more than 40 MSPs with the Fermi Large Area Telescope (LAT). The wider radio beams and more compact magnetospheres of MSPs enable studies of emission geometries over a broader range of phase space than non-recycled radio-loud gamma-ray pulsars. We have modeled the gamma-ray light curves of 40 LAT-detected MSPs using geometric emission models assuming a vacuum retarded-dipole magnetic eld. We modeled the radio pro les using a single-altitude hollow-cone beam, with a core component when indicated by polarimetry; however, for MSPs with gamma-ray and radio light curve peaks occurring at nearly the same rotational phase we assume that the radio emission is co-located with the gamma rays and caustic in nature. The best- t parameters and con dence intervals are determined using a maximum likelihood technique. We divide the light curves into three model classes, with gamma-ray peaks trailing (Class I), aligned (Class II) or leading (Class III) the radio peaks. Outer gap and slot gap (two-pole caustic) models best t roughly equal numbers of Class I and II, while Class III are exclusively t with pair-starved polar cap models. Distinguishing between the model classes based on typical derived parameters is diffcult. We explore the evolution of magnetic inclination angle with period and spin-down power, nding possible correlations. While the presence of signi cant off- peak emission can often be used as a discriminator between outer gap and slot gap models, a hybrid model may be needed.

Research Organization:
SLAC National Accelerator Lab., Menlo Park, CA (United States)
Sponsoring Organization:
USDOE
Grant/Contract Number:
AC02-76SF00515
OSTI ID:
1356470
Journal Information:
The Astrophysical Journal. Supplement Series, Vol. 213, Issue 1; ISSN 0067-0049
Publisher:
American Astronomical SocietyCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 61 works
Citation information provided by
Web of Science

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Cited By (34)

Three-Dimensional Non-Vacuum Pulsar Outer-Gap Model: Localized Acceleration Electric Field in the Higher Altitudes journal January 2015
Evidence for an intermediate-mass black hole in the globular cluster NGC 6624 journal February 2017
Radio emission of the Crab and Crab-like pulsars journal November 2018
Einstein@Home discovers a radio-quiet gamma-ray millisecond pulsar journal February 2018
The crab Pulsar at Centimeter Wavelengths. ii. Single Pulses journal December 2016
The Einstein@Home Gamma-Ray Pulsar Survey. i. Search Methods, Sensitivity, and Discovery of new Young Gamma-Ray Pulsars journal January 2017
Constraining Relativistic Bow Shock Properties in Rotation-powered Millisecond Pulsar Binaries journal April 2017
The Einstein@Home Gamma-ray Pulsar Survey. II. Source Selection, Spectral Analysis, and Multiwavelength Follow-up journal February 2018
Resonant Inverse Compton Scattering Spectra from Highly Magnetized Neutron Stars journal February 2018
Electron–Positron Pair Flow and Current Composition in the Pulsar Magnetosphere journal May 2018
Three-dimensional Kinetic Pulsar Magnetosphere Models: Connecting to Gamma-Ray Observations journal April 2018
Population Syntheses of Millisecond Pulsars from the Galactic Disk and Bulge journal August 2018
Pressure Balance and Intrabinary Shock Stability in Rotation-powered-state Redback and Transitional Millisecond Pulsar Binary Systems journal December 2018
The GMRT High-resolution Southern Sky Survey for Pulsars and Transients. II. New Discoveries, Timing, and Polarization Properties journal August 2019
A Millisecond Pulsar Discovery in a Survey of Unidentified Fermi γ -Ray Sources with LOFAR journal September 2017
Pulsar Radio Emission Mechanism: Radio Nanoshots as a Low-frequency Afterglow of Relativistic Magnetic Reconnection journal April 2019
Discovery of Soft X-Ray Pulsations from PSR J1231–1411 using NICER journal June 2019
A NICER View of PSR J0030+0451: Millisecond Pulsar Parameter Estimation journal December 2019
PSR J0030+0451 Mass and Radius from NICER Data and Implications for the Properties of Neutron Star Matter journal December 2019
A NICER View of PSR J0030+0451: Evidence for a Global-scale Multipolar Magnetic Field journal December 2019
Einstein@Home discovers a radio-quiet gamma-ray millisecond pulsar text January 2018
Parkes radio searches of Fermi gamma-ray sources and millisecond pulsar discoveries text January 2015
Measuring Neutron Star Radii via Pulse Profile Modeling with NICER text January 2015
The Crab Pulsar at Centimeter Wavelengths II: Single Pulses text January 2016
The Einstein@Home Gamma-ray Pulsar Survey. I. Search Methods, Sensitivity and Discovery of New Young Gamma-ray Pulsars text January 2016
Evidence for an intermediate-mass black hole in the globular cluster NGC 6624 text January 2017
The Einstein@Home Gamma-Ray Pulsar Survey II. Source Selection, Spectral Analysis and Multi-wavelength Follow-up text January 2017
Einstein@Home discovers a radio-quiet gamma-ray millisecond pulsar text January 2018
Population syntheses of millisecond pulsars from the Galactic Disk and Bulge text January 2018
Pressure Balance and Intrabinary Shock Stability in Rotation-Powered State Redback and Transitional Millisecond Pulsar Binary Systems text January 2018
Radio emission from the Crab and Crab-like pulsars text January 2018
Discovery of Soft X-ray Pulsations from PSR J1231-1411 using NICER text January 2019
The GMRT High Resolution Southern Sky Survey for pulsars and transients -II. New discoveries, timing and polarization properties text January 2019
PSR J0030+0451 Mass and Radius from NICER Data and Implications for the Properties of Neutron Star Matter text January 2019

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