Author Archives: Matthew Allen

Read our ApJ paper, “Optical Precursors to Black Hole X-Ray Binary Outbursts: An Evolving Synchrotron Jet Spectrum in Swift J1357.2-0933” here and our ATels here and here. 2019 outburst, 2017 – 2019 light curve, long-term light curve, fit to the decay of the …

GRS 1124-68 long-term light curve (de-reddened magnitudes) Long-term light curve of GRS 1124-68 (not dereddened; archive data from the literature): Click here to return to the main XRB page

Click here to return to the main XRB page

See our ATels #8854, #8517 and #3116 with optical results from the Faulkes Telescopes and our paper here. Optical/X-ray luminosity diagram suggestive of a neutron star LMXB:   Finding charts:   Variability study on 2011-01-21 (where we measure a fractional …

Data from Faulkes Telescope North contributed to this ApJL paper by Bernadini et al. Our Astronomers Telegrams on V404 Cyg are here and here. 2009 – 2015 lightcurve 2014 – 2015 lightcurve V-band is calibrated using Udalski & Kaluzny 1991 (UK91) …

Light curve for GS2000+25 (2006 – 2007) Click here to return to the main XRB page

Our MNRAS published paper, ‘A long-term optical – X-ray correlation in 4U 1957+11’ is available here. Some X-ray and optical data from this paper are reproduced below. Click here to return to the main XRB page

Faulkes Telescope North and South contributed data to the Astronomy and Astrophysics paper, “The evolving jet spectrum of the neutron star X-ray binary Aql X-1 in transitional states during its 2016 outburst” See also long-term lightcurves at Dipankar Maitra and Charles …

Light curve of XTE J1859+226 (2006 – 2011) Click here to return to the main XRB page