Published September 1, 2016 | Version v1
Journal article Metadata-only

THE DISTURBANCE OF A MILLISECOND PULSAR MAGNETOSPHERE

Creators

  • 1. CSIRO Astronomy and Space Science, Australia Telescope National Facility, Box 76, Epping, NSW 1710 (Australia)
  • 2. Astrophysics Group, Cavendish Laboratory, JJ Thomson Avenue, Cambridge CB3 0HE (United Kingdom)
  • 3. Centre for Astrophysics and Supercomputing, Swinburne University of Technology, P.O. Box 218, Hawthorn, VIC 3122 (Australia)
  • 4. International Centre for Radio Astronomy Research, Curtin University, Bentley, WA 6102 (Australia)
  • 5. Department of Electrical and Computer Engineering, University of California, San Diego, La Jolla, CA 92093 (United States)
  • 6. CSIRO Information Management and Technology, Box 225, Dickson, ACT 2602 (Australia)
  • 7. Jodrell Bank Centre for Astrophysics, University of Manchester, M13 9PL (United Kingdom)
  • 8. Monash Centre for Astrophysics, School of Physics and Astronomy, Monash University, VIC 3800 (Australia)
  • 9. Cahill Center for Astronomy and Astrophysics, California Institute of Technology, MC 249-17, Pasadena, CA 91125 (United States)
  • 10. Department of Physics, University of Wisconsin-Milwaukee, Box 413, Milwaukee, WI 53201 (United States)

Description

Pulsar timing has enabled some of the strongest tests of fundamental physics. Central to the technique is the assumption that the detected radio pulses can be used to accurately measure the rotation of the pulsar. Here, we report on a broadband variation in the pulse profile of the millisecond pulsar J1643−1224. A new component of emission suddenly appears in the pulse profile, decays over four months, and results in a permanently modified pulse shape. Profile variations such as these may be the origin of timing noise observed in other millisecond pulsars. The sensitivity of pulsar-timing observations to gravitational radiation can be increased by accounting for this variability.

Availability note (English)

Available from http://dx.doi.org/10.3847/2041-8205/828/1/L1

Additional details

Identifiers

DOI
10.3847/2041-8205/828/1/L1;

Publishing Information

Journal Title
Astrophysical Journal Letters
Journal Volume
828
Journal Issue
1
Journal Page Range
[6 p.]
ISSN
2041-8205

INIS

Country of Publication
United States
Country of Input or Organization
International Atomic Energy Agency (IAEA)
INIS RN
48103151
Subject category
S79: ASTROPHYSICS, COSMOLOGY AND ASTRONOMY;
Descriptors DEI
ACCOUNTING; DECAY; DISTURBANCES; EMISSION; GRAVITATIONAL RADIATION; PULSARS; PULSE SHAPERS; PULSES; ROTATION; SENSITIVITY; STARS
Descriptors DEC
COSMIC RADIO SOURCES; ELECTRONIC CIRCUITS; MOTION; PULSE CIRCUITS; RADIATIONS; SIGNAL CONDITIONERS