Data

Australia Telescope Compact Array observations for project C3654 semester 2025OCTS

Commonwealth Scientific and Industrial Research Organisation
Lee, Yu Wing Joshua ; Murphy, Tara ; Flynn, Chris ; Caleb, Manisha ; Zic, Andrew ; Dobie, Dougal ; Kaplan, David ; McSweeney, Samuel James ; Hurley-Walker, Natasha ; Wang, Yuanming ; Wang, Ziteng ; Anumarlapudi, Akash
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ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adc&rfr_id=info%3Asid%2FANDS&rft_id=https://data.csiro.au/collection/csiro:CASDA-ATOA-C3654-2025OCTS?tab=data DataDownload&rft.title=Australia Telescope Compact Array observations for project C3654 semester 2025OCTS&rft.identifier=https://data.csiro.au/collection/csiro:CASDA-ATOA-C3654-2025OCTS&rft.publisher=Commonwealth Scientific and Industrial Research Organisation&rft.description=We propose long-term monitoring of a newly discovered long-period radio transient, ASKAP J1839-0756. This source has a rotation period of 6.45 hours with emission characteristics reminiscent of typical pulsars. Due to its long period, only 30 pulses have been detected since its discovery on 2024-01-26, making accurate measurement of its spin-down rate difficult. By collecting more pulse times of arrival data in this observation, we aim to improve the upper limit of the period derivative by a factor of 8. The proposed observations will enable the estimation of key physical parameters such as spin-down luminosity and surface magnetic field and support studies of the evolution of pulse morphology and flux density.&rft.creator=Lee, Yu Wing Joshua &rft.creator=Murphy, Tara &rft.creator=Flynn, Chris &rft.creator=Caleb, Manisha &rft.creator=Zic, Andrew &rft.creator=Dobie, Dougal &rft.creator=Kaplan, David &rft.creator=McSweeney, Samuel James &rft.creator=Hurley-Walker, Natasha &rft.creator=Wang, Yuanming &rft.creator=Wang, Ziteng &rft.creator=Anumarlapudi, Akash &rft.date=2025&rft.edition=v1&rft_rights=Creative Commons Attribution 4.0 International Licence https://creativecommons.org/licenses/by/4.0/&rft_rights=Data is accessible online and may be reused in accordance with licence conditions&rft_rights=All Rights (including copyright) CSIRO 2025.&rft_subject=pulsars&rft_subject=neutron stars&rft_subject=transients&rft_subject=Astronomical sciences not elsewhere classified&rft_subject=Astronomical sciences&rft_subject=PHYSICAL SCIENCES&rft.type=dataset&rft.language=English Access the data
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Data is accessible online and may be reused in accordance with licence conditions

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We propose long-term monitoring of a newly discovered long-period radio transient, ASKAP J1839-0756. This source has a rotation period of 6.45 hours with emission characteristics reminiscent of typical pulsars. Due to its long period, only 30 pulses have been detected since its discovery on 2024-01-26, making accurate measurement of its spin-down rate difficult. By collecting more pulse times of arrival data in this observation, we aim to improve the upper limit of the period derivative by a factor of 8. The proposed observations will enable the estimation of key physical parameters such as spin-down luminosity and surface magnetic field and support studies of the evolution of pulse morphology and flux density.

Available: 2025-11-28

Data time period: 2025-10-01 to 2026-04-01

Subjects
Astronomical Sciences | Astronomical Sciences Not Elsewhere Classified | Physical Sciences | neutron stars | pulsars | transients |

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Identifiers
ACN 633 798 857