2,068 datasets

UCL Research Data Repository2026 · Astronomical catalogue · unknown

In this thesis we develop and systematically analyse models which describe collisional processes involving neutral molybdenum (Mo I), neutral tungsten (W I), singly ionised iron (Fe II), and neutral iron (Fe I). While atomic data for the neutral stages of molybdenum and tungsten finds an important application when investigating the influx of impurities into magnetically confined fusion plasmas, at

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

In this thesis, relativistic atomic structure calculations and electron-impact excitation calculations are presented for the first three ion stages of gold, the first three ion stages of platinum and doubly ionised tungsten. The atomic data computed for gold and platinum is relevant in astrophysical plasma diagnostics, specifically in the study of neutron star mergers as the origin of the elements

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

The work presented in this thesis details a multi-instrument analysis of Lyman-alpha (Lya; 1216 Å) emission from solar flares, focusing on its energetic significance, behaviour during flares, correlation with nonthermal electrons, and the observational consistency across past and present instrumentation. Although Lya is the most intense line in the solar spectrum, flare-related observations have b

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

In the outer Solar System beyond Neptune lies the Kuiper Belt, a sea of icy planetesimals which are the remains of the small planet forming bodies that failed to form into a planet beyond Neptune. Studying these small bodies sheds light on planetary formation, along with revealing the giant planets’ early dynamical history and the compositional structure of the Solar System’s primordial planetesim

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

The field of exoplanetary science, the study of planets around stars other than the Sun, has undergone rapid expansion over the last few decades, with over 4000 confirmed exoplanets now known. With a wealth of favourable targets identified, it has recently become possible to begin to characterise the atmospheres of these planets in detail. Transmission and emission spectroscopy, performed when a p

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>Omega bands are mesoscale structures in the auroral oval that appear during periods of enhanced geomagnetic activity. Omega band formation has previously been associated with highly localized drivers in the magnetotail and global compression regions in the solar wind. However, the identifying characteristics and magnetospheric preconditioning of substorms containing omega bands have never been

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

The Sun’s magnetic dynamo drives a wide range of activity observed across the electromagnetic spectrum, including flares and coronal mass ejections (CMEs). Low frequency radio emission from these events is important for probing the conditions in the solar corona, offering insights into outstanding questions relating to electron acceleration and magnetic variability. In particular, Type II and Type

NASA Data Portal2026 · Astronomical catalogue · unknown

Mars Science Laboratory Radiation Assessment Detector (RAD) Level 2 observation data for Mars surface operations. The record contains quality-filtered variables, identified by the _f suffix, and corresponding all-quality variables for detector alive time, dose-rate products, linear energy transfer (LET) spectra, and neutral-radiation histograms, together with associated bin and axis support variab

NASA Data Portal2026 · Astronomical catalogue · unknown

The Mars Science Laboratory (MSL) Radiation Assessment Detector (RAD) Level 1 observational counter data product contains time-tagged instrument housekeeping and observation metadata; rover and solar geometry; quality-filtered and all-quality linear energy transfer (LET) histograms for the A1 and A2 silicon detectors with associated LET bin energies; fast and slow hardware trigger counts for RAD d

ZivaHub2026 · Astronomical catalogue

Sample answers to the questions provided in this article

HKU DataHub + figshare + Loughborough Research Repository + UP Research Data Repository2026 · Astronomical catalogue

<p dir="ltr">Source data and reproduce code.</p>

ZivaHub2026 · Astronomical catalogue

<p>Projections of the fractional Thomas trajectory (<i>q</i> = 0.98, ) onto the <i>xy</i>, <i>xz</i> and <i>yz</i> planes after transients. The motion is a single periodic orbit.</p>

NASA Data Portal2026 · Astronomical catalogue · unknown

Mars Science Laboratory Radiation Assessment Detector (RAD) Level 2 observation data for Mars surface operations. The record contains quality-filtered variables, identified by the _f suffix, and corresponding all-quality variables for detector alive time, dose-rate products, linear energy transfer (LET) spectra, and neutral-radiation histograms, together with associated bin and axis support variab

ZivaHub2026 · Astronomical catalogue

<p>The same periodic orbit as in <a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0358480#pone.0358480.g002" target="_blank">Fig 2</a> in the full phase space.</p>

NASA Data Portal2026 · Astronomical catalogue · unknown

The Mars Science Laboratory (MSL) Radiation Assessment Detector (RAD) Level 1 observational counter data product contains time-tagged instrument housekeeping and observation metadata; rover and solar geometry; quality-filtered and all-quality linear energy transfer (LET) histograms for the A1 and A2 silicon detectors with associated LET bin energies; fast and slow hardware trigger counts for RAD d

ZivaHub2026 · Astronomical catalogue

<p>The chaotic attractor of <a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0358480#pone.0358480.g005" target="_blank">Fig 5</a> in the full phase space.</p>

ZivaHub2026 · Astronomical catalogue

<p>A clean closed orbit inside a period-3 window, consistent with the return of the Lyapunov exponent to the regular-motion band in <a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0358480#pone.0358480.g011" target="_blank">Fig 11</a>.</p>

IVOA Registry (Virtual Observatory)2026 · Astronomical catalogue

The INTEGRAL Public Data Results Catalog is based on publicly available data from the two main instruments (IBIS and SPI) on board INTEGRAL (see Winkler et al. 2003, A&amp;A, 411, L1 for a description of the INTEGRAL spacecraft and instrument packages). INTEGRAL began collecting data in October 2002. This catalog will be regularly updated as data become public (~14 months after they are obtained).

IVOA Registry (Virtual Observatory)2026 · Astronomical catalogue

The first full release of a survey of the 150 MHz radio sky observed with the Giant Metrewave Radio Telescope between April 2010 and March 2012 as part of the TGSS project. Aimed at producing a reliable compact source survey, the automated data reduction pipeline efficiently processed more than 2000 hours of observations with minimal human interaction. Through application of innovative techniques

IVOA Registry (Virtual Observatory)2026 · Astronomical catalogue

The Exoplanet Orbit Database is a database of well-determined orbital parameters of exoplanets, and their host stars&#39; properties. This database comprises spectroscopic orbital elements measured for planets orbiting their host stars from radial velocity and transit measurements as reported in the literature. The authors have also compiled fundamental transit parameters, stellar parameters, and

IVOA Registry (Virtual Observatory)2026 · Image

The European Space Agency&#39;s satellite COS-B was dedicated to gamma-ray astronomy in the energy range 50 MeV to 5 Gev and carried a single spark chamber telescope with approximately a 20 degree field of view. COS-B operated in a highly eccentric polar orbit with apogee around 90000 km between 17 August 1975 and 25 April 1982. During this operational lifetime, COS-B made 65 observations, 15 of w

IVOA Registry (Virtual Observatory)2026 · Astronomical catalogue

This catalog presents the results of a 2 - 10 keV BeppoSAX survey based on 140 high galactic latitude Medium Energy Concentrator Spectrometers (MECS) fields, 12 of which are deep exposures of ``blank&#39;&#39; parts of the sky. The limiting sensitivity is 5 x 10&lt;sup&gt;-14&lt;/sup&gt; erg/cm&lt;sup&gt;2&lt;/sup&gt;/s (or mW/m&lt;sup&gt;2&lt;/sup&gt;) where about 25% of the Cosmic X-ray Backgrou

IVOA Registry (Virtual Observatory)2026 · Astronomical catalogue

This table contains the first sample of 31-GHz selected sources to flux levels of 1 mJy. From late-2005 to mid-2007, the Sunyaev-Zel&#39;dovich Array (SZA) observed 7.7 deg&lt;sup&gt;2&lt;/sup&gt; of the sky at 31 GHz to a median rms of 0.18 mJy/beam. The authors identify 209 sources at greater than 5-sigma significance in the 31-GHz maps, ranging in flux from 0.7 mJy to ~200 mJy. Archival NRAO VL

IVOA Registry (Virtual Observatory)2026 · Astronomical catalogue

The Herschel Space Observatory (Herschel) is an ESA (European Space Agency) project with instruments funded by ESA member states. It was operated from May 2009 till April 2013, offering unprecedented observational capabilities in the far-infrared and sub-millimeter spectral range (55-671 microns [um]). Herschel carried a 3.5m diameter passively cooled Cassegrain telescope, which was the largest of

IVOA Registry (Virtual Observatory)2026 · Astronomical catalogue

This database table is based on the set of OSSE observation data products available at the HEASARC. The Oriented Scintillation Spectrometer Experiment (OSSE) is one of four experiments on NASA&#39;s Compton Gamma Ray Observatory (CGRO) satellite. OSSE was designed to undertake comprehensive gamma-ray observations of astrophysical sources in the 0.05-10 MeV energy range. The instrument also had sec