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Title: RADIO DETECTION OF THE FERMI-LAT BLIND SEARCH MILLISECOND PULSAR J1311-3430

Abstract

We report the detection of radio emission from PSR J1311-3430, the first millisecond pulsar (MSP) discovered in a blind search of Fermi Large Area Telescope (LAT) gamma-ray data. We detected radio pulsations at 2 GHz, visible for <10% of {approx}4.5 hr of observations using the Green Bank Telescope (GBT). Observations at 5 GHz with the GBT and at several lower frequencies with Parkes, Nancay, and the Giant Metrewave Radio Telescope resulted in non-detections. We also report the faint detection of a steep spectrum continuum radio source (0.1 mJy at 5 GHz) in interferometric imaging observations with the Jansky Very Large Array. These detections demonstrate that PSR J1311-3430 is not radio quiet and provide additional evidence that radio-quiet MSPs are rare. The radio dispersion measure of 37.8 pc cm{sup -3} provides a distance estimate of 1.4 kpc for the system, yielding a gamma-ray efficiency of 30%, typical of LAT-detected MSPs. We see apparent excess delay in the radio pulses as the pulsar appears from eclipse and we speculate on possible mechanisms for the non-detections of the pulse at other orbital phases and observing frequencies.

Authors:
;  [1];  [2];  [3];  [4];  [5];  [6];  [7];  [8]; ;  [9];  [10]; ;  [11]; ;  [12];  [13];  [14]
  1. Space Science Division, Naval Research Laboratory, Washington, DC 20375-5352 (United States)
  2. National Radio Astronomy Observatory (NRAO), Charlottesville, VA 22903 (United States)
  3. National Academy of Sciences, Washington, DC 20001 (United States)
  4. INAF Istituto di Radioastronomia, I-40129 Bologna (Italy)
  5. Laboratoire de Physique et Chimie de l'Environnement, LPCE UMR 6115 CNRS, F-45071 Orleans Cedex 02 (France)
  6. Columbia Astrophysics Laboratory, Columbia University, New York, NY 10027 (United States)
  7. Inter-University Centre for Astronomy and Astrophysics, Pune 411 007 (India)
  8. National Centre for Radio Astrophysics, Tata Institute of Fundamental Research, Pune 411 007 (India)
  9. W. W. Hansen Experimental Physics Laboratory, Kavli Institute for Particle Astrophysics and Cosmology, Department of Physics and SLAC National Accelerator Laboratory, Stanford University, Stanford, CA 94305 (United States)
  10. NASA Goddard Space Flight Center, Greenbelt, MD 20771 (United States)
  11. Max-Planck-Institut fuer Radioastronomie, Auf dem Huegel 69, D-53121 Bonn (Germany)
  12. CSIRO Astronomy and Space Science, Australia Telescope National Facility, Epping NSW 1710 (Australia)
  13. Max-Planck-Institut fuer Gravitationsphysik, Albert-Einstein-Institut, D-30167 Hannover (Germany)
  14. Santa Cruz Institute for Particle Physics, Department of Physics and Department of Astronomy and Astrophysics, University of California at Santa Cruz, Santa Cruz, CA 95064 (United States)
Publication Date:
OSTI Identifier:
22078321
Resource Type:
Journal Article
Resource Relation:
Journal Name: Astrophysical Journal Letters; Journal Volume: 763; 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; DETECTION; ECLIPSE; EFFICIENCY; EMISSION; GAMMA RADIATION; GHZ RANGE; PULSARS; PULSATIONS; PULSES; RADIO TELESCOPES; RADIOWAVE RADIATION; SPECTRA

Citation Formats

Ray, P. S., Wood, K. S., Ransom, S. M., Cheung, C. C., Giroletti, M., Cognard, I., Camilo, F., Bhattacharyya, B., Roy, J., Romani, R. W., Kerr, M., Ferrara, E. C., Guillemot, L., Kramer, M., Johnston, S., Keith, M., Pletsch, H. J., and Saz Parkinson, P. M., E-mail: Paul.Ray@nrl.navy.mil. RADIO DETECTION OF THE FERMI-LAT BLIND SEARCH MILLISECOND PULSAR J1311-3430. United States: N. p., 2013. Web. doi:10.1088/2041-8205/763/1/L13.
Ray, P. S., Wood, K. S., Ransom, S. M., Cheung, C. C., Giroletti, M., Cognard, I., Camilo, F., Bhattacharyya, B., Roy, J., Romani, R. W., Kerr, M., Ferrara, E. C., Guillemot, L., Kramer, M., Johnston, S., Keith, M., Pletsch, H. J., & Saz Parkinson, P. M., E-mail: Paul.Ray@nrl.navy.mil. RADIO DETECTION OF THE FERMI-LAT BLIND SEARCH MILLISECOND PULSAR J1311-3430. United States. doi:10.1088/2041-8205/763/1/L13.
Ray, P. S., Wood, K. S., Ransom, S. M., Cheung, C. C., Giroletti, M., Cognard, I., Camilo, F., Bhattacharyya, B., Roy, J., Romani, R. W., Kerr, M., Ferrara, E. C., Guillemot, L., Kramer, M., Johnston, S., Keith, M., Pletsch, H. J., and Saz Parkinson, P. M., E-mail: Paul.Ray@nrl.navy.mil. Sun . "RADIO DETECTION OF THE FERMI-LAT BLIND SEARCH MILLISECOND PULSAR J1311-3430". United States. doi:10.1088/2041-8205/763/1/L13.
@article{osti_22078321,
title = {RADIO DETECTION OF THE FERMI-LAT BLIND SEARCH MILLISECOND PULSAR J1311-3430},
author = {Ray, P. S. and Wood, K. S. and Ransom, S. M. and Cheung, C. C. and Giroletti, M. and Cognard, I. and Camilo, F. and Bhattacharyya, B. and Roy, J. and Romani, R. W. and Kerr, M. and Ferrara, E. C. and Guillemot, L. and Kramer, M. and Johnston, S. and Keith, M. and Pletsch, H. J. and Saz Parkinson, P. M., E-mail: Paul.Ray@nrl.navy.mil},
abstractNote = {We report the detection of radio emission from PSR J1311-3430, the first millisecond pulsar (MSP) discovered in a blind search of Fermi Large Area Telescope (LAT) gamma-ray data. We detected radio pulsations at 2 GHz, visible for <10% of {approx}4.5 hr of observations using the Green Bank Telescope (GBT). Observations at 5 GHz with the GBT and at several lower frequencies with Parkes, Nancay, and the Giant Metrewave Radio Telescope resulted in non-detections. We also report the faint detection of a steep spectrum continuum radio source (0.1 mJy at 5 GHz) in interferometric imaging observations with the Jansky Very Large Array. These detections demonstrate that PSR J1311-3430 is not radio quiet and provide additional evidence that radio-quiet MSPs are rare. The radio dispersion measure of 37.8 pc cm{sup -3} provides a distance estimate of 1.4 kpc for the system, yielding a gamma-ray efficiency of 30%, typical of LAT-detected MSPs. We see apparent excess delay in the radio pulses as the pulsar appears from eclipse and we speculate on possible mechanisms for the non-detections of the pulse at other orbital phases and observing frequencies.},
doi = {10.1088/2041-8205/763/1/L13},
journal = {Astrophysical Journal Letters},
number = 1,
volume = 763,
place = {United States},
year = {Sun Jan 20 00:00:00 EST 2013},
month = {Sun Jan 20 00:00:00 EST 2013}
}