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The jet compositions of gamma-ray bursts (GRBs) are very important to understand the energy dissipation and radiation mechanisms, but it remains an open question in GRB physics. In this paper, we present a systematic analysis to search for 88 bright GRBs that include a total of 129 pulses observed … 
Giant radio haloes are diffuse synchrotron sources typically found in merging galaxy clusters, while smaller mini-haloes occur in cool-core clusters. Both trace cosmic-ray electrons in the intracluster medium, though recent observations suggest their distinction is not always clear. We present new … 
We present results from a seven-season (2018–2024) monitoring campaign of the gravitationally lensed quasar system PS J2305+3714 using the 1.5-m Maidanak Telescope in the optical R band. We measure a time delay of $t_{\mathrm{ AB}} = 52.2 \pm 2.5$ d, with the brighter image A leading. No … 
Recent low-frequency array (LOFAR) radio signal detections bearing from the $\tau$ Boötis system have been cautiously attributed to auroral emissions from the hot Jupiter $\tau$ Boötis Ab. The auroral emissions are believed to be excited by interaction between the exoplanet and the winds of its … 
We present a comparative spectroscopic analysis of 47 samples, including Main-Belt Asteroids (MBAs), carbonaceous chondrites, and hydrated minerals, focusing on the 0.7, 2.7, and 3.0 $\mu$ m hydration bands. Spectral features were extracted and compared to infer the surface mineralogy of MBAs and … 
In this paper, we develop a Neural Likelihood Estimator and apply it to analyse real gravitational-wave (GW) data for the first time. We assess the usability of neural likelihood for GW parameter estimation and report the parameter space where neural likelihood performs as a robust estimator to … 
The next generation of imaging surveys, including the Vera C. Rubin Observatory Legacy Survey of Space and Time (LSST), Euclid, and the Nancy Grace Roman Space Telescope , will provide unprecedented constraints on cosmology using weak gravitational lensing. To fully exploit this statistical power, … 
The near-infrared calcium ii triplet (CaT), around 850 nm, is a key metallicity indicator for red giant stars. We present a revised [Fe/H] calibration as a function of CaT line strengths and four luminosity indicators, including the Gaia G band, together with the classical V, I , and $K_s$ …