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

Journal Article · Fri Sep 20 00:00:00 EDT 2013 · Astrophysical Journal Letters

DOI:https://doi.org/10.1088/2041-8205/775/1/L28· OSTI ID:22215440

Dowell, J.; Taylor, G. B.; Craig, J.; Henning, P. A.; Schinzel, F. ^[1]; Ray, P. S. ^[2]; Blythe, J. N. ^[3]; Clarke, T.; Helmboldt, J. F. ^[4]; Ellingson, S. W.; Wolfe, C. N. ^[5]; Lazio, T. J. W. ^[6]

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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)

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.

• OSTI ID: 22215440
• Journal Information: Astrophysical Journal Letters, Vol. 775, Issue 1; Other Information: Country of input: International Atomic Energy Agency (IAEA); ISSN 2041-8205
• Country of Publication: United States
• Language: English

Related Subjects

79 ASTROPHYSICS
COSMOLOGY AND ASTRONOMY
DETECTION
EMISSION
FLUX DENSITY
GHZ RANGE 01-100
MHZ RANGE
PULSARS
PULSES
SPECTRA
WAVELENGTHS