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Searching for the missing baryons in the Warm-Hot Intergalactic Medium
Barcons, X.
At low redshift (z<2), almost half of the baryons in the Universe are not found in bound structures like galaxies and clusters and therefore most likely reside in a Warm-Hot Intergalactic Medium (WHIM), as predicted by simulations. Attempts to detect WHIM filaments at cosmological distances in absorption towards bright background sources have y…
Suzaku observations of clusters of galaxies
Matsushita, K.; Suzaku SWG Team
We review results of Suzaku observations of the intracluster medium of clusters of galaxies whose O, Mg, Si, S and Fe abundances have been measured with good accuracy due to the good energy resolution and low background. Metal mass-to-light ratios were derived and we will discuss the origin of the metals. We also review the results of the search f…
Statistical properties of galaxy clusters
Böhringer, H.
Galaxy clusters are important probes to test cosmological models and interesting large-scale laboratories for astrophysical phenomena. For both applications a precise knowledge of global cluster properties, especially their mass is important. X-ray observations provide still the best key for the evaluation of cluster properties and the description…
Supernova remnants, planetary nebulae and superbubbles: Prospects for new XMM-Newton observations
Decourchelle, A.
Important results achieved over the last years on supernova remnants, planetary nebulae and superbubbles are briefly reviewed in the context of X-ray observations. I intend to review the important open scientific questions in these fields, and the specific contributions that can be made by XMM-Newton.
X-Ray Spectroscopy of SN1006 with Suzaku
Yamaguchi, H.; Koyama, K.; Bamba, A.
We report the Suzaku results on the structures of the thermal plasmas and non-thermal emissions from SN 1006, a type Ia supernova remnant. Clear evidence for a type Ia SNR is found in the metal abundances of the ejecta. Stringent constraint on the maximum electron energy and the synchrotron loss time are given from the non-thermal spectrum.
a New View of the Sun from the Hinode Space Mission
Harra, Louise K.
The Japanese/US/UK space mission, Hinode, was launched successfully in September 2006. Now, more than a year after the commissioning of the spacecraft and instruments, Hinode is unveiling a new view of the Sun. Hinode's goal is to help us to understand solar activity, and to link activity on (and below) the surface to the outer corona. This review…
The X-ray-infrared/submillimetre connection and the legacy era of cosmology
Alexander, D. M.
We review some recent results on the identification and characterisation of Active Galactic Nuclei (AGN) obtained by cross correlating X-ray surveys with infrared and submillimetre surveys. We also look toward the scientific gains that could be achieved from an XMM-Newton survey of the medium-deep legacy fields that are being observed at ≈ 1-850 &…
Modulation of Proton Fluxes at ~5 AU during the Largest SEP Events of 2005
Heber, Bernd; Klassen, Andreas; Struminsky, Alexei +1 more
The Ulysses spacecraft was close to the ecliptic at ~5 AU during the periods of enhanced solar activity in January and September 2005. The KET/Ulysses instrument registers a flux of cosmic ray protons within 5-2000 MeV, fluxes have been disturbed more than three solar rotations during the considered period. We find two periods of 27 days, when dis…
Very Large Array, SOHO, and RHESSI Observations of Magnetic Interactions and Particle Propagation across Large-Scale Coronal Loops
Groff, Tyler D.; Willson, Robert F.
Very Large Array (VLA) observations at wavelengths of 20 and 91 cm have been combined with data from the SOHO and RHESSI solar missions to study the evolution of transequatorial loops connecting active regions on the solar surface. The radio observations provide information about the acceleration and propagation of energetic electrons in these lar…
Spectral Analysis of LMC-X2 with XMM/Newton
Robba, N. R.; Iaria, R.; di Salvo, T. +2 more
We present the results of the analisys of an archival observation of LMC X-2 performed with XMM/Newton. The spectra of this source has never been analyzed with a high precision instrument before. The spectrum of the source can be fitted with a blackbody with a temperature 1.5 keV plus a disk blackbody at 0.8 keV. We argue that the emission of this…