Search Publications
The XXL Survey. XXIV. The final detection pipeline
Chiappetti, L.; Pierre, M.; Faccioli, L. +7 more
Aims: A well characterised detection pipeline is an important ingredient for X-ray cluster surveys.
Methods: We present the final development of the XXL Survey pipeline. The pipeline optimally uses X-ray information by combining many overlapping observations of a source when possible, both for its detection and its characterisation. It c…
A molecular gas-rich GRB host galaxy at the peak of cosmic star formation
Daddi, E.; Elbaz, D.; Le Floc'h, E. +10 more
We report the detection of the CO(3-2) emission line from the host galaxy of gamma-ray burst (GRB) 080207 at z = 2.086. This is the first detection of molecular gas in emission from a GRB host galaxy beyond redshift 1. We find this galaxy to be rich in molecular gas with a mass of 1.1 × 10^{11} M_{{\odot }} assuming αCO = 4.36 M_{{\odot…
Jupiter’s Mesoscale Waves Observed at 5 µm by Ground-based Observations and Juno JIRAM
Fletcher, Leigh N.; Kraaikamp, E.; Hueso, R. +12 more
We characterize the origin and evolution of a mesoscale wave pattern in Jupiter’s North Equatorial Belt (NEB), detected for the first time at 5 µm using a 2016-17 campaign of “lucky imaging” from the VISIR instrument on the Very Large Telescope and the NIRI instrument on the Gemini observatory, coupled with M-band imaging from Juno’s JIRAM i…
Observational Evidence of Magnetic Reconnection Associated with Magnetic Flux Cancellation
Yang, Bo; Yang, Jiayan; Bi, Yi +4 more
Using high spatial and temporal data from the Solar Dynamics Observatory (SDO) and the Interface Region Imaging Spectrograph (IRIS), several observational signatures of magnetic reconnection in the course of magnetic flux cancellation are presented, including two loop-loop interaction processes, multiple plasma blob ejections, and a sheet-like str…
Chandrasekhar and Sub-Chandrasekhar Models for the X-Ray Emission of Type Ia Supernova Remnants. I. Bulk Properties
Yamaguchi, Hiroya; Auchettl, Katie; Badenes, Carles +9 more
Type Ia supernovae originate from the explosion of carbon-oxygen white dwarfs in binary systems, but the exact nature of their progenitors remains elusive. The bulk properties of Type Ia supernova remnants, such as the radius and the centroid energy of the Fe Kα blend in the X-ray spectrum, are determined by the properties of the supernova ejecta …
CMB constraints on running non-Gaussianity
Bartolo, N.; Liguori, M.; Renzi, A. +2 more
We develop a complete set of tools for CMB forecasting, simulation and estimation of primordial running bispectra, arising from a variety of curvaton and single-field (DBI) models of Inflation. We validate our pipeline using mock CMB running non-Gaussianity realizations and test it on real data by obtaining experimental constraints on the fNL…
The 2016 Outburst of PSR J1119-6127: Cooling and a Spin-down-dominated Glitch
Scholz, P.; Kaspi, V. M.; Tendulkar, S. P. +1 more
We report on the aftermath of a magnetar outburst from the young, high magnetic field radio pulsar PSR J1119-6127 that occurred on 2016 July 27. We present the results of a monitoring campaign using the Neil Gehrels Swift X-ray Telescope, NuSTAR, and XMM-Newton. After reaching a peak absorbed 0.5-10 keV flux of {45}-7+5× {10}…
Hot prominence detected in the core of a coronal mass ejection. III. Plasma filling factor from UVCS Lyman-α and Lyman-β observations
Heinzel, P.; Jejčič, S.; Bemporad, A. +1 more
Context. We study an erupting prominence embedded in the core of a coronal mass ejection that occurred on August 2, 2000, and focus on deriving the plasma filling factor of the prominence.
Aims: We explore two methods for measuring this factor along the line of sight. They are based on a combination of visible-light and ultraviolet spectrosco…
No Evidence of Chemical Abundance Variations in the Intermediate-age Cluster NGC 1783
de Grijs, Richard; Li, Chengyuan; Wu, Xiaohan +1 more
We have analyzed multi-passband photometric observations, obtained with the Hubble Space Telescope, of the massive (1.8 × 105 M ⊙), intermediate-age (1.8 Gyr-old) Large Magellanic Cloud star cluster NGC 1783. The morphology of the cluster’s red giant branch does not exhibit a clear broadening beyond its intrinsic width; the o…
Shapes of Magnetically Controlled Electron Density Structures in the Dayside Martian Ionosphere
Wild, J. A.; Kopf, A. J.; Diéval, C.
Nonhorizontal localized electron density structures associated with regions of near-radial crustal magnetic fields are routinely detected via radar oblique echoes on the dayside of Mars with the ionospheric sounding mode of the Mars Advanced Radar for Subsurface and Ionospheric Sounding (MARSIS) radar onboard Mars Express. Previous studies mostly …