13,158 datasets

ZivaHub + Deakin Research Online + DMU Figshare2026 · Astronomical catalogue · unknown

Characterising the atmospheres of exoplanets allows for the understanding of their formation, climate and habitability. There are three broad methods used for characterising the atmospheres of exoplanets: direct imaging, transmission spectroscopy, and (high-resolution) emission spectroscopy. The first, direct imaging, is currently only applicable to very large, hot planets orbiting far from their

ZivaHub + Deakin Research Online + DMU Figshare2026 · Astronomical catalogue · unknown

Thin stellar discs are ubiquitous in galaxies, both on galactic and nuclear scales. These fragile structures are thought to be easily destroyed in major mergers, making the age-dating of their stellar populations a useful diagnostic for the assembly history of galaxies. My study aims to investigate the fragility of these discs in intermediate-mass-ratio encounters. To achieve this, I use high-reso

ZivaHub + Deakin Research Online + DMU Figshare2026 · Astronomical catalogue · unknown

Superluminous supernovae (SLSNe) are among the most luminous stellar explosions known, offering a unique insight into the lives and deaths of the most massive stars. These explosions require additional energy sources beyond the decay of 56Ni, with central engines such as rapidly rotating magnetars, or strong circumstellar medium (CSM) interaction, among the leading candidates. Despite significant

DMU Figshare + UCL Research Data Repository2026 · Astronomical catalogue · unknown

Transneptunian objects are icy bodies beyond the orbit of Neptune. A large fraction are found in binary pairs, up to ~30% in the Cold Classical population, which generally have components of similar size and colour on widely separated orbits. Understanding what mechanisms have lead to the formation of such a high binary fraction, and their orbital distributions, holds the potential to elucidate th

ZivaHub + Deakin Research Online + DMU Figshare2026 · Astronomical catalogue

<p dir="ltr">The abstract for the theory presented in "The_Singularity_Theory_v3_with_AppendixI-1_TOC_updated.pdf" details a dimensionally consistent, non-minimally coupled scalar-tensor extension of general relativity. ​Core Derivation: The theory is motivated by a momentum-dependent propagation velocity, v(P)=c[1+KP/E_{Planck}]^{-1}. A spacetime scalar \varphi, which is sourced by the local aver

ZivaHub + Deakin Research Online + DMU Figshare + UCL Research Data Repository2026 · Astronomical catalogue · unknown

The discovery of exoplanets in the 90s has transformed our ability to study the formation, evolution, and structure of planetary systems. In particular, the huge, high-temperature exoplanets known as hot Jupiters are fascinating laboratories for extreme atmospheric physics, and their size, translucent atmospheres and proximity to their host stars makes them excellent targets for characterisation t

ZivaHub + Deakin Research Online + DMU Figshare2026 · Astronomical catalogue · unknown

The hydrogen-deficient stars comprise a diverse group of objects characterised by very low atmospheric hydrogen abundances. The variety and peculiar compositions of these stars raise questions about how they form and evolve. Ongoing survey efforts using the Southern African Large Telescope (SALT) have aimed to answer these questions by identifying and classifying hydrogen-deficient objects. This t

UCL Research Data Repository2026 · Astronomical catalogue · unknown

This thesis focuses on transit events; both the detectability of the Solar system planets and the detection of extra-solar planets. I start by flipping the concept of exoplanet transit events and stated where transits of the Solar system planets could be observed from. We call these regions of visibility “transit zones” which trace the shadows of the planets outwards from the Sun. I estimated the

ZivaHub + Deakin Research Online + DMU Figshare + UCL Research Data Repository2026 · Astronomical catalogue · unknown

This thesis presents the results of the first detection of an atmospheric response to a flare induced Sunquake (SQ). Ground-based observations of the Ca II 8542 Å and H-α 6563 Å passbands from the Swedish 1-m Solar Telescope (SST) were used in combination with space-based observations from the Heliosesimic and Magnetic Imager (HMI) onboard the Solar Dynamics Observatory (SDO). Both instruments obs

ZivaHub + Deakin Research Online + DMU Figshare2026 · Astronomical catalogue · unknown

Wave motions have been detected throughout the solar atmosphere for many decades, and their ability to transport energy through the atmosphere has sparked wide investigation into the role of waves in the heating of the upper solar atmosphere. Strong predominantly vertical magnetic fields within sunspots provide ideal conduits for waves generated by subphotospheric p-modes to propagate upwards thro

ZivaHub + Deakin Research Online + DMU Figshare2026 · Astronomical catalogue

<p dir="ltr"> In this paper the idea of invariance of Planck's constante is introduced analogous the the invariance of the speed of light in vacuum and from it the Photon's mass is derived, moreover the Photon's mass is also derived from De Broglie's relations showing a connection between the invariance of Planck's constant in vacuum and De Broglie's relations down to quantum mechanical level.</p>

ZivaHub + Deakin Research Online + DMU Figshare2026 · Astronomical catalogue · unknown

In this thesis, I present the Planet Hunters NGTS citizen science project. In this project, we enlist the help of members of the public to visually vet candidates from the Next Generation Transit Survey (NGTS). The aim of this project is to detect planet candidates that were missed in initial searches of these data. By combining classifications from multiple non-expert volunteers, we are able to e

ZivaHub + Deakin Research Online + DMU Figshare2026 · Astronomical catalogue · unknown

With recent developments in technology, instrumental precision is no longer the limiting factor in detecting Earth-analogue exoplanets using the radial velocity (RV) method. Instead, the astrophysical noise caused by stellar activity can mask or, in extreme cases, mimic planetary RV motions. Therefore, this thesis is dedicated to trying to better understanding the impact of stellar activity in ord

ZivaHub + Deakin Research Online + DMU Figshare + UCL Research Data Repository2026 · Astronomical catalogue · unknown

Instrumental precision is no longer the biggest impediment to the discovery of Earth-like planets. Indeed, future space missions and next generation spectrographs are technically capable at finding and characterising Earth-analogue planets. However, it is now stellar activity that poses a critical challenge on the pathway to detect habitable Earth-like worlds. This thesis is therefore dedicated to

ZivaHub + Deakin Research Online + DMU Figshare2026 · Astronomical catalogue · unknown

We measured the photometric properties of trans-Neptunian binary (TNB) components in optical and near-infrared wavelengths to characterise their surfaces. As remnants of the early protoplanetary disk, trans-Neptunian objects provide insights into the evolution of the Solar System and the effects of planetary migration. Mass and density estimates of TNBs can be combined with photometry to infer pot

UCL Research Data Repository2026 · Astronomical catalogue · unknown

This thesis presents visual and near-infrared spectroscopic observations of Trans-Neptunian Objects and centaurs obtained over four observing runs at the ESOVery Large Telescope. The reflectance spectra of these minor planets were investigated to determine whether silicates and refractory organics, which are predicted to be present on their surfaces, could be directly detected via the presence of

ZivaHub + Deakin Research Online + DMU Figshare2026 · Astronomical catalogue

<p dir="ltr">Physical systems do not have access to every imaginable configuration. Constituents, local laws, relations, environmental conditions, causal structure, and history jointly restrict the set of states that remain physically accessible. Within that restricted region, dynamics and stability criteria select configurations that can persist, while realized structures may in turn modify the c

ZivaHub + Deakin Research Online + DMU Figshare2026 · Astronomical catalogue · unknown

This thesis presents the data of the Mopra Southern Galactic Plane CO Survey and various analyses undertaken using the survey data. The survey covers a large region of the sky from l = 250^◦ to 355^◦ and |b| < 1^◦, with some extensions an area of 221 deg²in total.<br><br>These data have been taken at 0.6 arcminute spatial resolution and 0.1 km s<sup>−1</su

ZivaHub + Deakin Research Online + DMU Figshare2026 · Astronomical catalogue · unknown

Flare-induced Doppler shifts of photospheric spectral lines have been commonly observed for decades and in recent years been a focus of increased radiative-hydrodynamic (RHD) modelling investigations. The intensity enhancement and Doppler shifting of these lines indicate significant energy transfer to the deepest regions of the solar atmosphere and the generation of a photospheric velocity field a

ZivaHub + Deakin Research Online + DMU Figshare2026 · Astronomical catalogue · unknown

Transitional small bodies in the outer solar system preserve evidence of how icy planetesimals migrate inward and evolve. Centaurs, Neptune Trojans, and Jupiter-family comets record primordial conditions as well as ongoing dynamical and physical processing, but progress has been limited by small sample sizes and scarce colour or light curve data. The Vera C. Rubin Observatory’s Legacy Survey of Sp

ZivaHub + Deakin Research Online + DMU Figshare + UCL Research Data Repository2026 · Astronomical catalogue · unknown

The work presented in this thesis concerns the observation and study of Magnetohydrodynamic (MHD) waves in the photosphere and chromosphere of solar active regions. Spectropolarimetric Si I 10827 Å Facility Infrared Spectropolarimeter (FIRS) observations were used to study propagating MHD wave activity in a group of five photospheric solar pores. Oscillations with periods on the order of 5 minutes

ZivaHub + Deakin Research Online + DMU Figshare2026 · Astronomical catalogue · unknown

The small objects of the Outer Solar System are the material leftover from the construction of the planets and serve as a fossil record of the Solar System’s history. These planetesimals can be divided into populations based on their distance from the Sun and their orbital dynamics. Three such populations include the Kuiper belt, the Centaurs, and the Jupiter-family comets. The Kuiper belt consist

ZivaHub + Deakin Research Online + DMU Figshare2026 · Astronomical catalogue

<p dir="ltr">Exomoon stability is usually assessed by comparing a single assumed planetary tidal quality factor Qp against a critical value Qerit below which a moon is disrupted within the system's age a comparison that treats Qp as known, when it is unconstrained for every exoplanet and spans four to five orders of magnitude even among the Solar System's own giant planets. Building directly on th

ZivaHub + Deakin Research Online + DMU Figshare2026 · Astronomical catalogue

<p dir="ltr">This paper documents a single thesis of the Dahli Model: dark matter, the cosmic void and the pure</p><p dir="ltr">cosmic bubble are not three different entities but three phases of one essence, the pure cosmic mass. The pure cosmic bubble is the unquantized phase; dark matter is the same mass quantized into pure white-hole singularities and maintained by a quantized gravitational rel

ZivaHub + Deakin Research Online + DMU Figshare + HKU DataHub + Swinburne Figshare + DaYta Ya Rona + SUNScholarData + figshare + Loughborough Research Repository + GRANTS Data + UP Research Data Repository2026 · Astronomical catalogue

<p dir="ltr">Paper: AAS79106, The Astrophysical Journal</p><p dir="ltr">Title: Energy redistribution during 2D oscillatory reconnection</p><p dir="ltr">Authors: Luiz A. C. A. Schiavo, Jordan Talbot, Gert J. J. Botha, Ben Snow, Daniel Johnson, Madeleine L. Combrinck, and James A. McLaughlin</p><p dir="ltr">This repository contains the simulation code required to reproduce the numerical results pres