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19912026
Showing 2008 · astro-phShow all

143 papers · 2 filters

astro-ph2008★ 23 cited

An XMM-Newton Spectral and Timing Study of IGR J16207-5129: An Obscured and Non-Pulsating HMXB

John A. Tomsick, Sylvain Chaty, Jerome Rodriguez +3

We report on a 12 hr XMM-Newton observation of the supergiant High-Mass X-ray Binary IGR J16207-5129. This is only the second soft X-ray (0.4-15 keV, in this case) study of the sou…

astro-ph2008★ 140 cited

Fermi LAT Observations of the Vela Pulsar

A. A. Abdo

The Vela pulsar is the brightest persistent source in the GeV sky and thus is the traditional first target for new gamma-ray observatories. We report here on initial Fermi Large Ar…

astro-ph2008★ 52 cited

A spatially resolved study of photoelectric heating and [CII] cooling in the LMC

D. Rubin, S. Hony, S. C. Madden +20

(abridged) We study photoelectric heating throughout the Large Magellanic Cloud. We quantify the importance of the [CII] cooling line and the photoelectric heating process of vario…

astro-ph2008★ 51 cited

Performance of the First ANTARES Detector Line

ANTARES collaboration, M. Ageron

In this paper we report on the data recorded with the first Antares detector line. The line was deployed on the 14th of February 2006 and was connected to the readout two weeks lat…

astro-ph2008★ 38 cited

XMM-Newton discovery of 2.6 s pulsations in the soft gamma-ray repeater SGR 1627-41

P. Esposito, A. Tiengo, S. Mereghetti +6

After nearly a decade of quiescence, the soft gamma-ray repeater SGR 1627-41 reactivated on 2008 May 28 with a bursting episode followed by a slowly decaying enhancement of its per…

astro-ph2008★ 53 cited

Physical and chemical conditions in methanol maser selected hot-cores and UCHII regions

C. R. Purcell, S. N. Longmore, M. G. Burton +4

We present the results of a targeted 3-mm spectral line survey towards the eighty-three 6.67 GHz methanol maser selected star forming clumps observed by Purcell et al. 2006. In add…

astro-ph2008★ 20 cited

Redshifts and lens profile for the double quasar QJ 0158-4325

C. Faure, T. Anguita, A. Eigenbrod +5

We report on the redshift of the lensing galaxy and of the quasar QJ 0158-4325 and on the lens model of the system. A deep VLT/FORS2 spectrum and HST/NICMOS-F160W images are deconv…

astro-ph2008★ 11 cited

A multi-wavelength survey of AGN in the XMM-LSS field: I. Quasar selection via the KX technique

Th. Nakos, J. P. Willis, S. Andreon +16

AIMS: We present a sample of candidate quasars selected using the KX-technique. The data cover 0.68 deg^2 of the X-ray Multi-Mirror (XMM) Large-Scale Structure (LSS) survey area wh…

astro-ph2008★ 46 cited

Cosmological Systematics Beyond Nuisance Parameters : Form Filling Functions

T. D. Kitching, A. Amara, F. B. Abdalla +2

In the absence of any compelling physical model, cosmological systematics are often misrepresented as statistical effects and the approach of marginalising over extra nuisance syst…

astro-ph2008★ 130 cited

Diagnoses to unravel secular hydrodynamical processes in rotating main sequence stars

T. Decressin, S. Mathis, A. Palacios +4

(Abridged) We present a detailed analysis of the main physical processes responsible for the transport of angular momentum and chemical species in the radiative regions of rotating…

astro-ph2008★ 27 cited

Swift follow-up observations of 17 INTEGRAL sources of uncertain or unknown nature

J. Rodriguez, J. A. Tomsick, S. Chaty

(abridged) We analysed data from observations of 17 INTEGRAL sources made with the Swift satellite. We refine the position of the hard X-ray sources to an accuracy of a few arcsec.…

astro-ph2008★ 92 cited

Stochastic excitation of nonradial modes II. Are solar asymptotic gravity modes detectable?

K. Belkacem, R. Samadi, M. J. Goupil +3

Detection of solar gravity modes remains a major challenge to our understanding of the innerparts of the Sun. Their frequencies would enable the derivation of constraints on the co…

astro-ph2008★ 193 cited

Photometric redshifts for the CFHTLS T0004 Deep and Wide fields

J. Coupon, O. Ilbert, M. Kilbinger +15

We compute photometric redshifts based on the template-fitting method in the fourth public release of the Canada-France-Hawaii Telescope Legacy Survey. This unique multi-colour cat…

astro-ph2008

Three-Dimensional Simulations of Solar and Stellar Dynamos: The Influence of a Tachocline

M. S. Miesch, M. K. Browning, A. S. Brun +2

We review recent advances in modeling global-scale convection and dynamo processes with the Anelastic Spherical Harmonic (ASH) code. In particular, we have recently achieved the fi…

astro-ph2008★ 46 cited

The Dust-to-Gas Ratio in the Small Magellanic Cloud Tail

K. D. Gordon, C. Bot, E. Muller +21

The Tail region of the Small Magellanic Cloud (SMC) was imaged using the MIPS instrument on the Spitzer Space Telescope as part of the SAGE-SMC Spitzer Legacy. Diffuse infrared emi…

astro-ph2008★ 1 cited

Broad-Band Spectrum of The Black Hole Candidate IGR J17497-2821 Studied with Suzaku

A. Paizis, K. Ebisawa, H. Takahashi +9

The broad-band 1-300 keV Suzaku spectrum of IGR J17497-2821, the X-ray transient discovered by INTEGRAL in September 2006, is presented. Suzaku observed IGR J17497-2821 on Septembe…

astro-ph2008★ 98 cited

On the evolution of the Gamma- and X-ray luminosities of Pulsar Wind Nebulae

Fabio Mattana, Maurizio Falanga, Diego Götz +7

Pulsar wind nebulae are a prominent class of very high energy (E > 0.1 TeV) Galactic sources. Their Gamma-ray spectra are interpreted as due to inverse Compton scattering of ultrar…

astro-ph2008★ 244 cited

Gamma-ray and radio tests of the e+e- excess from DM annihilations

Gianfranco Bertone, Marco Cirelli, Alessandro Strumia +1

PAMELA and ATIC recently reported an excess in e+e- cosmic rays. We show that if it is due to Dark Matter annihilations, the associated gamma-ray flux and the synchrotron emission…

astro-ph2008

Modelling the outburst profile of X-ray powered millisecond pulsars

Maurizio Falanga

The outbursts of low mass X-ray binaries are prolonged relative to those of dwarf nova cataclysmic variables as a consequence of X-ray irradiation of the disc. We show that the tim…

astro-ph2008★ 3 cited

Mid-infrared VISIR and Spitzer observations of the surroundings of the magnetar SGR 1806-20

F. Rahoui, S. Chaty, P. O. Lagage

We report mid-infrared observations of SGR 1806-20 and its environment - with the highest spatial resolution in this domain to date - using ESO/VISIR in 2005 and 2006, and we retri…

astro-ph2008

Simbol-X: A Formation Flight Mission with an Unprecedented Imaging Capability in the 0.5-80 Kev Energy Band

Gianpiero Tagliaferri, Philippe Ferrando, Jean-Michel Le Duigou +8

The discovery of X-ray emission from cosmic sources in the 1960s has opened a new powerful observing window on the Universe. In fact, the exploration of the X-ray sky during the 70…

astro-ph2008★ 22 cited

Spectral energy distribution modelling of Southern candidate massive protostars using the Bayesian inference method

T. Hill, C. Pinte, V. Minier +2

Concatenating data from the millimetre regime to the infrared, we have performed spectral energy distribution modelling for 227 of the 405 millimetre continuum sources of Hill et a…

astro-ph2008★ 32 cited

IGRJ16479-4514: the first eclipsing supergiant fast X-ray transient?

E. Bozzo, L. Stella, G. Israel +2

Supergiant fast X-ray transients are a new class of high mass X-ray binaries recently discovered with INTEGRAL. Hours long outbursts from these sources have been observed on numero…

astro-ph2008★ 5 cited

Neutrino detection of transient sources with optical follow-up observations

D. Dornic D, S. Basa, J. Brunner +9

The ANTARES telescope has the opportunity to detect transient neutrino sources, such as gamma-ray bursts (GRBs), core-collapse supernovae (SNe), flares of active galactic nuclei (A…