Publications

  • Doubling of minute-long quasi-periodic pulsations from super-flares on a low-mass star

    Using the ULTRASPEC instrument mounted on the 2.4-m Thai National Telescope, we observed two large flares, each with a total energy close to 1034 erg with sub-second cadence. A combination of a wavelet analysis, a Fourier transform plus an empirical mode decomposition, reveals quasi-periodic pulsations (QPPs) that exhibit an apparent doubling of

    Doyle, J. Gerry et al.

    Advertised on:

    8
    2022
  • Extragalactic observatory science with the ASTRI mini-array at the Observatorio del Teide

    The ASTRI Mini-Array is a next-generation system of nine imaging atmospheric Cherenkov telescopes that is going to be built at the Observatorio del Teide site. After a first phase, in which the instrument will be operated as an experiment prioritizing a schedule of primary science cases, an observatory phase is foreseen in which other significant

    Saturni, F. G. et al.

    Advertised on:

    8
    2022
  • OGLE-2018-BLG-0799Lb: a q 2.7 × 10<SUP>-3</SUP> planet with Spitzer parallax

    We report the discovery and analysis of a planet in the microlensing event OGLE-2018-BLG-0799. The planetary signal was observed by several ground-based telescopes, and the planet-host mass ratio is q = (2.65 ± 0.16) × 10-3. The ground-based observations yield a constraint on the angular Einstein radius θE, and the microlensing parallax vector $

    Zang, Weicheng et al.

    Advertised on:

    8
    2022
  • Stellar migration in the Auriga simulations

    We study the presence and importance of stellar migration in the evolution of 17 Milky-Way like disc galaxies with stellar mass 10 < log(M*/M⊙) < 11 from the Auriga suite of zoom-in cosmological hydrodynamical simulations. We compare the birth radii of the stars to their radii at z = 0 for each system and present mean values of the strength of

    Okalidis, Periklis et al.

    Advertised on:

    8
    2022
  • The dark energy survey 5-yr photometrically identified type Ia supernovae

    As part of the cosmology analysis using Type Ia Supernovae (SN Ia) in the Dark Energy Survey (DES), we present photometrically identified SN Ia samples using multiband light curves and host galaxy redshifts. For this analysis, we use the photometric classification framework SUPERNNOVAtrained on realistic DES-like simulations. For reliable

    Möller, A. et al.

    Advertised on:

    8
    2022
  • Velocity dispersions of clusters in the Dark Energy Survey Y3 redMaPPer catalogue

    We measure the velocity dispersions of clusters of galaxies selected by the red-sequence Matched-filter Probabilistic Percolation (redMaPPer) algorithm in the first three years of data from the Dark Energy Survey (DES), allowing us to probe cluster selection and richness estimation, λ, in light of cluster dynamics. Our sample consists of 126

    Wetzell, V. et al.

    Advertised on:

    8
    2022