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SOUSA: the Swift Optical/Ultraviolet Supernova Archive
Kuin, Paul; Brown, Peter J.; Holland, Stephen +2 more
The Ultra-Violet Optical Telescope on the Swift spacecraft has observed hundreds of supernovae, covering all major types and most subtypes. Here we introduce the Swift Optical/Ultraviolet Supernova Archive (SOUSA), which will contain all of the supernova images and photometry. We describe the observation and reduction procedures and how they impac…
Probing the mass and anisotropy of the Milky Way gaseous halo: sight-lines toward Mrk 421 and PKS 2155-304
Krongold, Y.; Mathur, S.; Gupta, A. +1 more
We recently found that the halo of the Milky Way contains a large reservoir of warm-hot gas that accounts for large fraction of the missing baryons from the Galaxy. The average physical properties of this circumgalactic medium (CGM) are determined by combining average absorption and emission measurements along several extragalactic sightlines. How…
Serendipitous UV source catalogues for 10 years of XMM and 5 years of Swift
Yershov, V. N.
Two UV serendipitous source catalogues are presented which were compiled based on the observations with two similar UV telescopes, one being on-board the ESA's XMM Newton observatory and another—on-board the NASA's Swift satellite. Both telescopes have similar optical and registration systems providing photometry in three ultraviolet and three vis…
The distant galaxy cluster XLSSJ022403.9-041328 on the LX–TX–M scaling relations using Chandra and XMM–Newton observations
Babyk, I.; Vavilova, I.
We present a very detailed analysis of Chandra and XMM–Newton observations of XLSSJ022403.9-041328 galaxy cluster of z=1, which was detected during the XMM-Newton Large Scale Structure survey. To define the "luminosity-temperature-mass", LX–TX–M, scaling relations we built temperature, surface brightness, density, and mass pr…
Non-minimal braneworld inflation after the Planck
Nozari, Kourosh; Rashidi, Narges
The recently released Planck data have constrained 4-dimensional inflationary parameters even more accurately than ever. We consider an extension of the braneworld model with induced gravity and a non-minimally coupled scalar field on the brane. We constraint the inflation parameters in this setup, by adopting six types of potential, in confrontat…
The distance to the Galactic center determined by OB stars
Branham, Richard L.
The OB stars are concentrated near the Galactic plane and should permit a determination of the distance to the Galactic center. van Leeuwen's new reduction of the Hipparcos catalog provides, after 824 Gould belt stars have been excluded, 6288 OB stars out to 1 kpc and Westin's compilation an additional 112 stars between 1 kpc and 3 kpc. The reduct…
Power spectrum analysis of limb and disk spicule using Hinode Ca H-line broadband filter
Tavabi, E.
We present observations of a solar quiet region obtained using the Hinode Solar Optical telescope (SOT) in the Ca II H-line with broadband filter taken on November 2006. We study off-limb and on-disk spicules to find a counterpart of the limb spicule on the disk. This investigation shows a strong correspondence between the limb and near limb spicu…
Searching for a gas cloud surrounding the WASP-18 planetary system
Fossati, L.; Kochukhov, O.; Bohlender, D. +5 more
Near-UV (NUV) Hubble Space Telescope (HST) observations of the extreme hot-Jupiter WASP-12b revealed the presence of diffuse exospheric gas extending beyond the planet's Roche lobe. Furthermore the NUV observations showed a complete lack of the normally bright core emission of the Mg II h&k resonance lines, in agreement with the measured anomalous…
The ultraviolet radiation environment in the habitable zones around low-mass exoplanet host stars
Loyd, R. O. Parke; France, Kevin; Linsky, Jeffrey L.
The EUV (200–911 Å), FUV (912–1750 Å), and NUV (1750–3200 Å) spectral energy distribution of exoplanet host stars has a profound influence on the atmospheres of Earth-like planets in the habitable zone. The stellar EUV radiation drives atmospheric heating, while the FUV (in particular, Lyα) and NUV radiation fields regulate the atmospheric chemist…
Observation of kink waves and their reconnection-like origin in solar spicules
Ebadi, H.; Ghiassi, M.
We analyze the time series of Ca II H-line obtained from Hinode/SOT on the solar limb. We follow three cases of upwardly propagating kink waves along a spicule and inverted Y-shaped structures at the cusp of it. The time-distance analysis shows that the axis of spicule undergos quasi-periodic transverse displacement at different heights from the p…