A5106465340- Gamma-ray bursts and supernovae
- Astrophysics and Cosmic Phenomena
- Dark Matter and Cosmic Phenomena
- Astrophysical Phenomena and Observations
Charles University
2025
Czech Academy of Sciences, Astronomical Institute
2025
Universidad Complutense de Madrid
2013-2015
We summarise the properties and nature of a peculiar group B-type stars called FS CMa stars. These show B[e] phenomenon, i.e., their spectra exhibit both forbidden emission lines infrared excess. Such point to an extended circumstellar gas dust component. Although phenomenon has been explained in most stars, origin is disputed. Here, we focus on merger hypothesis, for which evidence recently discovered.
[Abridged] Context. To construct and interpret the spectral energy distribution (SED) of BL Lacertae objects, simultaneous broad-band observations are mandatory. Aims. We present results a dedicated multi-wavelength study high-frequency peaked (HBL) object known TeV emitter 1ES 2344+514 by means pre-organised campaign. Methods. The were conducted during visibility windows MAGIC AGILE in late 2008. measurements complemented Mets\"ahovi, RATAN-600, KVA+Tuorla, Swift VLBA pointings. Additional...