Showing 2012Show all

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astro-ph.SR2012★ 85 cited

Linking two consecutive nonmerging magnetic clouds with their solar sources

S. Dasso, C. H. Mandrini, B. Schmieder +10

On 15 May 2005, a huge interplanetary coronal mass ejection (ICME) was observed near Earth. It triggered one of the most intense geomagnetic storms of solar cycle 23 (Dst peak = -2…

astro-ph.SR2012★ 45 cited

Large-scale environments of binary AGB stars probed by Herschel - I. Morphology statistics and case studies of R Aquarii and W Aquilae

A. Mayer, A. Jorissen, F. Kerschbaum +14

The Mass loss of Evolved StarS (MESS) sample offers a selection of 78 Asymptotic Giant Branch (AGB) stars and Red Supergiants (RSGs) observed with the PACS photometer on-board Hers…

astro-ph.SR2012★ 98 cited

The enigmatic nature of the circumstellar envelope and bow shock surrounding Betelgeuse as revealed by Herschel. I. Evidence of clumps, multiple arcs, and a linear bar-like structure

L. Decin, N. L. J. Cox, P. Royer +13

Context. The interaction between stellar winds and the interstellar medium (ISM) can create complex bow shocks. The photometers on board the Herschel Space Observatory are ideally…

astro-ph.SR2012★ 22 cited

Late Stages of Stellar Evolution - Herschel's contributions

Leen Decin

Cool objects glow in the infrared. The gas and solid-state species that escape the stellar gravitational attraction of evolved late-type stars in the form of a stellar wind are coo…

astro-ph.SR2012★ 2 cited

Internal rotation of red giants by asteroseismology

M. P. Di Mauro, D. Cardini, R. Ventura +12

We present an asteroseismic approach to study the dynamics of the stellar interior in red-giant stars by asteroseismic inversion of the splittings induced by the stellar rotation o…

astro-ph.SR2012★ 573 cited

The rotation rates of massive stars: the role of binary interaction through tides, mass transfer and mergers

S. E. de Mink, N. Langer, R. G. Izzard +2

Rotation is thought to be a major factor in the evolution of massive stars, especially at low metallicity, with consequences for their chemical yields, ionizing flux and final fate…

astro-ph.SR2012★ 88 cited

The outflow history of two Herbig-Haro jets in RCW 36: HH 1042 and HH 1043

L. E. Ellerbroek, L. Podio, L. Kaper +4

Jets around low- and intermediate-mass young stellar objects (YSOs) contain a fossil record of the recent accretion and outflow activity of their parent star-forming systems. We ai…

astro-ph.SR2012★ 19 cited

Remarkable spectral variability on the spin period of the accreting white dwarf in V455 And

S. Bloemen, D. Steeghs, K. De Smedt +4

We present spin-resolved spectroscopy of the accreting white dwarf binary V455 And. With a suggested spin period of only 67s, it has one of the fastest spinning white dwarfs known.…

astro-ph.SR2012★ 18 cited

High-precision CoRoT space photometry and fundamental parameter determination of the B2.5V star HD 48977

Anne Thoul, Pieter Degroote, Claude Catala +10

We present the CoRoT light curve of the bright B2.5V star HD 48977 observed during a short run of the mission in 2008, as well as a high-resolution spectrum gathered with the HERME…

astro-ph.HE2012★ 103 cited

Solution to the Sigma-Problem of Pulsar Wind Nebulae

Oliver Porth, Serguei S. Komissarov, Rony Keppens

We present first results of three dimensional relativistic magnetohydrodynamical simulations of Pulsar Wind Nebulae. They show that the kink instability and magnetic dissipation in…

math.NA2012★ 3 cited

A Gaussian quadrature rule for oscillatory integrals on a bounded interval

Andreas Asheim, Alfredo Deaño, Daan Huybrechs +1

We investigate a Gaussian quadrature rule and the corresponding orthogonal polynomials for the oscillatory weight function on the interval . We show that such a r…

astro-ph.HE2012★ 9 cited

Time-resolved X-Shooter spectra and RXTE light curves of the ultra-compact X-ray binary candidate 4U 0614+091

O. K. Madej, P. G. Jonker, P. J. Groot +3

In this paper we present X-Shooter time resolved spectroscopy and RXTE PCA light curves of the ultra-compact X-ray binary candidate 4U 0614+091. The X-Shooter data are compared to…

hep-th2012★ 4 cited

Holographic thermalization of mutual and tripartite information in 2d CFTs

Alice Bernamonti, Neil Copland, Ben Craps +1

We discuss the concepts of mutual and tripartite information by referring to simple intuitive examples, and describe their use as probes of thermalization in holographic models. We…

astro-ph.HE2012★ 38 cited

Three Dimensional Structure of Relativistic Jet Formation

Oliver Porth

Using high resolution adaptive mesh refinement simulations in 3D, we investigate the formation of relativistic jets from rotating magnetospheres. Here, we focus on the development…

cond-mat.mes-hall2012★ 183 cited

Getting through the nature of silicene: sp2-sp3 two-dimensional silicon nanosheet

E. Cinquanta, E. Scalise, D. Chiappe +5

By combining experimental techniques with ab-initio density functional theory calculations, we describe the Si/Ag(111) two-dimensional system in terms of a sp2-sp3 crystalline form…

hep-th2012★ 83 cited

A note on obstinate tachyons in classical dS solutions

Ulf H. Danielsson, Gary Shiu, Thomas Van Riet +1

The stabilisation of the dilaton and volume in tree-level flux compactifications leads to model independent and thus very powerful existence and stability criteria for dS solutions…

math.AG2012★ 3 cited

On Rational Points of Varieties over Local Fields having a Model with Tame Quotient Singularities

Annabelle Hartmann

We study rational points on a smooth variety X over a complete local field K with algebraically closed residue field, and models of X with tame quotient singularities. If a model o…

hep-th2012★ 44 cited

The Chern-Simons Diffusion Rate in Improved Holographic QCD

Umut Gursoy, Ioannis Iatrakis, Elias Kiritsis +2

In (3+1)-dimensional SU(Nc) Yang-Mills (YM) theory, the Chern-Simons diffusion rate, Gamma_{CS}, is determined by the zero-momentum, zero-frequency limit of the retarded two-point…

hep-th2012★ 23 cited

Freudenthal Dual Lagrangians

L. Borsten, M. J. Duff, S. Ferrara +1

The global U-dualities of extended supergravity have played a central role in differentiating the distinct classes of extremal black hole solutions. When the U-duality group satisf…

hep-ex2012★ 36 cited

Search for heavy resonances in the W/Z-tagged dijet mass spectrum in pp collisions at 7 TeV

CMS Collaboration

A search has been made for massive resonances decaying into a quark and a vector boson, qW or qZ, or a pair of vector bosons, WW, WZ, or ZZ, where each vector boson decays to hadro…

cond-mat.supr-con2012

Magnetic flux density and the critical field in the intermediate state of type-I superconductors

V. Kozhevnikov, R. J. Wijngaarden, J. de Wit +1

To address unsolved fundamental problems of the intermediate state (IS), the equilibrium magnetic flux structure and the critical field in a high purity type-I superconductor (indi…

stat.ML2012★ 77 cited

Developments in the theory of randomized shortest paths with a comparison of graph node distances

Ilkka Kivimäki, Masashi Shimbo, Marco Saerens

There have lately been several suggestions for parametrized distances on a graph that generalize the shortest path distance and the commute time or resistance distance. The need fo…

physics.atom-ph2012★ 88 cited

The in-gas-jet laser ion source: resonance ionization spectroscopy of radioactive atoms in supersonic gas jets

Yu. Kudryavtsev, R. Ferrer, M. Huyse +2

New approaches to perform efficient and selective step-wise Resonance Ionization Spectroscopy (RIS) of radioactive atoms in different types of supersonic gas jets are proposed. Thi…

astro-ph.SR2012

Summary of IAU GA SpS5 - III. Matter ejection and feedback

Yael Naze, Xiao Che, Nick L. J. Cox +8

The last part of SpS5 dealt with the circumstellar environment. Structures are indeed found around several types of massive stars, such as blue and red supergiants, as well as WRs…