We study the effect of Faraday rotation due to a uniform magnetic field on the polarization of the cosmic microwave background. Scalar fluctuations give rise only to parity-even E-type polarization of the cosmic microwave background. However in the presence of a magnetic field, a nonvanishing parity-odd B-type polarization component is produced

We present Hα spectroscopic observations and detailed modeling of the Balmer filaments in the supernova remnant (SNR) Tycho (SN 1572). We used GH α FaS (Galaxy Hα Fabry–Pérot Spectrometer) on the William Herschel Telescope with a 3.‧4 × 3.‧4 field of view, 0.″2 pixel scale, and {σ }{instr}=8.1 km s‑1 resolution at 1″ seeing for ∼10 hr, resulting in

Aims.We present reflectance spectra of three V-type Near-Earth Objects obtained at the 3.6 m Telescopio Nazionale Galileo and at the 2.5 m Nordic Optical Telescope covering the near-infrared and visible range, respectively. The range from 0.5 to 2.5 μm, encompassing the 1 and 2 μm pyroxene features, allows a mineralogical characterization of these

We present a compositional classification of 374 V-type asteroids selected from the MOVIS catalogue. The classification was made by comparing the V-types colors with those of a sample of 65 HED(Howardites, Eucrites, Diogenites) meteorites from RELAB database. We found that 51 % of the V-type asteroids can be associated with Eucrites, 29 % with

We introduce PHI, a fully Bayesian Markov chain Monte Carlo algorithm designed for the structural decomposition of galaxy images. PHI uses a triple layer approach to effectively and efficiently explore the complex parameter space. Combining this with the use of priors to prevent non-physical models, PHI offers a number of significant advantages for

We present Belgrade astronomical community web site the purpose of which is to provide basic information about students graduated from the Department of Astronomy, Faculty of Mathematics, University of Belgrade, as well as about our current students and friends worldwide, and to help them communicating. BAZA (from Serbian: Beogradska Astronomska