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Tang, S, Kaplan, DL, Phinney, ES, Prince, TA, Breton, RP, Bellm, E, Bildsten, L, Cao, Y, Kong, AKH, Perley, DA, Sesar, B, Wolf, WM and Yen, TC (2014) Identification of the optical counterpart of fermi black widow millisecond pulsar PSR J1544+4937. The Astrophysical Journal Letters, 791 (1). ISSN 2041-8205
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Abstract
We report the optical identification of the companion to the Fermi black widow millisecond pulsar PSR J1544+4937. We find a highly variable source on Keck Low Resolution Imaging Spectrometer images at the nominal pulsar position, with 2 mag variations over orbital period in the B, g, R, and I bands. The nearly achromatic light curves are difficult to explain with a simply irradiated hemisphere model, and suggest that the optical emission is dominated by a nearly isothermal hot patch on the surface of the companion facing the pulsar. We roughly constrain the distance to PSR J1544+4937 to be between 2 and 5 kpc. A more reliable distance measurement is needed in order to constrain the composition of the companion. © 2014. The American Astronomical Society. All rights reserved.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | 0201 Astronomical And Space Sciences |
| Subjects: | Q Science > QB Astronomy Q Science > QC Physics Q Science > QD Chemistry |
| Divisions: | Astrophysics Research Institute |
| Publisher: | American Astronomical Society |
| Date Deposited: | 23 May 2017 09:36 |
| Last Modified: | 17 May 2022 14:43 |
| DOI or ID number: | 10.1088/2041-8205/791/1/L5 |
| URI: | https://researchonline.ljmu.ac.uk/id/eprint/6494 |
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