Search for Optical Pulsation in M82 X-2

We report on a search for optical pulsation from M82 X-2 over a range of periods. M82 X-2 is an X-ray pulsar with a 1.37s average spin period and a 2.5 day sinusoidal modulation. The observations were done with the ARray Camera for Optical to Near-IR Spectrophotometry at the 200 inch Hale telescope...

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Bibliographic Details
Published inThe Astrophysical journal Vol. 850; no. 1; pp. 65 - 68
Main Authors Collura, G., Strader, P., Meeker, S. R., Szypryt, P., Walter, A. B., Bockstiegel, C., Mazin, B. A., Prince, T. A.
Format Journal Article
LanguageEnglish
Published Philadelphia The American Astronomical Society 20.11.2017
IOP Publishing
Subjects
Astrophysics
Emissions control
Pulsars
pulsars: general
pulsars: individual (M82 X-2)
Pulsation
Spectrophotometry
stars: neutron
Statistical analysis
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Summary:We report on a search for optical pulsation from M82 X-2 over a range of periods. M82 X-2 is an X-ray pulsar with a 1.37s average spin period and a 2.5 day sinusoidal modulation. The observations were done with the ARray Camera for Optical to Near-IR Spectrophotometry at the 200 inch Hale telescope at the Palomar Observatory. We performed H test and χ2 statistical analysis. No significant optical pulsations were found in the wavelength range of 3000-11000 with a pulsation period between 1.36262 and 1.37462 s. We found an upper limit on pulsed emission in the 4000-8000 wavelength range to be fainter than ∼20.5 magAB, corresponding to ∼23 Jy.
Bibliography:High-Energy Phenomena and Fundamental Physics
AAS06624
ISSN:0004-637X
1538-4357
DOI:10.3847/1538-4357/aa93d8