Search Publications
Superorbital Periodic Modulation in Wind-accretion High-mass X-Ray Binaries from Swift Burst Alert Telescope Observations
Corbet, Robin H. D.; Krimm, Hans A.
We report the discovery using data from the Swift-Burst Alert Telescope (BAT) of superorbital modulation in the wind-accretion supergiant high-mass X-ray binaries 4U 1909+07 (= X 1908+075), IGR J16418-4532, and IGR J16479-4514. Together with already known superorbital periodicities in 2S 0114+650 and IGR J16493-4348, the systems exhibit a monotoni…
Global Star Formation Rates and Dust Emission over the Galaxy Interaction Sequence
Smith, Howard A.; Hernquist, Lars; Zezas, Andreas +7 more
We measured and modeled spectral energy distributions (SEDs) in 28 bands from the ultraviolet to the far-infrared (FIR) for 31 interacting galaxies in 14 systems. The sample is drawn from the Spitzer Interacting Galaxy Survey, which probes a range of galaxy interaction parameters at multiple wavelengths with an emphasis on the infrared bands. The …
Emission-line Galaxies from the Hubble Space Telescope Probing Evolution and Reionization Spectroscopically (PEARS) Grism Survey. II. The Complete Sample
Grogin, Norman A.; Hathi, Nimish P.; Holwerda, Benne W. +14 more
We present a full analysis of the Probing Evolution And Reionization Spectroscopically (PEARS) slitess grism spectroscopic data obtained with the Advanced Camera for Surveys on board Hubble Space Telescope. PEARS covers fields within both the Great Observatories Origins Deep Survey (GOODS) North and South fields, making it ideal as a random survey…
Chromospheric Evaporation in an M1.8 Flare Observed by the Extreme-ultraviolet Imaging Spectrometer on Hinode
Young, P. R.; Doschek, G. A.; Warren, H. P.
We discuss observations of chromospheric evaporation for a complex flare that occurred on 2012 March 9 near 03:30 UT obtained from the Extreme-ultraviolet Imaging Spectrometer (EIS) on board the Hinode spacecraft. This was a multiple event with a strong energy input that reached the M1.8 class when observed by EIS. EIS was in raster mode and fortu…
The Source Regions of Solar Energetic Particles Detected by Widely Separated Spacecraft
Moon, Y. -J.; Innes, D. E.; Bucik, R. +1 more
We studied the source regions of 12 solar energetic particle (SEP) events seen between 2010 August and 2012 January at STEREO-A, B, and/or Earth (Advanced Composition Explorer/Solar and Heliospheric Observatory/GOES), when the two STEREO spacecraft were separated by about 180°. All events were associated with flares (C1 to X6) and fast coronal mas…
The Rich Globular Cluster System of Abell 1689 and the Radial Dependence of the Globular Cluster Formation Efficiency
Ferrarese, L.; Jee, M. J.; Côté, P. +7 more
We study the rich globular cluster (GC) system in the center of the massive cluster of galaxies Abell 1689 (z = 0.18), one of the most powerful gravitational lenses known. With 28 Hubble Space Telescope/Advanced Camera for Surveys orbits in the F814W bandpass, we reach a magnitude I 814 = 29 with gsim90% completeness and sample the brig…
Fast Differential Emission Measure Inversion of Solar Coronal Data
Plowman, Joseph; Kankelborg, Charles; Martens, Petrus
We present a fast method for reconstructing differential emission measures (DEMs) using solar coronal data. The method consists of a fast, simple regularized inversion in conjunction with an iteration scheme for removal of residual negative emission measure. On average, it computes over 1000 DEMs s-1 for a sample active region observed …
An HST/WFC3-UVIS View of the Starburst in the Cool Core of the Phoenix Cluster
Veilleux, Sylvain; Bautz, Marshall W.; Reichardt, Christian L. +2 more
We present Hubble Space Telescope Wide Field Camera 3 observations of the core of the Phoenix cluster (SPT-CLJ2344-4243) in five broadband filters spanning rest-frame 1000-5500 Å. These observations reveal complex, filamentary blue emission, extending for >40 kpc from the brightest cluster galaxy. We observe an underlying, diffuse population of…
Detection of a High Brightness Temperature Radio Core in the Active-galactic-nucleus-driven Molecular Outflow Candidate NGC 1266
Morganti, Raffaella; Davis, Timothy A.; Nyland, Kristina +6 more
We present new high spatial resolution Karl G. Jansky Very Large Array (VLA) H I absorption and Very Long Baseline Array (VLBA) continuum observations of the active-galactic-nucleus-(AGN-)driven molecular outflow candidate NGC 1266. Although other well-known systems with molecular outflows may be driven by star formation (SF) in a central molecula…
Numerical Simulations of Coronal Mass Ejection on 2011 March 7: One-temperature and Two-temperature Model Comparison
Liu, Y.; Gombosi, T. I.; Toth, G. +6 more
During Carrington rotation (CR) 2107, a fast coronal mass ejection (CME; >2000 km s-1) occurred in active region NOAA 11164. This event is also associated with a solar energetic particle event. In this study, we present simulations of this CME with one-temperature (1T) and two-temperature (2T: coupled thermodynamics of the electron a…