Search Publications
Does the Fe L-shell blend bias abundance measurements in intermediate-temperature clusters?
Grillo, Claudio; Gastaldello, Fabio; Bartalucci, Iacopo +5 more
In intermediate-mass galaxy clusters (M = 2 − 4 × 1014 M⊙, or equivalently T = 2.5 − 4.5 keV), abundance measurements are almost equally driven by iron K and L transitions at ∼6.7 keV and 0.9 − 1.3 keV, respectively. While K-shell-derived measurements are considered reliable, the resolution of the currently available instrume…
Stellar population in the vicinity of the H II region G331.03-00.15
Gamen, R.; Cichowolski, S.; Cárdenas, S. B. +1 more
We present a multi-wavelength study of the H II region G331.03-00.15, with the aim of identifying the population of massive stars associated with it. The distributions of ionised gas and heated dust both exhibit similar spherical forms, while the bordering photo-dissociating region follows a very ring-like distribution, indicating the presence of …
Detection of the tidal deformation of WASP-103b at 3 σ with CHEOPS (Corrigendum)
Alonso, R.; Bouchy, F.; Deleuil, M. +81 more
Completing the X-ray view of the recently discovered supernova remnant G53.41+0.03
Vink, J.; Zhou, P.; Sun, L. +2 more
Aims: We present a detailed X-ray study of the recently discovered supernova remnant (SNR) G53.41+0.03, which follows up and further expands on the previous, limited analysis of archival data covering a small portion of the SNR.
Methods: With the new dedicated 70 ks XMM-Newton observation we investigate the morphological structure of the…
Improving INTEGRAL/SPI data analysis of GRBs
Greiner, Jochen; Siegert, Thomas; Biltzinger, Björn +1 more
The spectrometer on the international gamma-ray astrophysics laboratory (INTEGRAL/SPI) is a coded mask instrument observing since 2002 in the keV to MeV energy range, which covers the peak of the νFν spectrum of most gamma-ray bursts (GRBs). Since its launch in 2008, the gamma-ray burst monitor (GBM) on board the Fermi satellite has been the prima…
Scaling properties of magnetic field fluctuations in the quiet Sun
Giannattasio, F.; Berrilli, F.; Consolini, G. +1 more
Context. The study of the dynamic properties of small-scale magnetic fields in the quiet photosphere is important for several reasons: (i) it allows us to characterise the dynamic regime of the magnetic field and points out some aspects that play a key role in turbulent convection processes; (ii) it provides details of the processes and the spatia…
Reconstructing AGN X-ray spectral parameter distributions with Bayesian methods. I. Spectral analysis
Paltani, Stéphane; Eckert, Dominique; Ge, Lingsong
X-ray spectra of active galactic nuclei (AGN) consist of several different emission and absorption components. To determine the spectral parameters, these components are often fitted manually with models chosen on a case-by-case basis. However, this approach has two problems. First, it becomes very hard for a survey with a large number of sources.…
Anisotropic nonthermal motions in the transition region of solar active regions
Peter, Hardi; Xia, Lidong; Huang, Zhenghua +1 more
Context. We study the nonthermal motions in the transition region of active regions (ARs) using center-to-limb observations of Si IV 1394 Å and 1403 Å lines.
Aims: The aim of this study is to investigate the characteristics of nonthermal motions in the transition region of ARs using the center-to-limb measurement.
Methods: We used Interf…
Evaluating the feasibility of interpretable machine learning for globular cluster detection
Fahrion, Katja; Dold, Dominik
Extragalactic globular clusters (GCs) are important tracers of galaxy formation and evolution because their properties, luminosity functions, and radial distributions hold valuable information about the assembly history of their host galaxies. Obtaining GC catalogues from photometric data involves several steps which will likely become too time-co…
New insights into the Triangulum Australis supercluster of galaxies
Böhringer, Hans; Lacerna, Ivan; Quintana, Hernán +1 more
The Triangulum Australis cluster is one of about a dozen nearby massive cluster systems which contribute to the gravitational pull behind the so-called Great Attractor that is dominated by the nearby Shapley Supercluster mass, which conforms the galaxy velocity flows observed in that general direction. Here, we study the structure and dynamical ma…