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Title: Toward an Empirical Theory of Pulsar Emission. XII. Exploring the Physical Conditions in Millisecond Pulsar Emission Regions

Abstract

The five-component profile of the 2.7 ms pulsar J0337+1715 appears to exhibit the best example to date of a core/double-cone emission-beam structure in a millisecond pulsar (MSP). Moreover, three other MSPs, the binary pulsars B1913+16, B1953+29, and J1022+1001, seem to exhibit core/single-cone profiles. These configurations are remarkable and important because it has not been clear whether MSPs and slow pulsars exhibit similar emission-beam configurations, given that they have considerably smaller magnetospheric sizes and magnetic field strengths. MSPs thus provide an extreme context for studying pulsar radio emission. Particle currents along the magnetic polar flux tube connect processes just above the polar cap through the radio-emission region to the light-cylinder and the external environment. In slow pulsars, radio-emission heights are typically about 500 km around where the magnetic field is nearly dipolar, and estimates of the physical conditions there point to radiation below the plasma frequency and emission from charged solitons by the curvature process. We are able to estimate emission heights for the four MSPs and carry out a similar estimation of physical conditions in their much lower emission regions. We find strong evidence that MSPs also radiate by curvature emission from charged solitons.

Authors:
;  [1]; ; ;  [2];  [3];  [4];  [5];  [6]
  1. Physics Department, University of Vermont, Burlington, VT 05405 (United States)
  2. Anton Pannekoek Institute for Astronomy, University of Amsterdam, Science Park 904, 1098 XH Amsterdam (Netherlands)
  3. National Radio Astronomy Observatory, Charlottesville, VA 29201 (United States)
  4. Physics Department, University of British Columbia, V6T 1Z4, BC (Canada)
  5. Institute for Radio Astronomy and Space Research, Auckland University of Technology, Auckland 1142 (New Zealand)
  6. Physics and Astronomy Department, Carleton College, Northfield, MN 55057 (United States)
Publication Date:
OSTI Identifier:
22663279
Resource Type:
Journal Article
Resource Relation:
Journal Name: Astrophysical Journal; Journal Volume: 845; Journal Issue: 1; Other Information: Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
79 ASTROPHYSICS, COSMOLOGY AND ASTRONOMY; CONFIGURATION; EMISSION; LANGMUIR FREQUENCY; MAGNETIC FIELDS; PARTICLES; PLASMA; PULSARS; VISIBLE RADIATION

Citation Formats

Rankin, Joanna M., Mitra, Dipanjan, Archibald, Anne, Hessels, Jason, Leeuwen, Joeri van, Ransom, Scott, Stairs, Ingrid, Straten, Willem van, and Weisberg, Joel M., E-mail: Joanna.Rankin@uvm.edu. Toward an Empirical Theory of Pulsar Emission. XII. Exploring the Physical Conditions in Millisecond Pulsar Emission Regions. United States: N. p., 2017. Web. doi:10.3847/1538-4357/AA7B73.
Rankin, Joanna M., Mitra, Dipanjan, Archibald, Anne, Hessels, Jason, Leeuwen, Joeri van, Ransom, Scott, Stairs, Ingrid, Straten, Willem van, & Weisberg, Joel M., E-mail: Joanna.Rankin@uvm.edu. Toward an Empirical Theory of Pulsar Emission. XII. Exploring the Physical Conditions in Millisecond Pulsar Emission Regions. United States. doi:10.3847/1538-4357/AA7B73.
Rankin, Joanna M., Mitra, Dipanjan, Archibald, Anne, Hessels, Jason, Leeuwen, Joeri van, Ransom, Scott, Stairs, Ingrid, Straten, Willem van, and Weisberg, Joel M., E-mail: Joanna.Rankin@uvm.edu. Thu . "Toward an Empirical Theory of Pulsar Emission. XII. Exploring the Physical Conditions in Millisecond Pulsar Emission Regions". United States. doi:10.3847/1538-4357/AA7B73.
@article{osti_22663279,
title = {Toward an Empirical Theory of Pulsar Emission. XII. Exploring the Physical Conditions in Millisecond Pulsar Emission Regions},
author = {Rankin, Joanna M. and Mitra, Dipanjan and Archibald, Anne and Hessels, Jason and Leeuwen, Joeri van and Ransom, Scott and Stairs, Ingrid and Straten, Willem van and Weisberg, Joel M., E-mail: Joanna.Rankin@uvm.edu},
abstractNote = {The five-component profile of the 2.7 ms pulsar J0337+1715 appears to exhibit the best example to date of a core/double-cone emission-beam structure in a millisecond pulsar (MSP). Moreover, three other MSPs, the binary pulsars B1913+16, B1953+29, and J1022+1001, seem to exhibit core/single-cone profiles. These configurations are remarkable and important because it has not been clear whether MSPs and slow pulsars exhibit similar emission-beam configurations, given that they have considerably smaller magnetospheric sizes and magnetic field strengths. MSPs thus provide an extreme context for studying pulsar radio emission. Particle currents along the magnetic polar flux tube connect processes just above the polar cap through the radio-emission region to the light-cylinder and the external environment. In slow pulsars, radio-emission heights are typically about 500 km around where the magnetic field is nearly dipolar, and estimates of the physical conditions there point to radiation below the plasma frequency and emission from charged solitons by the curvature process. We are able to estimate emission heights for the four MSPs and carry out a similar estimation of physical conditions in their much lower emission regions. We find strong evidence that MSPs also radiate by curvature emission from charged solitons.},
doi = {10.3847/1538-4357/AA7B73},
journal = {Astrophysical Journal},
number = 1,
volume = 845,
place = {United States},
year = {Thu Aug 10 00:00:00 EDT 2017},
month = {Thu Aug 10 00:00:00 EDT 2017}
}