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Flux transfer events simultaneously observed by Polar and Cluster: Flux rope in the subsolar region and flux tube addition to the polar cusp
Russell, C. T.; RèMe, H.; Lucek, E. A. +9 more
In this paper we present observational evidence of a flux transfer event observed simultaneously at low-latitude by Polar and at high-latitude by Cluster. This event occurs on 21 March 2002, when both Cluster and Polar are located near local noon but with a large latitudinal separation. During the event, Cluster is moving outbound from the polar c…
The Hubble Legacy Archive NICMOS grism data
Kümmel, M.; Haase, J.; Kuntschner, H. +6 more
The Hubble Legacy Archive (HLA) aims to create calibrated science data from the Hubble Space Telescope archive and make them accessible via user-friendly and Virtual Observatory (VO) compatible interfaces. It is a collaboration between the Space Telescope Science Institute (STScI), the Canadian Astronomy Data Centre (CADC) and the Space Telescope …
The Planck cluster survey
Arnaud, M.; Bartlett, J. G.; Chamballu, A. +2 more
The Planck Satellite will survey the entire sky in 9 millimeter/submillimeter bands and detect thousands of galaxy clusters via their thermal Sunyaev-Zel'dovich (SZ) effect. The unprecedented volume of the survey will permit the construction of a unique catalog of massive clusters out to redshifts of order unity. We describe the expected contents …
Bulk Compton motion in the luminous quasar 4C04.42?
de Rosa, A.; Ubertini, P.; Malizia, A. +2 more
We present the broadband analysis of the powerful quasar 4C04.42 (z = 0.965) observed by XMM-Newton and INTEGRAL. The 0.2-200keV spectrum is well reproduced with a hard power-law component (Γ ~ 1.2), augmented by a soft component below 2keV (observer frame), which is described by a thermal blackbody with temperature kT ⋍ 0.15keV. Alternatively, a …
Sequestration of Noble Gases by H+3 in Protoplanetary Disks and Outer Solar System Composition
Ceccarelli, C.; Mousis, O.; Pauzat, F. +1 more
We study the efficiency of the noble gas sequestration by the ion H+3 in the form of X H+3 complexes (with X = argon , krypton, or xenon) in gas-phase conditions similar to those encountered during the cooling of protoplanetary disks. We show that X H+3 complexes form very stable st…
XMM-Newton studies of a massive cluster of galaxies: RXC J2228.6+2036
Böhringer, H.; Pointecouteau, E.; Chen, Y. +2 more
We present the X-ray properties of a massive cluster of galaxies (RXC J2228.6+2036 at z = 0.421) using XMM-Newton data. The X-ray mass modeling is based on the temperature and density distributions of the intracluster medium derived using a deprojection method. We find that RXC J2228.6+2036 is a hot cluster (T500=8.92^+1.78-1.32
Evidence for Resonance Line Scattering in the Suzaku X-Ray Spectrum of the Cygnus Loop
Hughes, John P.; Miyata, Emi; Masai, Kuniaki
We present an analysis of the Suzaku observation of the northeastern rim of the Cygnus Loop supernova remnant. The high detection efficiency together with the high spectral resolution of the Suzaku X-ray CCD camera enables us to detect highly-ionized C and N emission lines from the Cygnus Loop. Given the significant plasma structure within the Suz…
Source Matching in the SDSS and Rass: which Galaxies are Really X-Ray Sources?
Hoyle, Fiona; Parejko, John K.; Constantin, Anca +1 more
The current view of galaxy formation holds that all massive galaxies harbor a massive black hole at their center, but that these black holes are not always in an actively accreting phase. X-ray emission is often used to identify accreting sources, but for galaxies that are not harboring quasars (low-luminosity active galaxies), the X-ray flux may …
The Nearby and Extremely Metal-poor Galaxy CGCG 269-049
Windhorst, Rogier A.; Kim, Hwihyun; Jansen, Rolf A. +2 more
We present Hubble Space Telescope (HST) and Spitzer Space Telescope images and photometry of the extremely metal-poor (Zcong 0.03 Z⊙) blue dwarf galaxy CGCG 269-049. The HST images reveal a large population of red giant and asymptotic giant branch stars, ruling out the possibility that the galaxy has recently formed. From the magnitude …
On the relation between DC current locations and an EUV bright point: A case study
Madjarska, M. S.; Büchner, J.; Santos, J. C. +1 more
Context: Motion of the photospheric plasma forces the footpoints of magnetic flux tubes to move. This can give rise to electric currents in the solar atmosphere. The dissipation of these electric currents and the consequent heating of the solar plasma may be responsible for the formation of Extreme-UltraViolet (EUV) and X-ray bright points. Earlie…