The Dynamic Radio Sky

The Dynamic Radio Sky: An Opportunity for Discovery

The Faint Radio Sky

Radio source contributions to the microwave sky

Cross-correlations of theWilkinson Microwave Anisotropy Probe (WMAP) full sky K-, Ka-, Q-, V-, and W-band maps with the 1.4 GHz NVSS source count map and the HEAO I A2 2–10 keV full sky X-ray flux map are used to constrain rms fluctuations due to unresolved microwave sources in theWMAP frequency range. In the Q band (40.7 GHz), a lower limit, taking account of only those fluctuations correlated...

Surveying the Dynamic Radio Sky with the Long Wavelength Demonstrator Array

This paper presents a search for radio transients at a frequency of 73.8 MHz (4 m wavelength) using the all-sky imaging capabilities of the Long Wavelength Demonstrator Array (LWDA). The LWDA was a 16-dipole phased array telescope, located on the site of the Very Large Array in New Mexico. The field of view of the individual dipoles was essentially the entire sky, and the number of dipoles was ...

Imprint of Intergalactic Shocks on the Radio Sky

Strong intergalactic shocks are a natural consequence of structure formation in the universe. These shocks are expected to deposit large fractions of their thermal energy in relativistic electrons (ξe ≃ 0.05 according to supernova remnant observations) and magnetic fields (ξB ≃ 0.01 according to cluster halo observations). We calculate the synchrotron emission from such shocks using an analytic...