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http://hdl.handle.net/20.500.12386/30506
Titolo: | Precise optical timing of PSR J1023+0038, the first millisecond pulsar detected with Aqueye+ in Asiago | Autori: | ZAMPIERI, Luca BURTOVOI, ALEKSANDR FIORI, MICHELE Naletto, Giampiero SPOLON, ALESSIA Barbieri, Cesare PAPITTO, ALESSANDRO AMBROSINO, Filippo |
Data pubblicazione: | 2019 | Rivista: | MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY | Numero: | 485 | Fascicolo: | 1 | Da pagina:: | L109 | Abstract: | We report the first detection of an optical millisecond pulsar with the fast photon counter Aqueye+ in Asiago. This is an independent confirmation of the detection of millisecond pulsations from PSR J1023+0038 obtained with SiFAP at the Telescopio Nazionale Galileo. We observed the transitional millisecond pulsar PSR J1023+0038 with Aqueye+ mounted at the Copernicus telescope in 2018 January. Highly significant pulsations were detected. The rotational period is in agreement with the value extrapolated from the X-ray ephemeris, while the time of passage at the ascending node is shifted by 11.55 ± 0.08 s from the value predicted using the orbital period from the X-rays. An independent optical timing solution is derived over a baseline of a few days that has an accuracy of ∼0.007 in pulse phase (∼12 μs in time). This level of precision is needed to derive an accurate coherent timing solution for the pulsar and to search for possible phase shifts between the optical and X-ray pulses using future simultaneous X-ray and optical observations. | URI: | http://hdl.handle.net/20.500.12386/30506 | URL: | http://arxiv.org/abs/1903.08930v1 https://academic.oup.com/mnrasl/article/485/1/L109/5420503 |
ISSN: | 0035-8711 | DOI: | 10.1093/mnrasl/slz043 | Bibcode ADS: | 2019MNRAS.485L.109Z | Fulltext: | open |
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