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We present the First Cosmic Gamma-ray Horizon (1CGH) catalogue, featuring $\gamma$ -ray detections above 10 GeV based on 16 yr of observations with the Fermi Large Area Telescope ( Fermi -LAT) satellite. After carefully selecting a sample of blazars and blazar candidates from catalogues in the ...
In recent years, high-precision high-cadence space photometry has revealed that stochastic low-frequency (SLF) variability is common in the light curves of massive stars. We use the data from the Transiting Exoplanet Survey Satellite to study and characterize the SLF variability found in a sample ...
We develop a method for constraining the potential of the Milky Way using stellar streams with a known progenitor. The method expresses the stream in angle-action coordinates and integrates the orbits of the stars backwards in time to obtain the stripping point positions of the stream stars ...
We have generated 2D-multicomponent surface brightness (SB) modelling for 100 galaxies in the Large Galaxy Atlas (LGA) together with 19 nearby cD galaxies using the near-infrared (NIR) images from 2MASS ( $J, H, {\, \rm and}\, K_s$ ). Our final sample of 119 galaxies includes cD galaxies, Virgo ...
Recent work has suggested that, during reionization, spatial variations in the ionizing radiation field should produce enhanced Ly $\alpha$ forest transmission at distances of tens of comoving Mpc from high-redshift galaxies. We demonstrate that the Sherwood–Relics suite of hybrid ...
This paper presents the results of a detailed timing and spectral analysis of the TeV-detected blazar 1ES 1218 $+$ 304, focused on the observations performed with the different instruments onboard the Neil Gehrels Swift Observatory in the period 2005–2024. The source showed various strengths of ...
GW170817 is the first binary neutron star merger detected with gravitational and electromagnetic waves, and its afterglow is still detectable 7 yr post-merger. Some previous studies of the X-ray afterglow have claimed the onset of a new afterglow component or raised concerns about the data ...
Galactic open clusters (OCs) are subject to internal and external destructive effects that gradually deplete their stellar content, leaving imprints on their structure. To investigate their dynamical state from an observational perspective, we employed Gaia DR3 data to perform a comprehensive ...
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5 year Impact Factor
4.7
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