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Showing results for: [ Zhang, Lei ]
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 05 Aug 2020
We propose to use the Parkes UWL receiver for monitoring a small sub-set of the FAST-discovered pulsars, with special properties. The Parkes UWL system provides a unique capability for studying the pu... morelsars over wide bandwidths. The observation proposed will provide significant insight into the special emission properties of these new discoveries and facilitate science.less
Australia Telescope National Facility - P1063 - Long term monitoring of FAST discoveries - Published 27 Jul 2020
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 21 Jul 2020
Australia Telescope National Facility - P595 - PULSE@Parkes (Pulsar Student Exploration at Parkes) - Published 18 Jul 2020
Australia Telescope National Facility - P1063 - Long term monitoring of FAST discoveries - Published 13 Jul 2020
Australia Telescope National Facility - P595 - PULSE@Parkes (Pulsar Student Exploration at Parkes) - Published 12 Jul 2020
Australia Telescope National Facility - P595 - PULSE@Parkes (Pulsar Student Exploration at Parkes) - Published 06 Jul 2020
Australia Telescope National Facility - P595 - PULSE@Parkes (Pulsar Student Exploration at Parkes) - Published 04 Jul 2020
Australia Telescope National Facility - P595 - PULSE@Parkes (Pulsar Student Exploration at Parkes) - Published 30 Jun 2020
Australia Telescope National Facility - P1063 - Long term monitoring of FAST discoveries - Published 26 Jun 2020
We have re-processed all the observations in the Parkes pulsar data archive obtained during the first four years of the Parkes multibeam receiver and have discovered two new FRBs and five single pulse... more candidates (SPCs) from unknown sources, but with Galactic dispersion measures. These signals were only detected in a single beam of the receiver suggesting that they are unlikely to be terrestrial. There are no known pulsars in the pointing direction of the five SPCs and therefore are likely giant pulses from currently unknown pulsars. Using the Ultra Wideband Low (UWL) receiver we have opportunity to detect repeating signals from the two FRBs and to confirm the five SPCs. As all these signals were detected in the 20 cm band, the UWL provides the opportunity to observe stronger emission in other observing bands.less
Australia Telescope National Facility - P1040 - Follow-up observations of transient events detected in the Parkes data archive - Published 25 Jun 2020
We propose observations with the ultra-wide-bandwidth, low frequency receiver (UWL) installed at the Parkes telescope to carry out single pulse study of millisecond pulsars. We have selected two of th... moree brightest pulsars that are regularly observed by the Parkes Pulsar Timing Array. Our observations will enable statistical properties study of single pulses with ultra-wide-bandwidth, measuring jitter noise level of the linear and circular polarization states as well as in the total intensity signal, measuring jitter bandwidth and how jitter noise decorrelates with frequency. The UWL receiver, with its much wider bandwidth, will provide unique opportunity for study of jitter noise evolution with frequency.less
Australia Telescope National Facility - P1043 - Single pulse study of millisecond pulsars using the Parkes wideband receiver - Published 25 Jun 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 23 Jun 2020
Australia Telescope National Facility - P1063 - Long term monitoring of FAST discoveries - Published 18 Jun 2020
Australia Telescope National Facility - P1063 - Long term monitoring of FAST discoveries - Published 13 Jun 2020
Australia Telescope National Facility - P595 - PULSE@Parkes (Pulsar Student Exploration at Parkes) - Published 13 Jun 2020
Australia Telescope National Facility - P595 - PULSE@Parkes (Pulsar Student Exploration at Parkes) - Published 01 Jun 2020
Australia Telescope National Facility - P456 - A millisecond pulsar timing array - Published 31 May 2020
The Parkes Ultra-wide-bandwidth receiver enables, for the first time with the Parkes telescope, a commensal high time and high frequency resolution survey. We will observe Baade's window in which we ... moreare guaranteed detections of pulsars and spectral lines. Our science drivers are diverse and range from understanding scattering, to detecting new pulsars, to searching for galaxies in the zone of avoidance, probing the globular cluster at the centre of the window and studying OH circumstellar masers and CO-dark molecular gas. The observing strategy and processing software developed for this survey will be applicable to all future Parkes surveys with the wide-band receiver or cyrogenically-cooled phased array feed.less
Australia Telescope National Facility - P1067 - A wide-band survey of Baade's Window in the time and frequency domains - Published 29 May 2020
Australia Telescope National Facility - P595 - PULSE@Parkes (Pulsar Student Exploration at Parkes) - Published 28 May 2020
Australia Telescope National Facility - P1063 - Long term monitoring of FAST discoveries - Published 28 May 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 25 May 2020
We propose to observe a sample of 22 pulsars at high Galactic latitudes with the Parkes Ultra-Wideband Low (UWL) receiver. This sample of pulsars does not have flux densities nor polarisation measured... more before. The goal is to characterise their wideband properties in polarisation, spectrum and interstellar scintillation. Such properties will help us develop imaging pulsar search techniques for future radio continuum surveys, such as with the Australian SKA Pathfinder (ASKAP). Wideband spectrum, polarisation and scintillation of pulsars will also be useful for studies of pulsar radiation mechanism and interstellar medium at high Galactic latitudes.less
Australia Telescope National Facility - P1059 - Wideband polarisation spectrum and interstellar scintillation of high Galactic latitude pulsars - Published 25 May 2020
Australia Telescope National Facility - P1063 - Long term monitoring of FAST discoveries - Published 25 May 2020
