Search Publications
Solar Orbiter Radio and Plasma Waves - Time Domain Sampler: In-flight performance and first results
Maksimovic, M.; Bale, S. D.; Chust, T. +20 more
Context. The Radio and Plasma Waves (RPW) instrument on board Solar Orbiter has been operating nearly continuously since the launch in February 2020. The Time Domain Sampler (TDS) receiver of the RPW instrument is dedicated to waveform measurements of plasma waves and dust impact signatures in an intermediate frequency range from 0.2 to 200 kHz. <…
Hubble Frontier Field Clusters and Their Parallel Fields: Photometric and Photometric Redshift Catalogs
Mobasher, Bahram; Davidzon, I.; Sánchez, F. J. +1 more
We present a multiband analysis of the six Hubble Frontier Field clusters and their parallel fields, producing catalogs with measurements of source photometry and photometric redshifts. We release these catalogs to the public along with maps of intracluster light and models for the brightest galaxies in each field. This rich data set covers a wave…
Low star formation efficiency due to turbulent adiabatic compression in the Taffy bridge
Braine, J.; Schneider, B.; Vollmer, B. +1 more
The Taffy system (UGC 12914/15) consists of two massive spiral galaxies that had a head-on collision about 20 Myr ago. It represents an ideal laboratory for studying the reaction of the interstellar medium (ISM) to a high-speed (∼1000 km s−1) gas-gas collision. New sensitive, high-resolution (2.7″ or ∼800 pc) CO(1−0) observations of the…
The Eris/Dysnomia system I: The orbit of Dysnomia
Buie, M. W.; Grundy, W. M.; Holler, B. J. +1 more
We present new results on the Eris/Dysnomia system including analysis of new images from the WFC3 instrument on the Hubble Space Telescope (HST). Seven HST orbits were awarded to program 15171 in January and February 2018, with the intervals between observations selected to sample Dysnomia over a full orbital period. Using relative astrometry of E…
Peeking Between the Pulses: The Far-UV Spectrum of the Previously Unseen White Dwarf in AR Scorpii
Garnavich, Peter; Littlefield, Colin; Lyutikov, Maxim +1 more
The compact object in the interacting binary AR Sco has widely been presumed to be a rapidly rotating, magnetized white dwarf (WD), but it has never been detected directly. Isolating its spectrum has proven difficult because the spin-down of the WD generates pulsed synchrotron radiation that far outshines the WD's photosphere. As a result, a previ…
An XMM-Newton study of active-inactive galaxy pairs
Guainazzi, Matteo; Paragi, Zsolt; Bianchi, Stefano +8 more
While theory and simulations indicate that galaxy mergers play an important role in the cosmological evolution of accreting black holes and their host galaxies, samples of active galactic nuclei (AGNs) in galaxies at close separations are still small. In order to increase the sample of AGN pairs, we undertook an archival project to investigate the…
A Luminous X-Ray Transient in SDSS J143359.16+400636.0: A Likely Tidal Disruption Event
Riddle, Reed; Stern, Daniel; Gezari, Suvi +9 more
We present the discovery of a luminous X-ray transient, serendipitously detected by Swift's X-ray Telescope on 2020 February 5, located in the nucleus of the galaxy SDSS J143359.16+400636.0 at z = 0.099 (luminosity distance DL = 456 Mpc). The transient was observed to reach a peak luminosity of ∼1044 erg s-1 in the…
Magnetic Field Reconstruction for a Realistic Multi-Point, Multi-Scale Spacecraft Observatory
Klein, K. G.; Verscharen, D.; Roberts, O. W. +3 more
Future in situ space plasma investigations will likely involve spatially distributed observatories comprised of multiple spacecraft, beyond the four and five spacecraft configurations currently in operation. Inferring the magnetic field structure across the observatory, and not simply at the observation points, is a necessary step towards characte…
Spectrophotometric properties of materials observed by Pancam on the Mars Exploration Rovers: 4. Final mission observations
Johnson, Jeffrey R.; Grundy, William M.; Lemmon, Mark T. +4 more
The last sets of Panoramic Camera (Pancam) visible/near-infrared (432-1009 nm) multispectral observations made under varying viewing and illumination geometries by the Mars Exploration Rovers Spirit and Opportunity were examined using radiative transfer models to study the surface scattering and microphysical nature of rock and soil units at both …
FORCAST Imaging of Two Small Nearby Clusters: The Coronet and B 59
Vacca, William D.; Reipurth, Bo; Sandell, Göran +1 more
We present mid-infrared imaging of two young clusters, the Coronet in the CrA cloud core and B 59 in the Pipe Nebula, using the FORCAST camera on the Stratospheric Observatory for Infrared Astronomy. We also analyze Herschel Space Observatory4 PACS and SPIRE images of the associated clouds. The two clusters are at similar, and very clos…