[Todos] IAFE-Coloquios: "Taking Chandra to the limit: imaging and spectra"]

[difusion en iafe.uba.ar]

______________________________________________________________
                    PRÓXIMO COLOQUIO DEL IAFE
                 Instituto de Astronomía y Física del Espacio
                           CONICET-UBA
 __________________________________________________________________


             "Taking Chandra to the limit: imaging and spectra"

                           Gerando Juan Manuel Luna
       Center for Astrophysics/Smithsonian Astrophysical Observatory, USA

                     Miercoles 22 de junio 2011, 14:30hs.
                    Aula del Edificio IAFE - Ciudad Universitaria
     Cómo llegar: http://www.iafe.uba.ar/docs/contacto.html#mapa


Abstract: I will review recent results obtained with the Chandra X-ray
Observatory on three sources, EX Hya, CCO Cas A and RS Oph.

In a 500 ks Chandra/HETG observation of the intermeciate polar EX Hya, we
were able to detect for the first time photoionized features previously
hidden under strong collisionally excited emission lines.

We obtained the, so far, cleanest spectrum of the Central Compact Object
of the SNR Cas A. The spectrum, light curve and image of this "unknown"
compact object allowed us to put tight constrains on its nature.

The high spatial resolution of Chandra, combined with powerful image
deconvolution techniques allowed us to detect, for the first time, an
extended structure in the ejecta of the recurrent nova RS Oph, which
apparently was generated during the last outburst in 2006.

I will discuss some of the implication and possible origins of these
detections in the context of accretion onto intermediate polars, the study
of compact objects in SNR and mass ejection from recurrent nova.
------------ próxima parte ------------
Se ha borrado un adjunto en formato HTML...
URL: http://mail.df.uba.ar/pipermail/todos/attachments/20110613/737e7548/attachment.html