Departamento de Astrofísica

Oct 14, 2024 | academic.oup.com | Blackett Laboratory |Keble Road |Departamento de Astrofísica

High-redshift protoclusters consisting of dusty starbursts are thought to play an important role in galaxy evolution. Their dusty nature makes them bright in the FIR/submm but difficult to find in optical/NIR surveys. Radio observations are an excellent way to study these dusty starbursts, as dust is transparent in the radio and there is a tight correlation between the FIR and radio emission of a galaxy.

Oct 9, 2024 | academic.oup.com | Departamento de Astrofísica

The current perspective about the explosions of massive hydrogen-rich blue supergiants is that they resemble SN 1987A. These so-called peculiar Type II supernovae, however, are one of the rarest types of supernovae and may not hence be the fate of all blue supergiants. In this work, we explore other explosion scenarios for blue supergiants. We create synthetic light curves from the explosions of blue supergiant models born from binary mergers, over a range of explosion energies and masses.

May 31, 2024 | academic.oup.com | Departamento de Astrofísica |Space Exploration |An OCC |Université PSL

We present a Bayesian inference method to characterise the dust emission properties using the well-known dust- correlation in the diffuse interstellar medium at Planck frequencies ν ≥ 217 GHz. We use the Galactic map from the Galactic All-Sky Survey (GASS) as a template to trace the Galactic dust emission. We jointly infer the pixel-dependent dust emissivity and the zero level present in the Planck intensity maps.

Mar 21, 2024 | aanda.org | Ciudad Universitaria |Departamento de Astrofísica |M. Alarcón |J. Licandro

Home All issues Volume 683 (March 2024) A&A, 683 (2024) L14 Full HTML Issue A&A Volume 683, March 2024 Article Number L14 Number of page(s) 6 Section Letters to the Editor DOI https://doi.org/10.1051/0004-6361/202449688 Published online 21 March 2024 A&A, 683, L14 (2024) Letter to the Editor Dynamics of 2023 FW14, the second L4 Mars trojan, and a physical characterization using the 10.4 m Gran Telescopio Canarias⋆ 1, 2,3, 4, 2,3, 2,3, 2,3,5, 6,2 and 6,2,3 1 AEGORA Research Group, Facultad de...

Feb 2, 2024 | academic.oup.com | Liverpool John Moores |Departamento de Astrofísica

Blazars are a highly variable subclass of active galactic nuclei that have been observed to vary significantly during a single night. This intranight variability remains a debated phenomenon, with various mechanisms proposed to explain the behaviour including jet energy density evolution or system geometric changes. We present the results of an intranight optical monitoring campaign of four blazars: TXS 0506+056, OJ287, PKS 0735+178, and OJ248 using the Carlos Sánchez Telescope.