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INTEGRAL and Swift Observations of the Be X-Ray Binary 4U 1036-56 (RX J1037.5-5647) and its Possible Relation with γ-Ray Transients
Torres, Diego F.; Li, Jian; Chen, Yupeng +3 more
We present timing, spectral, and long-term temporal analysis of the high-mass X-ray binary 4U 1036-56 using INTEGRAL and Swift observations. We show that it is a weak hard X-ray source spending a major fraction of the time in quiescence and only occasionally characterized by X-ray outbursts. The outburst activity we report here lasts several days,…
Large-scale deformational systems in the South Polar Layered Deposits (Promethei Lingula, Mars): "Soft-sediment" and Deep-Seated Gravitational Slope Deformations Mechanisms
Marinangeli, Lucia; Guallini, Luca; Brozzetti, Francesco
The present study is the first attempt at a detailed structural and kinematic analysis of large-scale deformational systems observed in the South Polar Layered Deposits (SPLDs) in the Promethei Lingula (PL) margins (Mars). By systematically collecting attitude data referable to previously unknown deformational structures and defining the cross-cut…
Constraining stellar assembly and active galactic nucleus feedback at the peak epoch of star formation
Ryan, R. E.; O'Connell, R. W.; Hathi, N. P. +9 more
We study stellar assembly and feedback from active galactic nuclei (AGN) around the epoch of peak star formation (1 ≲z≲ 2), by comparing hydrodynamic simulations to rest-frame UV-optical galaxy colours from the Wide Field Camera 3 (WFC3) Early Release Science (ERS) programme. Our adaptive mesh refinement simulations include metal-dependent radiati…
Observational Limits on the Gas Mass of a z = 4.9 Galaxy
Smail, Ian; Swinbank, A. M.; Bower, R. G. +6 more
We present the results of a search for molecular gas emission from a star-forming galaxy at z = 4.9. The galaxy benefits from magnification of 22 ± 5 × due to strong gravitational lensing by the foreground cluster MS1358+62. We target the CO(5-4) emission at a known position and redshift from existing Hubble Space Telescope/Advanced Camera for Sur…
Golden gravitational lensing systems from the Sloan Lens ACS Survey - II. SDSS J1430+4105: a precise inner total mass profile from lensing alone
Seitz, Stella; Eichner, Thomas; Bauer, Anne
We study the Sloan Lens ACS (SLACS) survey strong-lensing system SDSS J1430+4105 at zl = 0.285. The lensed source (zs = 0.575) of this system has a complex morphology with several subcomponents. Its subcomponents span a radial range from 4 to 10 kpc in the plane of the lens. Therefore, we can constrain the slope of the total …
Hydraulic modeling of a distributary channel of Athabasca Valles, Mars, using a high-resolution digital terrain model
Muller, Jan-Peter; Warner, Nicholas H.; Gupta, Sanjeev +2 more
Estimating magnitudes of flow rates in outflow channels has a central role in developing understanding of the paleohydrology of Mars. The typical approach to flow estimation is to identify geomorphic features, which indicate bankfull levels, and then use a hydraulic model to convert these levels into flow rates. Data constraints have meant that im…
In situ mass spectrometry during the Lutetia flyby
Wurz, P.; Altwegg, K.; Balsiger, H. +12 more
During the Rosetta flyby at asteroid Lutetia the ROSINA instrument tried to detect a thin exosphere of the asteroid. Although the instrument is sensitive enough to detect even very tenuous gases at a density level of 1 cm-3 the Lutetia exosphere could not be unambiguously detected due to spacecraft outgassing, which was not constant bec…
Dynamic modeling of cusp ion structures
Raeder, J.; Trattner, K. J.; Connor, H. J.
Dispersed ion structures observed near the magnetosphere cusps have long been used to infer locations and properties of reconnection at the Earth's magnetopause. However, observations are often difficult to interpret since spacecraft move relative to a cusp ion structure, creating temporal and spatial ambiguity in the observations. Models of cusp …
Detection of New Point Sources in WMAP 7 Year Data Using Internal Templates and Needlets
Scodeller, Sandro; Hansen, Frode K.; Marinucci, Domenico
We have developed a new needlet-based method to detect point sources in cosmic microwave background (CMB) maps and have applied it to the Wilkinson Microwave Anisotropy Probe (WMAP) 7 year data. We use both the individual frequency channels as well as internal templates, the latter being the difference between pairs of frequency channels and hence…
Spectral and spatial observations of microwave spikes and zebra structure in the short radio burst of May 29, 2003
Yan, Y.; Meshalkina, N. S.; Tan, C. +2 more
Context. The unusual radio burst of May 29, 2003 connected with the M1.5 flare in AR 10368 has been analyzed. It was observed by the Solar Broadband Radio Spectrometer (SBRS/Huairou station, Beijing) in the 5.2-7.6 GHz range. It proved to be only the third case of a neat zebra structure appearing among all observations at such high frequencies. De…