Conferencias y seminarios
Jueves 30 de Noviembre de 2017
Sala de Conferencias Federico Ristenpart (Camino El Observatorio 1515, Departamento de Astronomía, Edificio Central, piso 3, Las Condes, Santiago, Chile)
Dr. Matías Vidal
Universidad de Chile/DAS/MAD
Diffuse Galactic emission in the microwave range.
The microwave sky between 10 and 100 GHz is where the Cosmic Microwave Background (CMB) is preferentially observed. This frequency range includes contributions from different types of Galactic emission that act as a foreground to the CMB. In order to produce CMB maps, it is necessary to understand and characterize the different components: synchrotron, free-free, anomalous microwave emission (AME) and thermal dust emission. I will discuss the diffuse Galactic emission on large angular scales as seen by the Planck satellite. I will also show results in polarization, where we combine Planck and WMAP maps to produce the most sensitive map in this frequency range. Additionally, I will present results and ongoing work on AME from individual clouds.
AME is thought to be due to dipole emission from fast rotating dust grains but the precise mechanism is still a matter of debate. I will also talk about how ALMA band 1 and 2 could help to understand the physics of the AME emitters, and in turn how AME can be used to characterize the physics of the ISM.
Rene A. Mendez
DAS/UChile - firstname.lastname@example.org
Comunicaciones Depto. Astronomía FCFM U. de Chile