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Otway CCS methane data from the 2011 controlled release experiment
No full textHourly averaged and minutely averaged atmospheric methane concentrations from measurements made at CO2CRC's Otway Carbon Capture and Storage (CCS) site in Victoria (Australia) during a controlled release experiment in 2011. Hourly averaged data of methane emission rate, wind speed and wind direction are also given.\nLineage: Details of data production are given in Luhar et al. (2014, https://doi.org/10.1002/2014JD021880, ...
Australian Food System Policy Dashboard
No full textThis is a dashboard that visualises a mapping of Australian Federal Government policies relating to the food system against activities and outcomes. It presents the Food System Policy Mapping tool, which was developed as part of wider process for examining policy coherence within the Australian Food System.\nLineage: The data in this dashboard is based on policies relating to the food system were collected from a number of sources. Each policy was analysed by a reviewer and any clear connections between purpose of the policy and an element of food system activities, outcomes, target populations, or stakeholders, would be recorded. Each policy received a secondary analysis to act as a peer review. The food system activities are based on categories and definitions designed by van Berkum (2018). The food system outcomes were adapted from the HLPE food system frameworks.\nThe data is then presented using a Sankey diagram with food system activities and food system outcomes as endpoints. The diagram is supported by a table that describes each included policy
Parkes observations for project P1165 semester 2023OCTS_07
No full textWe recently discovered a new pulsar J1849+1001 (35.1 ms) in a FAST pulsar survey at intermediate Galactic latitudes (PT2020_0141). Follow-up timing observations show that they are in circular orbits with massive companions. This suggests that PSR J1849+1001 can be classified as an intermediate-mass binary pulsar (IMBP). Their massive companions also make them promising systems to measure "Post-Keplerian" parameters through pulsar timing. These Parkes observations will be combined with regular timing observations with FAST to measure "Post-Keplerian" parameters and then measure both neutron star and companion masses
Parkes observations for project P456 semester 2023OCTS_09
No full textThe 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 our understanding of Solar-system dynamics. We are now in an exciting regime where a signal detected in our (and other data sets) has the form expected for a gravitational wave background. We are therefore now attempting to confirm, or deny, this exciting result. With this proposal we aim to maintain our pre-eminent position in the field.\r\n\r\nUnlike 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
Parkes observations for project P1219 semester 2023OCTS_26
No full textThe magnetic field potentially regulates the process of star formation and the evolution of molecular clouds. It is inherently difficult to measure interstellar magnetic field strengths, with the measurement of Zeeman splitting a unique method to estimate the magnetic field strength along the line of sight directly. Despite the detection of Zeeman splitting in other mediums, there are as yet no Zeeman detections against compact background sources in quiescent molecular clouds or the cold neutral medium. Pulsars with extremely small solid angles and relatively high transverse velocities are ideal background sources to study the magnetic field in molecular clouds, providing a distinct signal to measure splitting against. There are four pulsars with OH absorption detections, namely PSR B1849+00, B1641-45, B1718-35, and B1749-28. We propose to utilize these four pulsars to explore the properties of the magnetic field and its variations within molecular clouds through both the Zeeman splitting of OH absorption and rotation measure estimations, between epochs. If a detection is confirmed, it will open a new window on the hard-to-measure magnetic fields in molecular clouds, independent of interpretation, thus shedding light on the physics of star formation and the interstellar medium
Parkes observations for project P574 semester 2023OCTS_06
No full textWe request time to observe 260 pulsars on a regular basis in order to provide the accurate ephemerides necessary for the detection and characterisation of gamma-ray pulsars with the Fermi satellite. The main science goals are to increase the number of known gamma-ray pulsars (both radio loud and radio quiet), to determine accurate pulse profiles, and to characterise their high energy (phase-resolved) spectra. In the radio, the observations will also allow us to investigate: neutron stars and pulsar emission via detecting glitches and determining pulse timing parameters; and the ISM via measuring and monitoring dispersion measures, Faraday rotation measures, and scintillation. To date, we are (co-)authors on over 95 papers arising from the collaboration and P574 data, including four which use UWL observations. The data have contributed to the PhD theses of students from Bordeaux, Manchester, Oxford, Stanford, and Swinburne
Parkes observations for project PX500 semester 2023OCTS_16
No full textThis 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 (and 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
Parkes observations for project P1178 semester 2023OCTS_06
No full textWe are actively developing a new version of the ATNF pulsar catalogue. In the paper describing the new catalogue we wish to take the opportunity to publish important pulsar parameters that have, to-date, not been published. The fundamental property of a pulsar is its pulse period and yet we have identified a large number of pulsars that do not having a measured spin-down rate and hence we do not know their evolutionary state, nor have good positions or knowledge of whether they are in a binary system. We have therefore selected 53 pulsars with the goal of measuring their spin-down rates. During this project we will also develop an automated pulsar-fold-mode online processing pipeline that includes online RFI mitigation. This pipeline will be made available as an ATNF service for other users
Parkes observations for project P456 semester 2023OCTS_12
No full textThe 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 our understanding of Solar-system dynamics. We are now in an exciting regime where a signal detected in our (and other data sets) has the form expected for a gravitational wave background. We are therefore now attempting to confirm, or deny, this exciting result. With this proposal we aim to maintain our pre-eminent position in the field.\r\n\r\nUnlike 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
Parkes observations for project P1382 semester 2025OCTS_02
No full textThe prevalence of millisecond pulsars (MSPs) in and around the Galactic center and the bulge has been one of the key questions in pulsar astronomy. In addition to finding more exotic and interesting binary systems at and around the Galactic center and bulge due to the enhanced density of stars/stellar remnants, MSPs are also proposed to be one of the candidates to explain the observed Fermi gamma-ray excess. However, most of the MSPs discovered so far are field (disk) MSPs or those in globular clusters. Initial steps towards addressing the question of Galactic center/bulge MSPs were made with the discovery of the first MSPs in a Galactic filament, but more progress comes from the discovery of a sample of MSPs around the Galactic center. Blind surveys targeting MSPs can suffer from many observational biases that smear the pulses due to binary acceleration, scattering from the enhanced density, and so on, which increases the parameter space for discovery and can sometimes make the problem intractable. However, if pulsar candidates can be identified reliably from imaging surveys, then targeted observations can make the problem tractable in identifying the pulsations. We followed up a sample of polarized sources identified in the MeerKAT bulge imaging survey and discovered a sample of 16 new MSPs. Here we request the timing observations of 8 interesting MSPs (a subset of our discovery sample), to study the binary nature of these sources and their potential inclusion in pulsar timing array efforts