Radio and Gamma-ray Pulsed Emission from Millisecond Pulsars

Abstract

Pulsed gamma-ray emission from millisecond pulsars (MSPs) has been detected by the sensitive Fermi, which sheds light on studies of the emission region and mechanism. In particular, the specific patterns of radio and gamma-ray emission from PSR J0101-6422 challenge the popular pulsar models, e.g. outer gap and two-pole caustic (TPC) models. Using the three dimension (3D) annular gap model, we have jointly simulated radio and gamma-ray light curves for three representative MSPs (PSR J0034-0534, PSR J0101-6422 and PSR J0437-4715) with distinct radio phase lags and present the best simulated results for these MSPs, particularly for PSR J0101-6422 with complex radio and gamma-ray pulse profiles and for PSR J0437-4715 with a radio interpulse. It is found that both the gamma-ray and radio emission originate from the annular gap region located in only one magnetic pole, and the radio emission region is not primarily lower than the gamma-ray region in most cases. In addition, the annular gap model with a small magnetic inclination angle instead of "orthogonal rotator" can account for MSPs' radio interpulse with a large phase separation from the main pulse. The annular gap model is a self-consistent model not only for young pulsars but also MSPs, and multi-wavelength light curves can be fundamentally explained by this model.

Accepted for publication in The Astrophysical Journal; 6 pages, 4 figures

References in corpus (12)

• TEMPO2, a new pulsar timing package. I: Overview
• High-Altitude Emission from Pulsar Slot Gaps: The Crab Pulsar
• Constraints on Neutron Star Properties from X-ray Observations of Millisecond Pulsars
• A model for the waveform behavior of accreting millisecond pulsars: Nearly aligned magnetic fields and moving emission regions
• Fermi-LAT Search for Pulsar Wind Nebulae around gamma-ray Pulsars
• Pulsed Gamma Rays from the Original Millisecond and Black Widow Pulsars: a case for Caustic Radio Emission?
• Five New Millisecond Pulsars From a Radio Survey of 14 Unidentified Fermi-LAT Gamma-ray Sources
• Radio-to-TeV Phase-resolved Emission from the Crab Pulsar: The Annular Gap Model
• The annular gap model for gamma-ray emission from young and millisecond pulsars
• Gamma-ray Emission from the Vela Pulsar Modeled with the Annular Gap and Core Gap
• Formation of Sub-millisecond Pulsars and Possibility of Detection
• Modeling the Pulse Profiles of Millisecond Pulsars in the Second LAT Catalog of gamma-ray Pulsars

Cited by in corpus (8)

• Constraints on the Emission Geometries and Spin Evolution of Gamma-ray Millisecond Pulsars
• Pulsar gamma-ray emission in the radiation reaction regime
• Very Long Baseline Interferometry Measured Proper Motion and Parallax of the $\gamma$-ray Millisecond Pulsar PSR J0218+4232
• Investigating multi-frequency pulse profiles of PSRs B0329+54 and B1642-03 in an inverse Compton scattering (ICS) model
• The Emission Physics of Millisecond Pulsars
• Phase-Averaged Gamma-Ray Spectra from MSPs
• Modeling Multi-wavelength Pulse Profiles of Millisecond Pulsar PSR B1821-24
• Frequency resolved radio and high-energy emission of pulsars