Publications (7)
The variability of active galaxies: I. Broad-band noise X-ray power spectra from XMM-Newton and Swift
Mehdy Lefkir, Simon Vaughan, Mike Goad +2
Accreting supermassive black holes at the centres of galaxies are the engine of active galactic nuclei (AGN). X-ray light curves of unabsorbed AGN show dramatic random variability…
Investigating the Variable Continuum Lags in PG 2130+099
Jake A. Miller, Edward M. Cackett, Mike Goad +1
Broadband photometric reverberation mapping (RM) provides a measure of the size of the continuum-emitting region in active galactic nuclei (AGN). Previous monitoring campaigns of P…
Searching for the signature of radiative line driving: On the absence of Ly-alpha-N V line-locking features in a large sample of BALQSOs
Chris Cottis, Mike Goad, Christian Knigge +1
We have searched the hybrid BALQSO catalogue of Scaringi et al. derived from DR5 of the SDSS in order to compile the largest sample of objects displaying spectral signatures which…
Departures from Standard Disk Predictions in Intensive Ground-Based Monitoring of Three AGN
Diego Gonzalez-Buitrago, Aaron J. Barth, Rick Edelson +42
We present ground-based, multi-band light curves of the AGN Mrk~509, NGC\,4151, and NGC\,4593 obtained contemporaneously with \sw\, monitoring. We measure cross-correlation lags re…
A Systematic Search for Changing-Look Quasars in SDSS
Chelsea L. MacLeod, Nicholas P. Ross, Andy Lawrence +10
We present a systematic search for changing-look quasars based on repeat photometry from SDSS and Pan-STARRS1, along with repeat spectra from SDSS and SDSS-III BOSS. Objects with l…
GRB 060607A: A GRB with Bright Asynchronous Early -ray and Optical Emissions
Houri Ziaeepour, Stephen T. Holland, Patricia T. Boyd +8
The early optical emission of the moderately high redshift () GRB 060607A shows a remarkable broad and strong peak with a rapid rise and a relatively slow power-law decay.…
The Next Generation Transit Survey - Prototyping Phase
James McCormac, Don Pollacco, Peter Wheatley +16
We present the prototype telescope for the Next Generation Transit Survey, which was built in the UK in 2008/09 and tested on La Palma in the Canary Islands in 2010. The goals for…