120 citations · 435 across the 21 of their papers we have counts for
20 papers
Rapid Mid-Infrared Spectral-Timing with JWST. I. The prototypical black hole X-ray Binary GRS 1915+105 during a MIR-bright and X-ray-obscured state
P. Gandhi, E. S. Borowski, J. Byrom +44
We present mid-infrared (MIR) spectral-timing measurements of the prototypical Galactic microquasar GRS 1915+105. The source was observed with the Mid-Infrared Instrument (MIRI) on…
Evolution of Spin in the Intermediate Polar CC Sculptoris
John A. Paice, S. Scaringi, N. Castro Segura +6
We report on spin variations in the intermediate polar and cataclysmic variable CC Scl, as seen by the Transiting Exoplanet Survey Satellite (TESS). By studying both the spin perio…
The BlackGEM telescope array I: Overview
Paul J. Groot, S. Bloemen, P. Vreeswijk +75
The main science aim of the BlackGEM array is to detect optical counterparts to gravitational wave mergers. Additionally, the array will perform a set of synoptic surveys to detect…
Classifying optical (out)bursts in cataclysmic variables: the distinct observational characteristics of dwarf novae, micronovae, stellar flares and magnetic gating
Krystian Ilkiewicz, Simone Scaringi, Martina Veresvarska +5
Cataclysmic variables can experience short optical brightenings, which are commonly attributed to phenomena such as dwarf novae outbursts, micronovae, donor flares or magnetic gati…
Millihertz X-ray variability during the 2019 outburst of black hole candidate Swift~J1357.20933
Aru Beri, Vishal Gaur, Phil Charles +8
Swift J1357.20933 is a black-hole candidate X-ray transient, which underwent its third outburst in 2019, during which several multi-wavelength observations were carried out.~Her…
A rapid optical and X-ray timing study of the neutron star X-ray binary Swift J1858.6-0814
T. Shahbaz, J. A. Paice, K. M. Rajwade +8
We present a rapid timing analysis of optical (HiPERCAM and ULTRACAM) and X-ray (NICER) observations of the X-ray transient Swift J1858.6-0814 during 2018 and 2019. The optical lig…
Accretion physics at high X-ray spectral resolution: New frontiers and game-changing science
P. Gandhi, T. Kawamuro, M. Díaz Trigo +14
Microcalorimeters have demonstrated success in delivering high spectral resolution, and have paved the path to revolutionary new science possibilities in the coming decade of X-ray…
CorrSim: A Multiwavelength Timing Observation Simulator
John A. Paice, Poshak Gandhi, Ranjeev Misra
Studying the rapid variability of many astronomical objects is key to understanding the underlying processes at play. However, a combination of limited telescope availability, view…
On the Possibility of Discovering Exoplanets within our Solar System
John A Paice, Jack J|C Watkins
It has previously been suggested that the rate of exoplanet discovery, doubling roughly every 39 months, is indicative of a runaway increase in the number of exoplanets in our gala…
A Decade of Black-Hole X-ray Binary Transients
Philip A Charles, David A H Buckley, Enrico Kotze +7
The last decade has seen a significant gain in both space and ground-based monitoring capabilities, producing vastly better coverage of BH X-ray binaries during their (rare) transi…
Synchronous X-ray/Optical QPOs from the Black Hole LMXB MAXI J1820+070
Jessymol K. Thomas, David A. H. Buckley, Philip A. Charles +10
We present high-speed optical photometry from SAAO and SALT on the black hole LMXB \MAXI (ASSASN-18ey), some of it simultaneous with NICER, Swift and Insight-HXMT X-ray coverage. W…
Large optical modulations during 2018 outburst of MAXI J1820+070 reveal evolution of warped accretion disc through X-ray state change
Jessymol K. Thomas, Philip A. Charles, David A. H. Buckley +5
The black-hole X-ray transient MAXI J1820+07 (=ASSASN-18ey) discovered in March 2018 was one of the optically brightest ever seen, which has resulted in very detailed optical outbu…
The Evolution of Rapid Optical/X-ray Timing Correlations in the Initial Hard State of MAXI J1820+070
J. A. Paice, P. Gandhi, T. Shahbaz +11
We report on a multi-epoch campaign of rapid optical/X-ray timing observations of the superbright 2018 outburst of MAXI J1820+070, a black hole low-mass X-ray binary system. The ob…
Measuring fundamental jet properties with multi-wavelength fast timing of the black hole X-ray binary MAXI J1820+070
A. J. Tetarenko, P. Casella, J. C. A. Miller-Jones +9
We present multi-wavelength fast timing observations of the black hole X-ray binary MAXI J1820+070 (ASASSN-18ey), taken with the Karl G. Jansky Very Large Array (VLA), Atacama Larg…
A Black Hole X-ray Binary at 100 Hz: Multiwavelength Timing of MAXI J1820+070 with HiPERCAM and NICER
J. A. Paice, P. Gandhi, T. Shahbaz +12
We report on simultaneous sub-second optical and X-ray timing observations of the low mass X-ray binary black hole candidate MAXI J1820+070. The bright 2018 outburst rise allowed s…
Hot, dense He II outflows during the 2017 outburst of the X-ray transient Swift J1357.2-0933
Phil Charles, James H. Matthews, David A. H. Buckley +3
Time-resolved SALT spectra of the short-period, dipping X-ray transient, Swift J1357.2-0933, during its 2017 outburst has revealed broad Balmer and HeII4686 absorption features, bl…
Kinematic study of the association Cyg OB3 with Gaia DR2
Anjali Rao, Poshak Gandhi, Christian Knigge +3
We study the stellar kinematic properties and spatial distribution of the association Cyg OB3 using precise astrometric data from Gaia DR2. All known O- and B-type stars in Cyg OB3…
Puzzling Blue Dips in the Black Hole Candidate Swift J1357.2-0933, from ULTRACAM, SALT, ATCA, Swift and NuSTAR
J. A. Paice, P. Gandhi, P. A. Charles +13
We present rapid, multiwavelength photometry of the low-mass X-ray binary Swift J1357.2-0933 during its 2017 outburst. Using several sets of quasi-simultaneous ULTRACAM/NTT (optica…
The black hole X-ray transient Swift J1357.2-0933 as seen with Swift and NuSTAR during its 2017 outburst
Aru Beri, B. E. Tetarenko, A. Bahramian +8
We report on observations of black hole Swift J1357.2-0933, a member of the modest population of very faint X-ray transients. This source has previously shown intense dips in the o…
Gaia DR2 Distances and Peculiar Velocities for Galactic Black Hole Transients
Poshak Gandhi, Anjali Rao, Michael A. C. Johnson +2
We report on a first census of Galactic black hole X-ray binary (BHXRB) properties with the second data release (DR2) of {\em Gaia}, focusing on dynamically confirmed and strong ca…