Solicito a PAPIIT apoyo a seguir las siguientes investiagciónes relacionadas con núcleos activos de galaxias (AGNs) y sus evoluciónes con rayos X: 1. Clustering de gran escala de rayos X seleccionando AGNs y sus implicaciones para el crecimiento de los agujeros negros super masivos. 2. La función de la luminosidad de rayos X de los AGNs. 3. Búsqueda por primeros agujeros negros de la correlación cruzada de las datos de rayos X (Chandra) y infrarrojos (Spitzer) muy profundos. 4. Espectroscopia infrarroja de rayos X seleccionado brillante AGNs muy absorbidos, usando el observatorio espacial infrarrojo Akari. 5. Casi simultáneamente observaciónes de AGNs con la luz visible (SPM) y rayos X.

We intend to contribute to the further understanding of the evolution of SMBH through five main projects. 1. Investigating the cross-correlation function of X-ray-selected AGNs with galaxies in two main regimes: i) Using Galaxies in Sloan Digital Sky Survey and AGNs in the ROSAT All-Sky Survey-based catalog for exploring AGN bias/halo-occupation in the nearby universe. This is in collaboration with Dr. Mirko Krumpe of U. California San Diego (UCSD). ii) Using Galaxies/X-ray AGNs in the COSMOS survey to explore the clustering (bias/halo-occupation) in the intermediate-to high redshift (0.56 by investigating the cross-correlation function of the off-source background field between the deepest X-ray observations from the Chandra X-ray Observatory and near infrared data from Spitzer on the GOODS/Chandra Deep and other Fields. This is in collaboration with N. Cappelluti (Max-Planck) and A. Kashlinsky (NASA/Goddard). 4. Infrared (2.5-5 micron) Spectroscopy of highly absorbed (intrinsic hydrogen column density of >10^{23.5} cm^{-2}) using the Space Infrared Observatory "Akari". This is in collaboration of the Akari Team in Japan. The observations have already been made for a part of the AGNs and is expected to complete in 2008. 5. Quasi-simultaneous X-rays and Optical observations using X-ray observatories and telescopes in the San Pedro Mártir Observatory (SPM). This is in collaboration with the UNAM participants and external X-ray astronomers. i) We join the campaigne by M. Elvis of multiwavelength monitoring of the Seyfert 1 galaxy NGC 3227. Quasi-simultaneously, with the X-ray observatory Suzaku/ Chandra, we will make UBVR photometry and B-band polarimetry six times in approximately in one week intervals in fall 2008 with the SPM 84 cm. (With D. Hiriart and student J. M. López; Y. Krongold (IA-UNAM) is also a participant of the larger campaigne). ii) We will plan to propose quasi-simultaneous observation of the radio-quiet QSO Kaz 102, which showed an unusually hard X-ray spectrum (Miyaji et al. 2003) and variable broad-lines/UV excess (de Diego et al. 1998). (With J. A. de Diego) to SPM 2.1m and Suzaku.