Publication type: Refereed

  • Publication
    An X-Ray and Radio View of the 2022 Reactivation of the Magnetar SGR J1935+2154
    Recently, the Galactic magnetar SGR J1935+2154 has garnered attention due to its emission of an extremely luminous radio burst, reminiscent of fast radio bursts...
  • Publication
    An X-ray study of the open clusters NGC 2451 A and B
    We have conducted a detailed study of the object NGC 2451, which actually consists of two different open clusters A and B along the same line of sight at 206 pc...
  • Publication
    An X-ray view of 82 LINERs with Chandra and XMM-Newton data
    We present the results of a homogeneous X-ray analysis for 82 nearby low-ionisation, narrow emission-line regions (LINERs) selected from the catalogue of...
  • Publication
    An X-ray-quiet black hole born with a negligible kick in a massive binary within the Large Magellanic Cloud
    Stellar-mass black holes are the final remnants of stars born with more than 15 solar masses. Billions are expected to reside in the Local Group, yet only a few...
  • Publication
    An XMM-Newton observation of the neutron star X-ray transient 2S 1803-245 in quiescence
    We observed the neutron star X-ray transient 2S 1803-245 in quiescence with the X-ray satellite XMM-Newton, but did not detect it. An analysis of the X-ray...
  • Publication
    An `outside-in' outburst of AQL X-1
    We present optical spectroscopy and optical and infrared photometry of the neutron star soft X-ray transient Aql X-1 during its X-ray outburst of 1997 August...
  • Publication
    Analysing the structure of the bulge with Mira variables
    Context. The Galactic bulge at latitude 4 < |b|(deg) < 10 was claimed to show an X-shape, which means that stellar density distributions along the line of sight...
  • Publication
    Analysis and calibration of CaII triplet spectroscopy of red giant branch stars from VLT/FLAMES observations
    We demonstrate that low-resolution CaII triplet (CaT) spectroscopic estimates of the overall metallicity ([Fe/H]) of individual red giant branch (RGB) stars in...
  • Publication
    Analysis and modeling of high temporal resolution spectroscopic observations of flares on AD Leonis
    We report the results of a high temporal resolution spectroscopic monitoring of the flare star AD Leo. During 4 nights, more than 600 spectra were taken in the...