Publications (42)
Multiwavelength Observations of Swift J1753.5-0127
C. S. Froning, T. J. Maccarone, K. France +4
We present contemporaneous X-ray, ultraviolet, optical and near-infrared observations of the black hole binary system, Swift J1753.5-0127, acquired in 2012 October. The UV observat…
The complex evolution of the X-ray binary transient MAXI J1807+132 along the decay of its discovery outburst
F. Jiménez-Ibarra, T. Muñoz-Darias, M. Armas Padilla +6
MAXI J1807+132 is an X-ray transient discovered during the decay of an outburst in 2017. We present optical and X-ray monitoring of the source over more than 125 days, from outburs…
A misfired outburst in the neutron star X-ray binary Centaurus X-4
M. C. Baglio, P. Saikia, D. M. Russell +12
We report on a long-term optical monitoring of the neutron star X-ray binary Centaurus X-4 performed during the last 13.5 years. This source has been in quiescence since its outbur…
Testing the jet quenching paradigm with an ultradeep observation of a steadily soft state black hole
D. M. Russell, J. C. A. Miller-Jones, T. J. Maccarone +3
We present ultradeep radio observations with the Expanded Very Large Array of 4U 1957+11, a Galactic black hole candidate X-ray binary known to exist in a persistent soft X-ray sta…
Observational detection of eight mutual eclipses and occultations between the satellites of Uranus
A. A. Christou, F. Lewis, P. Roche +13
We carried out observations, with five different instruments ranging in aperture from 0.4m to 10m, of the satellites of Uranus during that planet's 2007 Equinox. Our observations c…
IGR J17329-2731: The birth of a symbiotic X-ray binary
E. Bozzo, A. Bahramian, C. Ferrigno +10
We report on the results of the multiwavelength campaign carried out after the discovery of the INTEGRAL transient IGR J17329-2731. The optical data collected with the SOAR telesco…
Bright mini-outburst ends the 12-year long activity of the black hole candidate Swift J1753.5-0127
Guobao Zhang, F. Bernardini, D. M. Russell +16
We present optical, UV and X-ray monitoring of the short orbital period black hole X-ray binary candidate Swift J1753.5-0127, focusing on the final stages of its 12year long out…
Up and Down the Black Hole Radio/X-ray Correlation: the 2017 mini-outbursts from Swift J1753.5-0127
R. M. Plotkin, J. Bright, J. C. A. Miller-Jones +20
The candidate black hole X-ray binary Swift J1753.5-0127 faded to quiescence in 2016 November, after a prolonged outburst that was discovered in 2005. Nearly three months later the…
A "high-hard" outburst of the black hole X-ray binary GS 1354-64
K. I. I. Koljonen, D. M. Russell, J. M. Corral-Santana +5
We study in detail the evolution of the 2015 outburst of GS 1354-64 (BW Cir) at optical, UV and X-ray wavelengths using Faulkes Telescope South/LCOGT, SMARTS and Swift. The outburs…
Probing jet launching in neutron star X-ray binaries: the variable and polarized jet of SAX J1808.4-3658
M. C. Baglio, D. M. Russell, S. Crespi +16
We report on an optical photometric and polarimetric campaign on the accreting millisecond X-ray pulsar (AMXP) SAX J1808.4-3658 during its 2019 outburst. The emergence of a low-fre…
Long term optical variations in Swift J1858.6-0814: evidence for ablation and comparisons to radio properties
L. Rhodes, D. M. Russell, P. Saikia +5
We present optical monitoring of the neutron star low-mass X-ray binary Swift J1858.6-0814 during its 2018-2020 outburst and subsequent quiescence. We find that there was strong op…
A dwarf nova in the globular cluster M13
Mathieu Servillat, N. A. Webb, F. Lewis +4
Dwarf novae in globular clusters seem to be rare with only 13 detections in the 157 known Galactic globular clusters. We report the identification of a new dwarf nova in M13, the 1…
Disk-jet coupling in low-luminosity accreting neutron stars
V. Tudor, J. C. A. Miller-Jones, A. Patruno +12
In outburst, neutron star X-ray binaries produce less powerful jets than black holes at a given X-ray luminosity. This has made them more difficult to study as they fade towards qu…
Optical and ultraviolet pulsed emission from an accreting millisecond pulsar
F. Ambrosino, A. Miraval Zanon, A. Papitto +28
Millisecond spinning, low magnetic field neutron stars are believed to attain their fast rotation in a 0.1-1 Gyr-long phase during which they accrete matter endowed with angular mo…
Infrared Synchrotron Emission in the Soft State of GX 339-4 and the Mid-Infrared/X-ray Luminosity Plane of Black Hole X-ray Binaries
P. Gandhi, D. M. Russell, M. C. Baglio +33
Progress in understanding the growth of accreting black holes remains hampered by a lack of sensitive coordinated multiwavelength observations. In particular, the mid-infrared (MIR…
The evolving jet spectrum of the neutron star X-ray binary Aql X-1 in transitional states during its 2016 outburst
M. Diaz Trigo, D. Altamirano, T. Dincer +7
We report on quasi-simultaneous observations from radio to X-ray frequencies of the neutron star X-ray binary Aql X-1 over accretion state transitions during its 2016 outburst. All…
New Cepheid variables in the young open clusters Berkeley 51 and Berkeley 55
M. E. Lohr, I. Negueruela, H. M. Tabernero +3
As part of a wider investigation of evolved massive stars in Galactic open clusters, we have spectroscopically identified three candidate classical Cepheids in the little-studied c…
LCLS-II-HE verification cryomodule high gradient performance and quench behavior
S. Posen, A. Cravatta, M. Checchin +43
An 8-cavity, 1.3 GHz, LCLS-II-HE cryomodule was assembled and tested at Fermilab to verify performance before the start of production. Its cavities were processed with a novel nitr…
Gaia18aen: First symbiotic star discovered by Gaia
J. Merc, J. MikoÅajewska, M. Gromadzki +20
Besides the astrometric mission of the Gaia satellite, its repeated and high-precision measurements serve also as an all-sky photometric transient survey. The sudden brightenings o…
A long-term optical - X-ray correlation in 4U 1957+11
D. M. Russell, F. Lewis, P. Roche +3
[abridged] Three years of optical monitoring of the low-mass X-ray binary (LMXB) 4U 1957+11 is presented. The source was observed in V, R and i-bands using the Faulkes Telescopes N…
Limits on the quiescent radio emission from the black hole binaries GRO J1655-40 and XTE J1550-564
D. E. Calvelo, R. P. Fender, D. M. Russell +6
We present the results of radio observations of the black hole binaries GRO J1655-40 and XTE J1550-564 in quiescence, with the upgraded Australia Telescope Compact Array. Neither s…
Enhanced optical activity 12 days before X-ray activity, and a 4 day X-ray delay during outburst rise, in a low-mass X-ray binary
A. J. Goodwin, D. M. Russell, D. K. Galloway +12
X-ray transients, such as accreting neutron stars, periodically undergo outbursts, thought to be caused by a thermal-viscous instability in the accretion disk. Usually outbursts of…
Optical spectroscopy and photometry of SAX J1808.4-3658 in outburst
P. Elebert, M. T. Reynolds, P. J. Callanan +8
We present phase resolved optical spectroscopy and photometry of V4580 Sagittarii, the optical counterpart to the accretion powered millisecond pulsar SAX J1808.4-3658, obtained du…
Final Design of the Production SSR1 Cryomodule for PIP-II Project at Fermilab
J. Bernardini, V. Roger, D. Passarelli +9
This contribution reports the design of the production Single Spoke Resonator Type 1 Cryomodule (SSR1 CM) for the PIP-II project at Fermilab. The innovative design is based on a st…
Flashing fast: characterising the 2025 outburst of MAXI J1957+032
A. Sanna, G. Illiano, M. C. Baglio +13
MAXI J1957+032 is an accreting millisecond X-ray pulsar that shows brief, recurrent outbursts in an ultra-compact ~1 h orbit. We characterise the 2025 outburst using X-ray timing a…
Single-lens mass measurement in the high-magnification microlensing event Gaia19bld located in the Galactic disc
K. A. Rybicki, Å. Wyrzykowski, E. Bachelet +66
We present the photometric analysis of Gaia19bld, a high-magnification () microlensing event located in the southern Galactic plane, which exhibited finite source and m…
HERschel Observations of Edge-on Spirals (HEROES). II: Tilted-ring modelling of the atomic gas disks
F. Allaert, G. Gentile, M. Baes +9
Context. Edge-on galaxies can offer important insights in galaxy evolution as they are the only systems where the distribution of the different components can be studied both radia…
A 420 day X-ray/optical modulation and extended X-ray dips in the short-period transient Swift J1753.5-0127
A. W. Shaw, P. A. Charles, A. J. Bird +6
We have discovered a \sim420d modulation, with associated X-ray dips, in RXTE-ASM/MAXI/Swift-BAT archival light-curves of the short-period (3.2h) black-hole X-ray transient, Swift…
Observational detection of eclipses of J5 Amalthea by the Galilean satellites
A. A. Christou, F. Lewis, P. Roche +2
We carried out observations of the small jovian satellite Amalthea (J5) as it was being eclipsed by the Galilean satellites near the 2009 equinox of Jupiter in order to apply the t…
Aql X-1 from dawn 'til dusk: the early rise, fast state transition and decay of its 2024 outburst
A. Marino, F. Coti Zelati, K. Alabarta +36
Transient Low-Mass X-ray Binaries (LMXBs) are usually first detected by all-sky X-ray monitors when they enter new outbursts, typically at X-ray luminosities above 10…
Full orbital solution for the binary system in the northern Galactic disc microlensing event Gaia16aye
Åukasz Wyrzykowski, P. Mróz, K. A. Rybicki +182
Gaia16aye was a binary microlensing event discovered in the direction towards the northern Galactic disc and was one of the first microlensing events detected and alerted to by the…
Overview of an Extensive Multi-wavelength Study of GX 339-4 during the 2010 Outburst
M. Cadolle Bel, J. Rodriguez, P. D'Avanzo +8
The microquasar GX 339-4 experienced a new outburst in 2010: it was observed simultaneously at various wavelengths from radio up to soft gamma-rays. We focused on observations that…
Optical precursors to X-ray binary outbursts
David M. Russell, D. M. Bramich, F. Lewis +14
Disc instability models predict that for X-ray binaries in quiescence, there should be a brightening of the optical flux prior to an X-ray outburst. Tracking the X-ray variations o…
A late jet rebrightening revealed from multi-wavelength monitoring of the black hole candidate XTE J1752-223
D. M. Russell, P. A. Curran, T. Muñoz-Darias +15
We present optical monitoring of the black hole candidate XTE J1752-223 during its 2009 - 2010 outburst and decay to quiescence. The optical light curve can be described by an expo…
A long-period Cepheid variable in the starburst cluster VdBH222
J. S. Clark, I. Negueruela, M. E. Lohr +4
Galactic starburst clusters play a twin role in astrophysics, serving as laboratories for the study of stellar physics and also delineating the structure and recent star formation…
An evolving compact jet in the black hole X-ray binary MAXI J1836-194
D. M. Russell, T. D. Russell, J. C. A. Miller-Jones +27
We report striking changes in the broadband spectrum of the compact jet of the black hole transient MAXI J1836-194 over state transitions during its discovery outburst in 2011. A f…
The omnipresent flux-dependent optical dips of the black hole transient Swift J1357.2-0933
G. Panizo-Espinar, T. Muñoz-Darias, M. Armas Padilla +15
Swift J1357.2-0933 is a black hole transient of particular interest due to the optical, recurrent dips found during its first two outbursts (in 2011 and 2017), with no obvious X-ra…
The Double-Peaked 2008 Outburst of the Accreting Milli-Second X-ray Pulsar, IGR J00291+5934
F. Lewis, D. M. Russell, P. G. Jonker +18
In August 2008, the accreting milli-second X-ray pulsar (AMXP), IGR J00291+5934, underwent an outburst lasting ~ 100 days, the first since its discovery in 2004. We present data fr…
Gaia Photometric Science Alerts
S. T. Hodgkin, D. L. Harrison, E. Breedt +108
Since July 2014, the Gaia mission has been engaged in a high-spatial-resolution, time-resolved, precise, accurate astrometric, and photometric survey of the entire sky. Aims: We pr…
The nature of the close magnetic white dwarf + probable brown dwarf binary SDSS J121209.31+013627.7
M. R. Burleigh, T. R. Marsh, B. T. Gansicke +16
Optical time series photometry of the short period magnetic white dwarf + probable brown dwarf binary SDSS 121209.31+013627.7 reveals pulse-like variability in all bands from i' to…
Events leading up to the June 2015 outburst of V404 Cyg
F. Bernardini, D. M. Russell, A. W. Shaw +5
On 2015 June 15 the burst alert telescope (BAT) on board {\em Swift} detected an X-ray outburst from the black hole transient V404 Cyg. We monitored V404 Cyg for the last 10 years…
The optical counterpart of the bright X-ray transient Swift J1745-26
T. Muñoz-Darias, A. de Ugarte Postigo, D. M. Russell +13
We present a 30-day monitoring campaign of the optical counterpart of the bright X-ray transient Swift J1745-26, starting only 19 minutes after the discovery of the source. We obse…