Finding the Electromagnetic Counterparts of Cosmological Standard Sirens
The Astrophysical Journal American Astronomical Society 637:1 (2006) 27-37
Clues from microquasars to the origin of radio-loudness of quasars
International Conference Recent Advances in Natural Language Processing, RANLP (2006)
Abstract:
We analysed the long-term variability of four microquasars (GRS 1915+105, Cyg X-1, Cyg X-3, and Sco X-1) in radio and X rays. The results of our analysis indicate the existence of two distinct modes of energy output, which we refer to as the 'coupled' mode and the 'flaring' mode. The coupled mode is responsible for mildly fluctuating, flat-spectrum radio emission, coupled with the X-ray emission; the flaring mode produces powerful, steep-spectrum radio flares, with no significant counterpart in X rays. We find that the fraction of time spent by a typical microquasar in the flaring mode is similar to the fraction of quasars that are radio-loud. This is consistent with the hypothesis that radio-loudness of quasars is a function of the epoch at which the source is observed.Planet formation and migration
Reports on Progress in Physics 69:1 (2006) 119-180