1,035 datasets found

Keywords: astrophysical processes

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  • BCool survey of solar-type stars

    We present the results of a major high-resolution spectropolarimetric BCool project magnetic survey of 170 solar-type stars. Surface magnetic fields were detected on 67 stars,...
  • HST Frontier Fields clusters

    Extending over three Hubble Space Telescope (HST) cycles, the Hubble Frontier Fields (HFF) initiative constitutes the largest commitment ever of HST time to the exploration of...
  • Members of ONC and Tau-Aur

    In light of recent substantial updates to spectral type estimations and newly established intrinsic colours, effective temperatures, and bolometric corrections for pre-main...
  • MACSJ0416.1-2403 strong-lensing analysis

    We present a high-precision mass model of the galaxy cluster MACSJ0416.1-2403, based on a strong-gravitational-lensing analysis of the recently acquired Hubble Space Telescope...
  • Variability of the PGa star HD 19400

    The aim of this study is to carry out an abundance determination, to search for spectral variability and for the presence of a weak magnetic field in the typical PGa star...
  • Magnetic properties of {omega} Ori

    One hundred and twenty-five new high-precision spectropolarimetric observations have been obtained with ESPaDOnS (Eschelle Spectro-Polarimetric Device for the Observation of...
  • H{alpha} variations of O9 subgiant HD57682

    The O9IV star HD 57682, discovered to be magnetic within the context of the Magnetism in Massive Stars (MiMeS) survey in 2009, is one of only eight convincingly detected...
  • Polarisation and magnetic fields in Ap stars

    In this paper we describe and evaluate new spectral line polarization observations obtained with the goal of mapping the surfaces of magnetic Ap stars in great detail. One...
  • Pulsars in {gamma}-ray sources

    Machine learning, algorithms designed to extract empirical knowledge from data, can be used to classify data, which is one of the most common tasks in observational astronomy....
  • Energy distribution in pulsars

    We report on the pulse-to-pulse energy distributions and phase-resolved modulation properties for catalogued pulsars in the southern High Time Resolution Universe...
  • Multifrequency fluxes of 280 pulsars

    Table3 contains the flux density measurements of pulsars made at radio frequencies centred around 408, 606, 925, 1408 and 1606MHz using the 76-m Lowell telescope at Jodrell...
  • Pulsar glitches

    We study the expectancy of large glitches ({Delta}{Omega}/{Omega}>10^-7) from a sample of 430 pulsars other than the Vela pulsar. The pulsars in this sample have exhibited 19...
  • Strong DES lens candidates from neural networks

    We search Dark Energy Survey (DES) Year 3 imaging for galaxy-galaxy strong gravitational lenses using convolutional neural networks, extending previous work with new training...
  • Small-scale magnetic flux ropes in the solar wind

    We have developed a new automated small-scale magnetic flux ropes (SSMFR) detection algorithm based on the Grad-Shafranov (GS) reconstruction technique. We have applied this...
  • Spectroscopy of 26 lensing cluster cores

    We present results from a spectroscopic program targeting 26 strong-lensing cluster cores that were visually identified in the Sloan Digital Sky Survey (SDSS; Gladders et al....
  • Multipoint coronal mass ejections events

    We report the result of the first search for multipoint in situ and imaging observations of interplanetary coronal mass ejections (ICMEs) starting with the first Solar Orbiter...
  • LIGO/Virgo third observing run (O3) public alerts

    Searches for electromagnetic counterparts of gravitational-wave signals have redoubled since the first detection in 2017 of a binary neutron star merger with a gamma-ray burst,...
  • Small-scale magnetic flux ropes from PSP

    We report small-scale magnetic flux ropes via the in situ measurements from the Parker Solar Probe during the first six encounters, and present additional analyses to supplement...
  • X-ray/UV/opt counterparts of 4FGL gamma-ray sources

    The Fermi-LAT unassociated sources represent some of the most enigmatic gamma-ray sources in the sky. Observations with the Swift-XRT and -UVOT telescopes have identified...
  • Disturbance storm time index; 1903 Sun outburst

    While the Sun is generally more eruptive during its maximum and declining phases, observational evidence shows certain cases of powerful solar eruptions during the quiet phase...
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