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Title: Radio Detection of the FERMI-LAT Blind Search Millisecond Pulsar J1311–3430

In this article, 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 ~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, Nançay, 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 –3 provides a distance estimate of 1.4 kpc for the system, yielding a gamma-ray efficiency of 30%, typical of LAT-detected MSPs. Lastly, 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:
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Publication Date:
Grant/Contract Number:
AC02-76SF00515
Type:
Accepted Manuscript
Journal Name:
Astrophysical Journal Letters
Additional Journal Information:
Journal Volume: 763; Journal Issue: 1; Journal ID: ISSN 2041-8205
Publisher:
Institute of Physics (IOP)
Research Org:
SLAC National Accelerator Lab., Menlo Park, CA (United States)
Sponsoring Org:
USDOE
Contributing Orgs:
Fermi-LAT Collaboration
Country of Publication:
United States
Language:
English
Subject:
79 ASTRONOMY AND ASTROPHYSICS; pulsars: individual (PSR J1311−3430)
OSTI Identifier:
1356603

Ray, P. S., Ransom, S. M., Cheung, C. C., Giroletti, M., Cognard, I., Camilo, F., Bhattacharyya, B., Roy, J., Romani, R. W., Ferrara, E. C., Guillemot, L., Johnston, S., Keith, M., Kerr, M., Kramer, M., Pletsch, H. J., Saz Parkinson, P. M., and Wood, K. S.. Radio Detection of the FERMI-LAT Blind Search Millisecond Pulsar J1311–3430. United States: N. p., Web. doi:10.1088/2041-8205/763/1/L13.
Ray, P. S., Ransom, S. M., Cheung, C. C., Giroletti, M., Cognard, I., Camilo, F., Bhattacharyya, B., Roy, J., Romani, R. W., Ferrara, E. C., Guillemot, L., Johnston, S., Keith, M., Kerr, M., Kramer, M., Pletsch, H. J., Saz Parkinson, P. M., & Wood, K. S.. 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., Ransom, S. M., Cheung, C. C., Giroletti, M., Cognard, I., Camilo, F., Bhattacharyya, B., Roy, J., Romani, R. W., Ferrara, E. C., Guillemot, L., Johnston, S., Keith, M., Kerr, M., Kramer, M., Pletsch, H. J., Saz Parkinson, P. M., and Wood, K. S.. 2013. "Radio Detection of the FERMI-LAT Blind Search Millisecond Pulsar J1311–3430". United States. doi:10.1088/2041-8205/763/1/L13. https://www.osti.gov/servlets/purl/1356603.
@article{osti_1356603,
title = {Radio Detection of the FERMI-LAT Blind Search Millisecond Pulsar J1311–3430},
author = {Ray, P. 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 Ferrara, E. C. and Guillemot, L. and Johnston, S. and Keith, M. and Kerr, M. and Kramer, M. and Pletsch, H. J. and Saz Parkinson, P. M. and Wood, K. S.},
abstractNote = {In this article, 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 ~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, Nançay, 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–3 provides a distance estimate of 1.4 kpc for the system, yielding a gamma-ray efficiency of 30%, typical of LAT-detected MSPs. Lastly, 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 = {2013},
month = {1}
}