Radio-active Transformations

The Radio Active Ash

Radio Active Ash: A Portscript

The Difference between Radio-loud and Radio-quiet Active Galaxies

The recent development of unified theories of active galactic nuclei (AGN) has indicated that there are two physically distinct classes of these objects radio-loud and radio-quiet. The primary observational distinctions between the two types are: (1) The radio-loud objects produce large scale radio jets and lobes, with the kinetic power of the jets being a significant fraction of the total bolo...

Radio loud and radio quiet active galactic nuclei

We have generated a sample of 409 active galactic nuclei (AGNs) for which both the radio luminosity at 5 GHz and the line luminosity in [O III] j5007 have been measured. The radio luminosity spans a range of 10 orders of magnitude, and the [O III] line luminosity spans a range of 8 orders of magnitudeÈboth considerably larger than the ranges in previous studies. We show that these two quantitie...

Energy-Efficient Cognitive Radio Sensor Networks: Parametric and Convex Transformations

Designing energy-efficient cognitive radio sensor networks is important to intelligently use battery energy and to maximize the sensor network life. In this paper, the problem of determining the power allocation that maximizes the energy-efficiency of cognitive radio-based wireless sensor networks is formed as a constrained optimization problem, where the objective function is the ratio of netw...