F
Fraser Lewis
Researcher at Cardiff University
Publications - 85
Citations - 1442
Fraser Lewis is an academic researcher from Cardiff University. The author has contributed to research in topics: Neutron star & Light curve. The author has an hindex of 18, co-authored 81 publications receiving 1212 citations. Previous affiliations of Fraser Lewis include University of South Wales & University of New South Wales.
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Journal ArticleDOI
A variable mid-infrared synchrotron break associated with the compact jet in gx 339-4
Poshak Gandhi,Andrew Blain,David M. Russell,Piergiorgio Casella,Julien Malzac,Stephane Corbel,P. D'Avanzo,Fraser Lewis,Sera Markoff,M. Cadolle Bel,P. Goldoni,Stefanie Wachter,Dmitry Khangulyan,Amy Mainzer +13 more
TL;DR: The detection of the black hole binary GX 339-4 with the Wide-field Infrared Survey Explorer (WISE) during a very bright, hard accretion state in 2010 is reported, finding clear spectral curvature in the infrared, associated with the peak flux density expected from the compact jet.
Journal ArticleDOI
Testing the Jet Quenching Paradigm with an Ultradeep Observation of a Steadily Soft State Black Hole
David M. Russell,James Miller-Jones,Thomas J. Maccarone,Y. J. Yang,Rob Fender,Fraser Lewis,Fraser Lewis +6 more
TL;DR: In this article, the authors derived a stringent upper limit of 11.4 {mu}Jy beam{sup -1} (3{sigma}) at 5-7 GHz, which provides the most rigorous upper limit to date on the presence of jets in a soft state BH X-ray binary.
Journal ArticleDOI
Optical spectroscopy and photometry of SAX J1808.4−3658 in outburst
P. Elebert,Mark Reynolds,Paul J. Callanan,Daniel Jason Hurley,Gavin Ramsay,Fraser Lewis,Fraser Lewis,Fraser Lewis,D. M. Russell,Brian Nord,Stephen R. Kane,Darren L. DePoy,Pasi Hakala +12 more
TL;DR: In this paper, phase resolved optical spectroscopy and photometry of V4580 Sagittarii, the optical counterpart to the accretion powered millisecond pulsar SAX J1808.
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An Evolving Compact Jet in the Black Hole X-Ray Binary MAXI J1836–194
David M. Russell,David M. Russell,Thomas D. Russell,James Miller-Jones,Kieran O'Brien,Roberto Soria,G. R. Sivakoff,T. Slaven-Blair,Fraser Lewis,Fraser Lewis,Sera Markoff,Jeroen Homan,Diego Altamirano,P. A. Curran,Michael P. Rupen,Tomaso Belloni,M. Cadolle Bel,Piergiorgio Casella,Stephane Corbel,Vivek Dhawan,Rob Fender,Elena Gallo,Poshak Gandhi,Poshak Gandhi,Sebastian Heinz,Elmar Körding,Hans A. Krimm,Hans A. Krimm,Dipankar Maitra,Simone Migliari,Ron Remillard,Craig L. Sarazin,T. Shahbaz,T. Shahbaz,V. Tudose +34 more
TL;DR: In this article, the broadband spectrum of the compact jet of the black hole transient MAXI J1836−194 over state transitions during its discovery outburst in 2011 was studied, and it was shown that the break gradually shifted to higher frequencies as the source hardened at X-ray energies, from ∼10 11 to ∼4 × 10 13 Hz.
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Disc–jet coupling in low-luminosity accreting neutron stars
Vlad Tudor,James Miller-Jones,Alessandro Patruno,Alessandro Patruno,Caroline D'Angelo,Peter G. Jonker,Peter G. Jonker,D. M. Russell,Thomas D. Russell,Thomas D. Russell,Federico Bernardini,Fraser Lewis,Fraser Lewis,Adam Deller,Jason W. T. Hessels,Jason W. T. Hessels,Simone Migliari,Richard M. Plotkin,Roberto Soria,Rudy Wijnands +19 more
TL;DR: In this article, the radio and X-ray properties of three accreting millisecond pulsars (IGRJ17511-3057, SAX J1808.4-3658 and IGR J00291+5934) were investigated during their outbursts in 2015, and of the non-pulsing neutron star Cen X-4 inquiescence (2015) and in 1979.