Search Publications
The first observation of an intermediate flare from SGR 1935+2154
Hurley, K.; Zhang, X. -L.; Israel, G. L. +8 more
We report on the bright burst detected by four Interplanetary network (IPN) spacecraft on 2015 April 12. The IPN localization of the source is consistent with the position of the recently discovered soft gamma-repeater SGR 1935+2154. From the Konus-Wind (KW) observation, we derive temporal and spectral parameters of the emission, and the burst ene…
X-ray and radio emission from the luminous supernova 2005kd
Bauer, F. E.; Dwarkadas, V. V.; Romero-Cañizales, C. +1 more
SN 2005kd is among the most luminous supernovae (SNe) to be discovered at X-ray wavelengths. We have re-analysed all good angular resolution (better than 20 arcsec full width at half-maximum point spread function) archival X-ray data for SN 2005kd. The data reveal an X-ray light curve that decreases as t-1.62±0.06. Our modelling of the …
CFHTLenS and RCSLenS cross-correlation with Planck lensing detected in fourier and configuration space
Heymans, Catherine; Moutard, Thibaud; Harnois-Déraps, Joachim +13 more
We measure the cross-correlation signature between the Planck cosmic microwave background (CMB) lensing map and the weak lensing observations from both the Red-sequence Cluster Lensing Survey and the Canada-France-Hawaii Telescope Lensing Survey. In addition to a Fourier analysis, we include the first configuration-space detection, based on the es…
The accelerated build-up of the red sequence in high-redshift galaxy clusters
Demarco, R.; Lidman, C.; Huertas-Company, M. +6 more
We analyse the evolution of the red sequence in a sample of galaxy clusters at redshifts 0.8 < z < 1.5 taken from the HAWK-I Cluster Survey (HCS). The comparison with the low-redshift (0.04 < z < 0.08) sample of the WIde-field Nearby Galaxy-cluster Survey (WINGS) and other literature results shows that the slope and intrinsic scatter o…
A discrete chemo-dynamical model of the giant elliptical galaxy NGC 5846: dark matter fraction, internal rotation, and velocity anisotropy out to six effective radii
Forbes, Duncan A.; Romanowsky, Aaron J.; Brodie, Jean +7 more
We construct a suite of discrete chemo-dynamical models of the giant elliptical galaxy NGC 5846. These models are a powerful tool to constrain both the mass distribution and internal dynamics of multiple tracer populations. We use Jeans models to simultaneously fit stellar kinematics within the effective radius Re, planetary nebula (PN)…
A complete census of Herschel-detected infrared sources within the HST Frontier Fields
Smail, I.; Kneib, J. -P.; Lutz, D. +16 more
We present a complete census of all Herschel-detected sources within the six massive lensing clusters of the HST Frontier Fields (HFF). We provide a robust legacy catalogue of 263 sources with Herschel fluxes, primarily based on imaging from the Herschel Lensing Survey and PEP/HerMES Key Programmes. We optimally combine Herschel, Spitzer and WISE …
Strong constraints on a super-Eddington accretion flow: XMM-Newton observations of an intermediate-mass black hole
Done, Chris; Ward, Martin; Jin, Chichuan
RX J1140.1+0307 is a Narrow Line Seyfert 1 (NLS1) with one of the lowest black hole masses known in an AGN (M ≤ 106 M⊙). We show results from two new XMM-Newton observations, exhibiting soft 2-10 keV spectra, a strong excess at lower energies, and fast X-ray variability which is typical of this class of AGN. The soft excess c…
Magnetic field pile-up and draping at intermediately active comets: results from comet 67P/Churyumov-Gerasimenko at 2.0 AU
Glassmeier, K. -H.; Goetz, C.; Richter, I. +2 more
The interaction between a comet and the impinging solar wind leads to modifications of the magnetic field in the environment of a comet. Among those, one finds magnetic field pile-up and draping, which reveal properties of the interaction and are known from previous cometary spacecraft missions. This work studies the magnetic field configuration a…
Evidence for magnetic field compression in shocks within the jet of V404 Cyg
Covino, S.; Russell, D. M.; Fender, R. P. +3 more
We present optical and near-IR linear polarimetry of V404 Cyg during its 2015 outburst and in quiescence. We obtained time-resolved r'-band polarimetry when the source was in outburst, near-IR polarimetry when the source was near quiescence and multiple waveband optical polarimetry later in quiescence. The optical-to-near-IR linear pola…
Free-free and H42α emission from the dusty starburst within NGC 4945 as observed by ALMA
Dickinson, C.; Bendo, G. J.; Karim, A. +3 more
We present observations of the 85.69 GHz continuum emission and H42α line emission from the central 30 arcsec within NGC 4945. Both sources of emission originate from nearly identical structures that can be modelled as exponential discs with scalelengths of ∼2.1 arcsec (or ∼40 pc). An analysis of the spectral energy distribution based on combining…