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Showing results for: [ Zhang, Lei ]
The Parkes Pulsar Timing Array (PPTA) project has three primary goals: (a) detection of gravitational waves from astronomical sources, (b) establishment of a pulsar timescale, and (c) improvement of o... moreur understanding of Solar-system dynamics. The PPTA is the oldest of three international pulsar timing groups. We have the smallest telescope and the smallest group, but the best measurements and the best results. Our bound on the strength of the incoherent gravitational wave background is the only bound which significantly constrains theoretical models. We have maintained our leading position because: we have the southern sky; we have a small but well-focussed group; we have the best-calibrated receivers; and we have been able to observe with an almost regular cadence of 15 to 20 days over a wide bandwidth. With this proposal we aim to maintain our pre-eminent position in the field. Unlike most observing proposals, this is a continuing proposal for which the observations will continue to improve bounds on ultra-low-frequency gravitational waves until they are finally detected. Continued Parkes observations will remain valuable at least until the first stage of the SKA is able to improve on our sensitivity and observing cadence. Even after the gravitational wave background is detected we will want to continue observations in support of the nascent field of gravitational wave astronomy!less
Australia Telescope National Facility - P456 - A millisecond pulsar timing array - Published 17 Feb 2020
We propose observations with the ultra-wide-bandwidth, low frequency receiver (UWL) installed at the Parkes telescope to carry out the first well-calibrated coherent de-dispersed search for pulsars in... more 47 Tucanae. The proposed observation could result in new pulsars and also provide the firstly detailed study of the calibration and polarisation properties for previously known pulsars.less
Australia Telescope National Facility - P1022 - The first well-calibrated, coherent de-dispersed search for pulsars in 47 Tucanae - Published 16 Feb 2020
Australia Telescope National Facility - P1022 - The first well-calibrated, coherent de-dispersed search for pulsars in 47 Tucanae - Published 15 Feb 2020
Australia Telescope National Facility - P1022 - The first well-calibrated, coherent de-dispersed search for pulsars in 47 Tucanae - Published 14 Feb 2020
Australia Telescope National Facility - P1022 - The first well-calibrated, coherent de-dispersed search for pulsars in 47 Tucanae - Published 12 Feb 2020
We propose to continue the PULSE@Parkes project in which high school students from Australia and around the World use the Parkes radio telescope in a remote observing model to observe and analyse puls... morear data. The data from some PULSE@Parkes observations are used to support the FERMI Gamma ray mission, other observations supplement the P456 Pulsar Timing Array project and the remainder were chosen in order to make a detailed analysis of pulsar timing irregularities and intermittency.less
Australia Telescope National Facility - P595 - PULSE@Parkes (Pulsar Student Exploration at Parkes) - Published 03 Feb 2020
Australia Telescope National Facility - P1022 - The first well-calibrated, coherent de-dispersed search for pulsars in 47 Tucanae - Published 01 Feb 2020
Australia Telescope National Facility - P1022 - The first well-calibrated, coherent de-dispersed search for pulsars in 47 Tucanae - Published 19 Jan 2020
Australia Telescope National Facility - P1022 - The first well-calibrated, coherent de-dispersed search for pulsars in 47 Tucanae - Published 16 Jan 2020
This proposal relates to time purchased by the Chinese Academy of Sciences for Parkes follow-up confirmation and timing of FAST discoveries. As the observing time has been purchased this proposal (an... mored the related PX500) does not require TAC grading. The primary reason for submitting a proposal is to ensure an outreach statement and that the proposal is entered into OPAL for the data archive to access. The Chinese team have two time requests. The time scheduled for the first (PX500) will be allocated in blocks of 24 hours and the data will become available in the data archive with an 18 month embargo period. The second type of time (relating to this proposal) will be scheduled in shorter blocks and the data archived with a 10 year embargo.less
Australia Telescope National Facility - PX501 - FAST: category 2 purchased time - Published 15 Jan 2020
Australia Telescope National Facility - P1022 - The first well-calibrated, coherent de-dispersed search for pulsars in 47 Tucanae - Published 10 Jan 2020
Australia Telescope National Facility - P1022 - The first well-calibrated, coherent de-dispersed search for pulsars in 47 Tucanae - Published 09 Jan 2020
This proposal relates to time purchased by the Chinese Academy of Sciences for Parkes follow-up confirmation and timing of FAST discoveries. As the observing time has been purchased this proposal (an... mored the related PX501) does not require TAC grading. The primary reason for submitting a proposal is to ensure an outreach statement and that the proposal is entered into OPAL for the data archive to access. The Chinese team have two time requests. The time scheduled for the first, relating to this proposal, will be allocated in blocks of 24 hours and the data will become available in the data archive with an 18 month embargo period. The second type of time will be scheduled in shorter blocks and the data archived with a 10 year embargo.less
Australia Telescope National Facility - PX500 - FAST: category 1 purchased time - Published 08 Jan 2020
Australia Telescope National Facility - P1022 - The first well-calibrated, coherent de-dispersed search for pulsars in 47 Tucanae - Published 07 Jan 2020
Australia Telescope National Facility - P595 - PULSE@Parkes (Pulsar Student Exploration at Parkes) - Published 07 Jan 2020
Australia Telescope National Facility - P1022 - The first well-calibrated, coherent de-dispersed search for pulsars in 47 Tucanae - Published 06 Jan 2020
Australia Telescope National Facility - P1022 - The first well-calibrated, coherent de-dispersed search for pulsars in 47 Tucanae - Published 02 Jan 2020
Australia Telescope National Facility - PX501 - FAST: category 2 purchased time - Published 02 Jan 2020
Australia Telescope National Facility - PX500 - FAST: category 1 purchased time - Published 30 Dec 2019
Australia Telescope National Facility - P456 - A millisecond pulsar timing array - Published 29 Dec 2019
Australia Telescope National Facility - P1022 - The first well-calibrated, coherent de-dispersed search for pulsars in 47 Tucanae - Published 27 Dec 2019
Australia Telescope National Facility - P1022 - The first well-calibrated, coherent de-dispersed search for pulsars in 47 Tucanae - Published 25 Dec 2019
Australia Telescope National Facility - P1022 - The first well-calibrated, coherent de-dispersed search for pulsars in 47 Tucanae - Published 22 Dec 2019
