The GBT 350-MHz Drift Scan Pulsar Survey. III. Detection of a magnetic field in the eclipsing material of PSR J2256-1024

Abstract

We present the first measurement of a non-zero magnetic field in the eclipsing material of a black widow pulsar. Black widows are millisecond pulsars which are ablating their companions; therefore they are often proposed as one potential source of isolated millisecond pulsars. PSR J2256-1024 is an eclipsing black widow discovered at radio wavelengths and later also observed in the X-ray and gamma parts of the spectrum. Here we present the radio timing solution for PSR J2256-1024, polarization profiles at 350, 820, and 1500~MHz and an investigation of changes in the polarization profile due to eclipsing material in the system. In the latter we find evidence of Faraday rotation in the linear polarization shortly after eclipse, measuring a rotation measure of 0.44(6) rad per meter squared and a corresponding line-of-sight magnetic field of 3.5(17) mG.

14 pages, 8 figures

References in corpus (8)

• The ATNF Pulsar Catalogue
• A New Electron Density Model for Estimation of Pulsar and FRB Distances
• PSRCHIVE and PSRFITS An Open Approach to Radio Pulsar Data Storage and Analysis
• A Radio Pulsar/X-ray Binary Link
• A Study of Multi-frequency Polarization Pulse Profiles of Millisecond Pulsars
• The Green Bank Telescope 350 MHz Drift-scan Survey II: Data Analysis and the Timing of 10 New Pulsars, Including a Relativistic Binary
• LOFAR discovery of the fastest-spinning millisecond pulsar in the Galactic field
• Gamma-ray Timing of Redback PSR J2339-0533: Hints for Gravitational Quadrupole Moment Changes

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• Timing of Eight Binary Millisecond Pulsars Found with Arecibo in Fermi-LAT Unidentified Sources
• Discovery of a New Redback Millisecond Pulsar Candidate: 4FGL J0940.3-7610
• Unusual Emission Variations Near the Eclipse of A Black Widow PSR J1720$-$0533
• Unraveling the Eclipse Mechanism of a Binary Millisecond Pulsar Using Broadband Radio Spectra
• Green Bank Telescope Discovery of the Redback Binary Millisecond Pulsar PSR J0212+5321
• Radio Millisecond pulsars
• Reciprocating Magnetic Fields in the Pulsar Wind Observed from the Black Widow Pulsar J1720-0534
• A census of galactic spider binary millisecond pulsars with the Nançay Radio Telescope
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• Ultra-wide Bandwidth Observations of 19 pulsars with Parkes telescope
• 50-250 MHz Pulsar Census with an SKA-Low prototype station: Spectra and Polarization