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arXiv · 1309.0558

Detection and Flux Density Measurements of the Millisecond Pulsar J2145-0750 below 100 MHz

J. Dowell·P. S. Ray·G. B. Taylor·J. N. Blythe·T. Clarke·J. Craig·S. W. Ellingson·J. F. Helmboldt·P. A. Henning·T. J. W. Lazio·F. Schinzel·K. Stovall·C. N. Wolfe
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Abstract

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.

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J. Dowell, P. S. Ray, G. B. Taylor, J. N. Blythe, T. Clarke, J. Craig, S. W. Ellingson, J. F. Helmboldt, P. A. Henning, T. J. W. Lazio, F. Schinzel, K. Stovall, C. N. Wolfe. 2013-09-11. Detection and Flux Density Measurements of the Millisecond Pulsar J2145-0750 below 100 MHz. https://doi.org/10.1088/2041-8205%2F775%2F1%2Fl28

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