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Spin-down rate of the transitional millisecond pulsar PSR J1023+0038 in the optical band with Aqueye+

Journal
Date Issued
2020
Author(s)
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DOI
Abstract
We present a timing analysis of the transitional millisecond pulsar PSR J1023+0038 using observations taken between January 2018 and January 2020 with the high time resolution photon counter Aqueye+ mounted at the 1.82 m Copernicus telescope in Asiago. We report the first measurement of the timing solution and the frequency derivative of PSR J1023+0038 based entirely on optical data. The spin-down rate of the pulsar is ( - 2.53 ± 0.04) × 10-15 Hz2, which is ∼20% slower than that measured from the X-ray observations taken in 2013-2016 and ∼5% faster than that measured in the radio band during the rotation-powered state.
Volume
498
Issue
1
Start page
L98
Uri
Url
Issn Identifier
1745-3925
Ads BibCode
2020MNRAS.498L..98B
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open.access
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