C. Guidorzi
1. Astrophysics Research Institute, Liverpool John Moores University, Twelve Quays House, Birkenhead, CH41 1LD, UK

A. Monfardini
1. Astrophysics Research Institute, Liverpool John Moores University, Twelve Quays House, Birkenhead, CH41 1LD, UK; 2. ITC–IRST and INFN, Trento, via Sommarive, 18 38050 Povo (TN), Italy

A. Gomboc
1. Astrophysics Research Institute, Liverpool John Moores University, Twelve Quays House, Birkenhead, CH41 1LD, UK; 3. Faculty of Mathematics and Physics, University in Ljubljana, Jadranska 19, 1000 Ljubljana, Slovenia

C. G. Mundell
1. Astrophysics Research Institute, Liverpool John Moores University, Twelve Quays House, Birkenhead, CH41 1LD, UK

I. A. Steele
1. Astrophysics Research Institute, Liverpool John Moores University, Twelve Quays House, Birkenhead, CH41 1LD, UK

D. Carter
1. Astrophysics Research Institute, Liverpool John Moores University, Twelve Quays House, Birkenhead, CH41 1LD, UK

M. F. Bode
1. Astrophysics Research Institute, Liverpool John Moores University, Twelve Quays House, Birkenhead, CH41 1LD, UK

R. J. Smith
1. Astrophysics Research Institute, Liverpool John Moores University, Twelve Quays House, Birkenhead, CH41 1LD, UK

C. J. Mottram
1. Astrophysics Research Institute, Liverpool John Moores University, Twelve Quays House, Birkenhead, CH41 1LD, UK

M. J. Burgdorf
1. Astrophysics Research Institute, Liverpool John Moores University, Twelve Quays House, Birkenhead, CH41 1LD, UK

N. R. Tanvir
4. Centre for Astrophysics Research, University of Hertfordshire, Hatfield AL10 9AB, UK

N. Masetti
5. INAF - Istituto di Astrofisica Spaziale e Fisica Cosmica, Sezione di Bologna, Via Gobetti 101, I-40129 Bologna, Italy (formerly IASF/CNR, Bologna)

E. Pian
6. Osservatorio Astronomico di Trieste, Via G.B. Tiepolo 11, 34131 Trieste, Italy