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Hard X-ray bursts recorded by the IBIS telescope of the INTEGRAL observatory in 2003-2009
Grebenev, S. A.; Chelovekov, I. V.
To find X-ray bursts from sources within the field of view of the IBIS/INTEGRAL telescope, we have analyzed all the archival data of the telescope available at the time of writing the paper (the observations from January 2003 to April 2009). We have detected 834 hard (15-25 keV) X-ray bursts, 239 of which were simultaneously recorded by the JEM-X/…
The Galactic plane at faint X-ray fluxes - I. Properties and characteristics of the X-ray source population
Pérez-Ramírez, D.; Warwick, R. S.; Byckling, K.
We investigate the serendipitous X-ray source population revealed in XMM-Newton observations targeted in the Galactic plane within the region 315° < l < 45° and |b| < 2?. Our study focuses on a sample of 2204 X-ray sources at intermediate to faint fluxes, which were detected in a total of 116 XMM-Newton fields and are listed in the Second…
Anomalous interaction of a plasma flow with the boundary layers of a geomagnetic trap
Zhang, H.; Kozak, L.; Amata, E. +14 more
Using the data from the Interball-1, GEOTAIL, THEMIS and CLUSTER satellites, we propose a mechanism of anomalous magnetosheath dynamics. This mechanism yields that plasma boundaries can be locally deformed over distances comparable to its thickness. In particular, the magnetospheric boundary, the magnetopause, is deformed over distances up to a fe…
Heavy Ion Energization, Transport, and Loss in the Earth's Magnetosphere
Nilsson, H.
A deep proper-motion survey of the nearby open cluster Blanco 1
Barnes, S. A.; James, D. J.; Pourbaix, D. +10 more
We provide two comprehensive catalogues of positions and proper motions in the area of open cluster Blanco 1. The main catalogue, CTLGM, contains 6271 objects down to V∼ 18.5 and covers a circular ∼11 deg2 area. The accuracy of CTLGM proper motions, at about 0.3-0.5 mas yr-1 for well-measured stars, permits an excellent segre…
INTEGRAL Observations of the γ-Ray Binary 1FGL J1018.6-5856
Rea, Nanda; Torres, Diego F.; Li, Jian +5 more
The Fermi Large Area telescope (Fermi-LAT) collaboration has recently reported that one of their detected sources, namely, 1FGL J1018.6-5856, is a new gamma-ray binary similar to LS 5039. This has prompted efforts to study its multi-frequency behavior. In this report, we present the results from 5.78 Ms International Gamma-Ray Astrophysics Laborat…
Vaduz, an unusual fresh crater on Mars: Evidence for impact into a recent ice-rich mantle
Head, James W.; Kadish, Seth J.; Schaefer, Ethan I.
A fresh, 1.85 km diameter impact crater in the midlatitudes of Mars (38°N) named Vaduz exhibits distinctive crater-related geological subunits (facies) extending up to ∼15 radii from the rim crest and perched >10 m above the adjacent plains. Knobby terrain fringing and underlying the facies is interpreted as degraded thermal contraction crack p…
Orbital and spin phase-resolved spectroscopy of the intermediate polar EX Hya using XMM-Newton data
Balman, S.; Pekön, Y.
We present the orbital phase-resolved spectra of an intermediate polar, EX Hya, together with the spin phase-resolved spectra during two different epochs using the X-ray Multi-Mirror Mission (XMM-Newton), European Photon Imaging Camera (pn instrument). We find that the source at the two epochs has the same X-ray luminosity of ∼6.5 × 1031
Variable Stars in Large Magellanic Cloud Globular Clusters. I. NGC 1466
Pritzl, Barton J.; Smith, Horace A.; De Lee, Nathan +3 more
This is the first in a series of papers studying the variable stars in Large Magellanic Cloud globular clusters. The primary goal of this series is to better understand how the RR Lyrae stars in Oosterhoff-intermediate systems compare to those in Oosterhoff I/II systems. In this paper, we present the results of our new time-series BV photometric s…
Spatially Resolved Star Formation History Along the Disk of M82 Using Multi-band Photometric Data
Mayya, Y. D.; Rosa-González, D.; Rodríguez-Merino, L. H.
We present results on the star formation history and extinction in the disk of M82 over spatial scales of 10'' (~180 pc). Multi-band photometric data covering the far-ultraviolet to the near-infrared bands were fitted to a grid of synthetic spectral energy distributions. We obtained distribution functions of age and extinction for each of the 117 …