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Title: DETECTION AND FLUX DENSITY MEASUREMENTS OF THE MILLISECOND PULSAR J2145–0750 BELOW 100 MHz

We present flux density measurements and pulse profiles for the millisecond pulsar PSR J2145–0750 spanning 37 to 81 MHz using data obtained from the first station of the Long Wavelength Array. These measurements represent the lowest frequency detection of pulsed emission from a millisecond pulsar to date. We find that the pulse profile is similar to that observed at 102 MHz. We also find that the flux density spectrum between ≈40 MHz to 5 GHz is suggestive of a break and may be better fit by a model that includes spectral curvature with a rollover around 730 MHz rather than a single power law.
Authors:
; ; ; ;  [1] ;  [2] ;  [3] ; ;  [4] ; ;  [5] ;  [6] ;  [7]
  1. Department of Physics and Astronomy, University of New Mexico, Albuquerque, NM 87131 (United States)
  2. Space Science Division, Naval Research Laboratory, Washington, DC 20375 (United States)
  3. School of Physics, Georgia Institute of Technology, Atlanta, GA 3033 (United States)
  4. U.S. Naval Research Laboratory, Washington, DC 20375 (United States)
  5. Bradley Department of Electrical and Computer Engineering, Virginia Tech, Blacksburg, VA 24061 (United States)
  6. Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA 91109 (United States)
  7. Center for Gravitational Wave Astronomy and Department of Physics and Astronomy, University of Texas at Brownsville, Brownsville, TX 78520 (United States)
Publication Date:
OSTI Identifier:
22215440
Resource Type:
Journal Article
Resource Relation:
Journal Name: Astrophysical Journal Letters; Journal Volume: 775; 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; EMISSION; FLUX DENSITY; GHZ RANGE 01-100; MHZ RANGE; PULSARS; PULSES; SPECTRA; WAVELENGTHS