Esta tesis está dedicada al estudio de la emisión galáctica difusa y las anisotropías de la radiación cósmica de microondas por medio de las observaciones del experimento COSMOSOMAS. También se analizan estas emisiones en los mapas de WMAP, publicados tras el primer año de operación del satélite. Se presentan los mapas de COSMOSOMAS a 12.7, 14.7 y

The recent detection of multiple harmonic standing transverse oscillations in coronal loops by Verwichte et al. is of special importance, as it allows one to obtain information on the longitudinal density variation in loops. Verwichte et al. detected the simultaneous presence of both the fundamental and the first-overtone mode in two coronal loops

We present direct evidence for anomalous microwave emission in the Perseus molecular cloud, which shows a clear rising spectrum from 11 to 17 GHz in the data from the COSMOSOMAS experiment. By extending the frequency coverage using W ilkinson Microwave Anisotropy Probe maps convolved with the COSMOSOMAS scanning pattern, we reveal a peak flux

As part of ELAIS, ISOCAM observations were carried out covering 10.3deg2 at 15um. The observations were carried out in raster mode, with most of the survey area confined to three northern fields (N1, 2.67deg2; N2, 2.67deg2; N3, 0.88deg2) (2 data files).

We carried out CCD observations on 39 nights from September, 1999 to February, 2003. Standard Johnson R filtered and unfiltered data were obtained, using the 60/90/180cm Schmidt-telescope of the Konkoly Observatory. (3 data files).

High-resolution UCLES/AAT spectra are presented for nine B-type supergiants in the SMC, chosen on the basis that they may show varying amounts of nuclear-synthetically processed material mixed to their surface. These spectra have been analysed using a new grid of approximately 12 000 non-LTE line blanketed tlusty model atmospheres to estimate