Properties of PSR J1023+0038 Based on Kepler, TESS, and FAST
The pulsar system PSR J1023+0038 is a very interesting binary with radio millisecond pulsar and low-mass X-ray binary transitions, which depend on the stellar accretion process. We have used Kepler light curves with 1 minute cadence and TESS light curves with 2 minute cadence to study the flare prop...
| Main Authors: | , , , , , , |
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| Format: | Article |
| Language: | English |
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IOP Publishing
2023-01-01
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| Series: | The Astrophysical Journal |
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| Online Access: | https://doi.org/10.3847/1538-4357/ad0841 |
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| author | Li-yun Zhang Zilu Yang Baoda Li Tianhao Su Prabhakar Misra Xianming L. Han Liu Long |
| author_facet | Li-yun Zhang Zilu Yang Baoda Li Tianhao Su Prabhakar Misra Xianming L. Han Liu Long |
| author_sort | Li-yun Zhang |
| collection | DOAJ |
| description | The pulsar system PSR J1023+0038 is a very interesting binary with radio millisecond pulsar and low-mass X-ray binary transitions, which depend on the stellar accretion process. We have used Kepler light curves with 1 minute cadence and TESS light curves with 2 minute cadence to study the flare properties of PSR J1023+0038. We detected 516 flare events in the K2 data and 84 flare events in the TESS survey data. We determined the flare rise and delay times, the flare durations and amplitudes, and flare energies. We obtained a value of the power-law index of 0.359 ± 0.023 between the flare energies and decay times, which is similar to the theoretically predicted value of 1/3. This in turn indicates that PSR J1023+0038 might be exhibiting physical mechanisms described by magnetic reconnection theory. Using the maximum likelihood estimation method, we also calculated the power-law index of the cumulative flare frequency distribution, finding 1.87 ± 0.27 for the Kepler data and 1.74 ± 0.29 for the TESS data. Meanwhile, we reduced six FAST observations of PSR J1023+0038 from 2019–2021 using a standard pulsar search procedure. We report that we detected a prompt signal with a period compatible with that found in previous observations of PSR J1023+0038. However, there are several reasons (statistical, excess DM, pulse shape, etc.) as to why the association is not likely. |
| first_indexed | 2024-03-08T22:01:11Z |
| format | Article |
| id | doaj.art-7c34a09343a6468aa7ad7339246657ef |
| institution | Directory Open Access Journal |
| issn | 1538-4357 |
| language | English |
| last_indexed | 2024-03-08T22:01:11Z |
| publishDate | 2023-01-01 |
| publisher | IOP Publishing |
| record_format | Article |
| series | The Astrophysical Journal |
| spelling | doaj.art-7c34a09343a6468aa7ad7339246657ef2023-12-19T14:38:24ZengIOP PublishingThe Astrophysical Journal1538-43572023-01-0196012010.3847/1538-4357/ad0841Properties of PSR J1023+0038 Based on Kepler, TESS, and FASTLi-yun Zhang0https://orcid.org/0000-0002-2394-9521Zilu Yang1https://orcid.org/0000-0002-8730-8643Baoda Li2Tianhao Su3https://orcid.org/0000-0002-1900-9289Prabhakar Misra4https://orcid.org/0000-0001-6843-7135Xianming L. Han5https://orcid.org/0000-0001-7638-0351Liu Long6https://orcid.org/0000-0003-2908-1492College of Physics, Guizhou University , Guiyang 550025, People’s Republic of China ; liy_zhang@hotmail.com; Guizhou Province Key Laboratory of Medium and Low Frequency Radio Astronomy Technology and Application , Guiyang 550025, People’s Republic of ChinaCollege of Physics, Guizhou University , Guiyang 550025, People’s Republic of China ; liy_zhang@hotmail.comCollege of Physics, Guizhou University , Guiyang 550025, People’s Republic of China ; liy_zhang@hotmail.comCollege of Physics, Guizhou University , Guiyang 550025, People’s Republic of China ; liy_zhang@hotmail.comDepartment of Physics and Astronomy, Howard University , Washington, DC 20059, USACollege of Physics, Guizhou University , Guiyang 550025, People’s Republic of China ; liy_zhang@hotmail.com; Dept. of Physics and Astronomy and SARA, Butler University , Indianapolis, IN 46208, USACollege of Physics, Guizhou University , Guiyang 550025, People’s Republic of China ; liy_zhang@hotmail.comThe pulsar system PSR J1023+0038 is a very interesting binary with radio millisecond pulsar and low-mass X-ray binary transitions, which depend on the stellar accretion process. We have used Kepler light curves with 1 minute cadence and TESS light curves with 2 minute cadence to study the flare properties of PSR J1023+0038. We detected 516 flare events in the K2 data and 84 flare events in the TESS survey data. We determined the flare rise and delay times, the flare durations and amplitudes, and flare energies. We obtained a value of the power-law index of 0.359 ± 0.023 between the flare energies and decay times, which is similar to the theoretically predicted value of 1/3. This in turn indicates that PSR J1023+0038 might be exhibiting physical mechanisms described by magnetic reconnection theory. Using the maximum likelihood estimation method, we also calculated the power-law index of the cumulative flare frequency distribution, finding 1.87 ± 0.27 for the Kepler data and 1.74 ± 0.29 for the TESS data. Meanwhile, we reduced six FAST observations of PSR J1023+0038 from 2019–2021 using a standard pulsar search procedure. We report that we detected a prompt signal with a period compatible with that found in previous observations of PSR J1023+0038. However, there are several reasons (statistical, excess DM, pulse shape, etc.) as to why the association is not likely.https://doi.org/10.3847/1538-4357/ad0841Stellar activityStellar flaresPulsars |
| spellingShingle | Li-yun Zhang Zilu Yang Baoda Li Tianhao Su Prabhakar Misra Xianming L. Han Liu Long Properties of PSR J1023+0038 Based on Kepler, TESS, and FAST The Astrophysical Journal Stellar activity Stellar flares Pulsars |
| title | Properties of PSR J1023+0038 Based on Kepler, TESS, and FAST |
| title_full | Properties of PSR J1023+0038 Based on Kepler, TESS, and FAST |
| title_fullStr | Properties of PSR J1023+0038 Based on Kepler, TESS, and FAST |
| title_full_unstemmed | Properties of PSR J1023+0038 Based on Kepler, TESS, and FAST |
| title_short | Properties of PSR J1023+0038 Based on Kepler, TESS, and FAST |
| title_sort | properties of psr j1023 0038 based on kepler tess and fast |
| topic | Stellar activity Stellar flares Pulsars |
| url | https://doi.org/10.3847/1538-4357/ad0841 |
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