Correlation between X-ray and radio absorption in compact radio galaxies

Compact radio galaxies with a GHz-peaked spectrum (GPS) and/or compact-symmetric-object (CSO) morphology (GPS/CSOs) are increasingly detected in the X-ray domain. Their radio and X-ray emissions are affected by significant absorption. However, the locations of the X-ray and radio absorbers are still debated. We investigated the relationship between the column densities of the total ($N_{\mathrm{H}}$) and neutral ($N_{\mathrm{HI}}$) hydrogen to statistically constrain the picture. We compiled a sample of GPS/CSOs including both literature data and new radio data that we acquired with the Westerbork Synthesis Radio Telescope for sources whose X-ray emission was either established or under investigation. In this sample, we compared the X-ray and radio hydrogen column densities, and found that $N_{\mathrm{H}}$ and $N_{\mathrm{HI}}$ display a significant positive correlation, with $N_{\mathrm{HI}} \propto N_{\mathrm{H}}^b$, where $b=0.47$ and $b=0.35$, depending on the subsample. The $N_{\mathrm{H}}$ - $N_{\mathrm{HI}}$ correlation suggests that the X-ray and radio absorbers are either co-spatial or different components of a continuous structure. The correlation displays a large intrinsic spread that we suggest to originate from fluctuations, around a mean value, of the ratio between the spin temperature and the covering factor of the radio absorber, $T_{\rm s}/C_{\rm f}$.Comment: 18 pages, 5 figures, 6 tables; final version: a few typos corrected, minor style change

Constraining Emission Models of Luminous Blazar Sources

Many luminous blazars which are associated with quasar-type active galactic nuclei display broad-band spectra characterized by a large luminosity ratio of their high-energy (gamma-ray) and low-energy (synchrotron) spectral components. This large ratio, reaching values up to 100, challenges the standard synchrotron self-Compton models by means of substantial departures from the minimum power condition. Luminous blazars have also typically very hard X-ray spectra, and those in turn seem to challenge hadronic scenarios for the high energy blazar emission. As shown in this paper, no such problems are faced by the models which involve Comptonization of radiation provided by a broad line-region, or dusty molecular torus. The lack or weakness of bulk Compton and Klein-Nishina features indicated by the presently available data favors production of gamma-rays via up-scattering of infrared photons from hot dust. This implies that the blazar emission zone is located at parsec-scale distances from the nucleus, and as such is possibly associated with the extended, quasi-stationary reconfinement shocks formed in relativistic outflows. This scenario predicts characteristic timescales for flux changes in luminous blazars to be days/weeks, consistent with the variability patterns observed in such systems at infrared, optical and gamma-ray frequencies. We also propose that the parsec-scale blazar activity can be occasionally accompanied by dissipative events taking place at sub-parsec distances and powered by internal shocks and/or reconnection of magnetic fields. These could account for the multiwavelength intra-day flares occasionally observed in powerful blazars sources.Comment: 34 pages, accepted for publication in the Astrophysical Journa

Conceptual Design and Planning for the Environment of Chicago Area Health Clinics by Access Community Health (Semester Unknown) IPRO 340: Conceptual Design and Planning for the environment of Chicago Area IPRO 340 Meeting Minutes Sp08

IPRO 340 is focused on the Conceptual Design and planning for Chicago Area health clinics by Access Community Health Network. The quality of health care today has definitely progressed over time and is continually progressing. As technology advances drive us into the 21st century new cures and medical practices are emerging, solving issues that could not be tackled before. But the problem of utilizing these cures and practices to serve the underinsured or financially challenged families is still an evident problem. Our IPRO will prepare the design related information for building a Health Care Center for the Future. This information consists of the legal regulations posed by JCAHO (Joint Commission of Accreditations for Healthcare Organizations), site visits and audits, and a program booklet for the design of the actual Facility. This information will be reinforced in process maps and research done on state of the art technology for healthcare centers and utilized in further developing the facility program and design. Our IPRO believes the facility should be designed to maximize efficiency, effectiveness, and quality of health care.Deliverable

Conceptual Design and Planning for the Environment of Chicago Area Health Clinics by Access Community Health (Semester Unknown) IPRO 340: Conceptual Design and Planning for the environment of Chicago Area IPRO 340 Project Plan Sp08

IPRO 340 is focused on the Conceptual Design and planning for Chicago Area health clinics by Access Community Health Network. The quality of health care today has definitely progressed over time and is continually progressing. As technology advances drive us into the 21st century new cures and medical practices are emerging, solving issues that could not be tackled before. But the problem of utilizing these cures and practices to serve the underinsured or financially challenged families is still an evident problem. Our IPRO will prepare the design related information for building a Health Care Center for the Future. This information consists of the legal regulations posed by JCAHO (Joint Commission of Accreditations for Healthcare Organizations), site visits and audits, and a program booklet for the design of the actual Facility. This information will be reinforced in process maps and research done on state of the art technology for healthcare centers and utilized in further developing the facility program and design. Our IPRO believes the facility should be designed to maximize efficiency, effectiveness, and quality of health care.Deliverable

Conceptual Design and Planning for the Environment of Chicago Area Health Clinics by Access Community Health (Semester Unknown) IPRO 340: Conceptual Design and Planning for the environment of Chicago Area IPRO 340 Midterm Report Sp08

IPRO 340 is focused on the Conceptual Design and planning for Chicago Area health clinics by Access Community Health Network. The quality of health care today has definitely progressed over time and is continually progressing. As technology advances drive us into the 21st century new cures and medical practices are emerging, solving issues that could not be tackled before. But the problem of utilizing these cures and practices to serve the underinsured or financially challenged families is still an evident problem. Our IPRO will prepare the design related information for building a Health Care Center for the Future. This information consists of the legal regulations posed by JCAHO (Joint Commission of Accreditations for Healthcare Organizations), site visits and audits, and a program booklet for the design of the actual Facility. This information will be reinforced in process maps and research done on state of the art technology for healthcare centers and utilized in further developing the facility program and design. Our IPRO believes the facility should be designed to maximize efficiency, effectiveness, and quality of health care.Deliverable

Conceptual Design and Planning for the Environment of Chicago Area Health Clinics by Access Community Health (Semester Unknown) IPRO 340: Conceptual Design and Planning for the environment of Chicago Area IPRO 340 Brochure Sp08

IPRO 340 is focused on the Conceptual Design and planning for Chicago Area health clinics by Access Community Health Network. The quality of health care today has definitely progressed over time and is continually progressing. As technology advances drive us into the 21st century new cures and medical practices are emerging, solving issues that could not be tackled before. But the problem of utilizing these cures and practices to serve the underinsured or financially challenged families is still an evident problem. Our IPRO will prepare the design related information for building a Health Care Center for the Future. This information consists of the legal regulations posed by JCAHO (Joint Commission of Accreditations for Healthcare Organizations), site visits and audits, and a program booklet for the design of the actual Facility. This information will be reinforced in process maps and research done on state of the art technology for healthcare centers and utilized in further developing the facility program and design. Our IPRO believes the facility should be designed to maximize efficiency, effectiveness, and quality of health care.Deliverable