AndreaBozzo/ceres-open-data-index huggingface dataset:
Parkes observations for project P1357 semester 2025OCTS_02

MeerKAT has already discovered a number of Galactic transients, which are most likely to be Rotating Radio Transients (RRATs). Previous observations of a few of these sources with the Murriyang UWL receiver have proven its utility in follow-up timing observations of MeerKAT discoveries. MeerKAT has discovered a few more RRATs in its latest observing cycle and high quality UWL follow-up observations of these sources are required to determine the rotational period and period derivative and also to study their emission properties. Therefore, we request follow-up observations of 5 new sources to achieve this and to further enable spectral and polarization studies of these sources. Given the potential link between RRATs, magnetars, and some fast radio bursts (FRBs) suggested by both observations and theories, this study could reveal more similarities between these different classes of transient sources and significantly advance our understanding of their origins.

Organization: CSIRO Data Access Portal
Parkes observations for project P1372 semester 2025OCTS_01

The gamma-ray source, 4GFL J1646.5-4406, has recently been identified as a new spider pulsar binary, and potentially a redback system due to its longer eclipse. With only ~30 redback systems known so far, a detailed analysis of such a new system is needed to further understand this population. We requested simultaneous 6x2-hour Murriyang UWL and 6x3-hour ATCA L-band observations on this newly identified pulsar, PSR J1646-4406, covering its ingress and/or egress to further constrain its orbital parameters, investigate the eclipse mechanism and intrabinary shocks, and understand its evolutionary pathways.

Organization: CSIRO Data Access Portal
Parkes observations for project P1196 semester 2025OCTS_01

Temporal variations of the spectro-polarimetric nature of pulsars is remained unexplored. Such investigations can offer significant potential for uncovering key insights into pulsar emission mechanisms, magnetic field geometry, and propagation effects within the magnetosphere. In this proposal, we request to observe the binary system, J2144-5237 in a binary system using the Parkes telescope. From previous Parkes observations archival data of this system, we found evidence of spectral changes with time (orbital phase) and Gigahertz Peaked Spectra (GPS). Additionally, we observe highly correlated spectral properties between the Stokes properties with orbital phase for this MSP. With this proposal we want to increase the orbital phase sampling, in order to study the following properties:
  1. Change of spectral nature (including temporal changes) with orbital phase
  2. Rotation measure variations with orbital phase
  3. Correlation between Stokes parameters with orbital phase
  To our knowledge, this is the first investigation of time-varying properties of the spectro-polarimetric nature of any pulsars or MSPs. To further study, we request for 50 hrs of observation time with Parkes UWL receiver, with an orbital period of 10 days, this will allow us to cover ~0.2 of the orbital phase.

Organization: CSIRO Data Access Portal
Parkes observations for project P595 semester 2025OCTS_10

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 pulsar data. The data from some PULSE@Parkes observations are used to support the space missions, 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.

Organization: CSIRO Data Access Portal
Parkes observations for project P1388 semester 2025OCTS_01

We propose 12 hours of Murriyang pulsar search mode observations to follow up two intriguing new short-timescale radio transient sources discovered in ASKAP Guest Science Projects. These sources are of unknown origin, but may be radio pulsars, or another exotic source class. These high time resolution observations will either be used to detect periodic pulsations, faint, short-timescale variability, or place meaningful limits on the short-timescale variability of these sources.

Organization: CSIRO Data Access Portal
Long-term project observations for project P456 semester 2025OCTS_03

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 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, along with the international community, are now working hard to either confirm or deny this result, and to determine the astrophysical origin of this signal. With this proposal, we aim to maintain our pre-eminent position in the field. This is a continuing proposal for which observations of millisecond pulsars (MSPs) will continue to improve bounds on ultra-low-frequency gravitational waves until they are detected with confidence. 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, continued observations will resolve the background origin and individual sources will be identified; advancing the nascent field of gravitational wave astronomy.

Organization: CSIRO Data Access Portal
Parkes observations for project P1183 semester 2025OCTS_05

After nearly three years of monitoring, comprising with the Parkes telescope and the FAST telescopes, FRB 20220529 is proven to be an extremely interesting repeater. It exhibits one of the longest activity durations and a potential ~200-day RM period. Due to frequent observations scheduled with both Parkes and FAST, an abrupt rotation measure (RM) flare has been observed in this source. This is the first detection of such an RM flare'' in a fast radio burst (FRB), suggesting that the source is in an environment with occasionally erupting coronal mass ejection. This presents a unique opportunity to study the eruption environment of FRBs and investigate the relation between burst activity and other burst parameters. If confirmed, the periodicity and theRM flare'' of FRB 20220529 would corroborate each other and become a ``smoking gun'' of the binary origin of FRB. In previous analysis, both Parkes and FAST observations have proven essential. While FAST's higher sensitivity has enabled the capture of many bursts, Parkes' wideband receiver has provided a good burst detection rate even during low-rate phases. Notably, during the RM flare, two high signal-to-noise ratio bursts from Parkes have been crucial in understanding the RM variations. To further investigate FRB 20220529, we have scheduled regular FAST observations every fortnight, monitoring the source for 20 minutes each time. Therefore, we also propose to monitor FRB 20220529 using the Parkes UWL receiver, ensuring high-time resolution and employing full-polarization observations.

Organization: CSIRO Data Access Portal
Parkes observations for project P1183 semester 2025OCTS_06

After nearly three years of monitoring, comprising with the Parkes telescope and the FAST telescopes, FRB 20220529 is proven to be an extremely interesting repeater. It exhibits one of the longest activity durations and a potential ~200-day RM period. Due to frequent observations scheduled with both Parkes and FAST, an abrupt rotation measure (RM) flare has been observed in this source. This is the first detection of such an RM flare'' in a fast radio burst (FRB), suggesting that the source is in an environment with occasionally erupting coronal mass ejection. This presents a unique opportunity to study the eruption environment of FRBs and investigate the relation between burst activity and other burst parameters. If confirmed, the periodicity and theRM flare'' of FRB 20220529 would corroborate each other and become a ``smoking gun'' of the binary origin of FRB. In previous analysis, both Parkes and FAST observations have proven essential. While FAST's higher sensitivity has enabled the capture of many bursts, Parkes' wideband receiver has provided a good burst detection rate even during low-rate phases. Notably, during the RM flare, two high signal-to-noise ratio bursts from Parkes have been crucial in understanding the RM variations. To further investigate FRB 20220529, we have scheduled regular FAST observations every fortnight, monitoring the source for 20 minutes each time. Therefore, we also propose to monitor FRB 20220529 using the Parkes UWL receiver, ensuring high-time resolution and employing full-polarization observations.

Organization: CSIRO Data Access Portal
Long-term project observations for project P574 semester 2025OCTS_03

We request time to observe 270 pulsars on a regular basis in order to achieve three main science goals. The first is to understand pulsars: how do they spin down and what disrupts this process, how and why their profiles vary with time, whether they precess or have planetary mass companions, in short all the things that make pulsar timing noisier than the perfect clock. Secondly we want to understand the interstellar medium of our Galaxy through repeated monitoring of dispersion measure, rotation measure and flux density variations in conjunction with scintillation parameters. Finally, we provide these data as a community service both to the high-energy community where we have strong collaborative links (particularly to Fermi) and to the radio pulsar astronomers generally through the CSIRO archive. The project is on-going since 2007, we are (co-)authors on 107 papers arising from the P574 data. The data have contributed to the PhD theses of students from Bordeaux, Manchester, Oxford, Stanford, and Swinburne. We are seeking long-term project status with a view to continuing the project into the SKA era.

Organization: CSIRO Data Access Portal
Parkes observations for project P1386 semester 2025OCTS_06

J0045-7319 is a B star/pulsar binary in the Small Magellanic Cloud (SMC) with an orbital period of 51 days. The system is highly eccentric, with a closest approach of only 6 B-star radii, and it offers an unusual probe into massive stars in the SMC. Although similar systems exhibit strong dispersion measure (DM) variation during periastron arising from the stellar wind, observations in 1996 on the Parkes 70 cm receiver found no evidence of a wind from the B star. We propose a new set of observations on the Ultra-Wide Low-frequency receiver (UWL) designed to measure the wind. A null result will decrease the known upper limit on the B-star wind's contribution to DM by a factor of 9.

Organization: CSIRO Data Access Portal
Parkes observations for project P1378 semester 2025OCTS_04

We propose to observe 2XMM J104608.7-594306 with the Murriyang UWL receiver. This is a known thermally X-ray emitting neutron star in the Carina Nebula, which was recently discovered to show remarkable bursts of coherent radio emission. This is the first of this class of neutron stars to be seen to emit radio pulses. The primary goal of this proposal is to search for more coherent radio bursts from this object, and study their morphology, spectral features and polarization properties. These aims will provide us with crucial insights into the common emission mechanism operating over a wide range of magnetic field strengths and neutron star ages, which will help to understand the physical link between the different classes of neutron stars and their evolutionary pathways.

Organization: CSIRO Data Access Portal
Heard and MacDonald Islands (HIMI) multibeam and single beam bathymetry compilation

This record describes collated multibeam and single beam datasets for Heard Island and McDonald Island (HIMI). The dataset was generated for FRDC Project No 2019-169 using a combination of available multibeam (MBES) data (CSIRO RV Investigator), single beam (SBES) data, and existing background bathymetry products. The compiled dataset includes MBES data from RV Investigator voyages IN2016_V01 and IN2020_V01. The SBES data was collected by fishing vessels and the data made available through the FRDC project. Background datasets used include the GEBCO 2022 Grid (GEBCO Compilation Group, 2022) and the AusBathyTopo (Kerguelen Plateau) 100m 2022 - A regional-scale depth model (Beaman, R.J., 2022).
The final product is a compiled and interpolated bathymetry surface for HIMI at 200 m resolution (World Mercator projection) in GeoTIFF format. 
NB: Combining datasets from various sources, such as SBES, MBES and satellite derived, will result in artefacts due to the differences in resolution and accuracy of each of these systems.

Organization: CSIRO Data Access Portal
Long-term project observations for project P456 semester 2025OCTS_04

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 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, along with the international community, are now working hard to either confirm or deny this result, and to determine the astrophysical origin of this signal. With this proposal, we aim to maintain our pre-eminent position in the field. This is a continuing proposal for which observations of millisecond pulsars (MSPs) will continue to improve bounds on ultra-low-frequency gravitational waves until they are detected with confidence. 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, continued observations will resolve the background origin and individual sources will be identified; advancing the nascent field of gravitational wave astronomy.

Organization: CSIRO Data Access Portal
Micropalaeontological examination of further samples from bore No 3864 on PJ McGirr's property, Lauradale, Bourke, New South Wales

Results of a micropalaeontological examination of samples taken from 1460 feet down to 1619 feet. This series is in continuation of that reported upon on 19/3/46.

Tags: AU-NSW, GA Publication, Geology, Published_External, Record, palaeontology
Organization: Geoscience Australia Data
Long-term project observations for project P455 semester 2025OCTS_02

This project is to continue timing and profile studies of the first double-pulsar system, a unique laboratory for gravitational physics. Important results published in our 53-page Phys. Rev. X paper (2021) include the first measurements of higher-order light-propagation effects and of the relativistic deformation of the orbit and highlight the importance of a long term observational campaign, including VLBI observations, for this remarkable system. The main aims of this proposal are to provide the strongest tests to date for general relativity and to measure for the first time the moment-of-inertia of a neutron star. Additionally, we will determine the system geometry, map the pulsar beams via geodetic precession, and search for the reappearance of Pulsar B. We exploit the high sensitivity and broad bandwidth of the UWL receiver. We are collaborating with the MeerKAT Double Pulsar Timing team to optimise combination of MeerKAT and UWL data.

Organization: CSIRO Data Access Portal
Parkes observations for project P1388 semester 2025OCTS_02

We propose 12 hours of Murriyang pulsar search mode observations to follow up two intriguing new short-timescale radio transient sources discovered in ASKAP Guest Science Projects. These sources are of unknown origin, but may be radio pulsars, or another exotic source class. These high time resolution observations will either be used to detect periodic pulsations, faint, short-timescale variability, or place meaningful limits on the short-timescale variability of these sources.

Organization: CSIRO Data Access Portal
Parkes observations for project P960 semester 2025OCTS_05

We aim to carry out receiver pointing and characterisation tests of Parkes receivers. Typically, these tests are carried out after the receiver package is installed, but time does not always allow for proper characterisation. Receivers for consideration include UWL, MARS and 13MM packages. In addition to cross-referencing C007 for flux calibration via pointing, we aim to conduct gain-elevation and system temperature experiments using the Moon, to ensure users of the Parkes Observatory have the most accurate information available for calibration purposes.

Organization: CSIRO Data Access Portal
Spatial data analysis for mapping managed aquifer recharge potential under uncertainty in the Murray-Darling Basin

Managed aquifer recharge (MAR) potential was assessed under unconfined and confined aquifer conditions using a spatial analysis method that incorporates uncertainty. Long-term groundwater level trends identified areas of decline, while sensitivity analysis showed that key variable impacts are location-dependent. This integrated approach highlights opportunities to reduce groundwater stress and support agricultural productivity.

Organization: CSIRO Data Access Portal
Long-term project observations for project P885 semester 2025OCTS_04

We propose a modest program to continue monitoring 4 of the 6 known radio magnetars in order to achieve three primary science goals. The first is to characterise magnetar outbursts over long timescales, for which tracking their rotational, flux density, and polarisation properties provide a clear view of the impulse response of their magnetic fields. Second, understanding the links between magnetars the mysterious fast radio burst phenomenon through the discovery of rare emission and propagation effects, shared spectro-temporal phenomenology, and connections to high-energy (X-ray/gamma-ray) phenomena. Lastly, our continued monitoring has enormous benefit to the wider magnetar community, providing rapid alerts to changes in activity, adding context to unusual behaviour detected by high-energy observations, and a host of supplementary science through the teams extensive collaborative networks. The project and its precursors have been running since 2007 and have contributed to 21 publications since then. We are seeking to convert the project to long-term status, thereby also carrying these investigations into the SKA era.

Organization: CSIRO Data Access Portal
Parkes observations for project P1375 semester 2025OCTS_04

Open clusters have historically shown a striking absence of neutron stars due to their shallow gravitational potential wells that cannot retain these compact objects after supernova explosions with large natal kicks. However, our recent archival search of Parkes observations has discovered three promising Rotating Radio Transient (RRAT) candidates, RRAT J1749-25, RRAT J1702-44, and RRAT J1237-60, in the direction of old open clusters. The dispersion measure (DM) analysis provides compelling evidence for cluster membership, with RRAT J1749-25 showing DM consistent with Theia 1661's predicted values, and RRAT J1237-60 exhibiting DM comparable to Trumpler 20's expectations. These detections are based on limited single-pulse observations with signal-to-noise ratios of ~7-8, requiring confirmation through extended observations. We propose follow-up observations using the Parkes Ultra-Wideband Low receiver with doubled integration times (2 hours per source, repeated twice) to confirm the astrophysical nature of these candidates and characterise their emission properties. Confirmation of neutron stars in open clusters would have profound implications for stellar evolution models, neutron star retention mechanisms, and our understanding of binary evolution in different stellar environments.

Organization: CSIRO Data Access Portal
Parkes observations for project P630 semester 2011APRS_18

We propose to carry out the most ambitious and comprehensive all-sky survey for pulsars and transient sources to date. Using the 20cm multibeam and a new digital filterbank array this survey will create a petabyte digital record of the sky that can be data mined in the future and used to search for relativistic binary and millisecond pulsars, RRATs, and extragalactic radio bursts. The survey should discover 100s of new millisecond and normal pulsars and help define the lower limit to pulsar periods, test theories of relativistic gravity, find transients and provide pulsars for gravitational wave detection.

Organization: CSIRO Data Access Portal
Long-term project observations for project P1101 semester 2025OCTS_03

We propose a long-term project to monitor a very active repeater, FRB 20190520B, with Murriyang's UWL system. Our previous observations show that FRB 20190520B is not only among the most active FRBs that can be observed with Murriyang, but also shows extreme rotation measure (RM) and dispersion measure (DM) evolution, along with distinctive behavior at 3GHz frequency. This makes the UWL receiver uniquely suited for detailed studies and long-term monitoring of this repeating FRB. Through this program, we anticipate detecting a large sample of bursts from this FRB. In collaboration with FAST, we aim to investigate the time evolution of various properties of FRB 20190520B, enhance our understanding of polarisation across an extremely wide bandwidth with high sensitivity, and gain deeper insights into the local environment and emission mechanisms of FRBs.

Organization: CSIRO Data Access Portal