Mansur Ibrahimov

TL;DR: The first indications of a class of long GRBs are presented, which form a bridge between the typical high-luminosity, high-redshift events and nearby low- luminosity events (which are also associated with spectroscopic supernovae) in terms of energetics and observed redshift distribution, indicating a continuous distribution overall.

TL;DR: In this article, the authors investigate the accretion and outflow dynamics and their interaction from observations of the classical T T Tauri star AA Tau, and they find that most spectral and photometric diagnostics vary as expected from models of magnetically-channelled accretion in young stars, with a large scale magnetosphere tilted by 20 degrees onto the star spin axis.

TL;DR: In this article, a long time series of high-resolution HARPS spectra and simultaneous broad-band photometry was used to detect magnetospheric accretion and ejection processes in the nearly edge-on T Tauri star AA Tau.

TL;DR: In this article, the authors report the results of a synoptic study of the photometric and spectroscopic variability of the T Tauri star AA Tau on timescales ranging from a few hours to several weeks.

TL;DR: In this article, the authors presented a wide optical and radio database of the BL Lac object 0716+714, which consists of 4854 data points collected in the UBVRI bands since 1994, while radio light curves extend back to 1978.