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We present the first large-scale 3D map of interstellar dust temperature. We build upon existing 3D reddening maps derived from starlight absorption (Bayestar19), covering 3/4 of the sky. Starting with the column density for each of 500…

星系天体物理 · 物理学 2022-11-16 Ioana A. Zelko , Douglas P. Finkbeiner , Albert Lee , Gregory Green

Simulations of high-density deuterium plasmas in a lower single-null magnetic configuration based on a TCV discharge are presented. We evolve the dynamics of three charged species (electrons, D$^{+}$ and D$_{2}^{+}$), interacting with two…

等离子体物理 · 物理学 2023-09-06 D. Mancini , P. Ricci , N. Vianello , G. Van Parys , D. S. Oliveira

Rydberg Matter (RM) theory is previously shown to give good agreement with the unidentified infrared bands (UIR, UIB) that are observed in emission from many objects in space. From stimulated emission studies in RM, a slightly simpler…

天体物理学 · 物理学 2007-10-18 Leif Holmlid

The attenuation and quenching of H$_2$/O$_2$ detonations transmitted across a column of cylinders were studied experimentally and analytically at sub-atmospheric pressures. Two distinct transmission regimes were observed: successful…

流体动力学 · 物理学 2024-01-18 Hongxia Yang , Wentian Wang , Farzane Zangane , Kevin Cheevers , Logan Maley , Matei Radulescu

In future nuclear fusion reactors high heat load events, such as edge-localised modes (ELMs), can potentially damage divertor materials and release impurities into the main plasma, limiting plasma performance. The most difficult to handle…

等离子体物理 · 物理学 2016-11-24 S. Elmore , S. Y. Allan , G. Fishpool , A. Kirk , A. J. Thornton , N. R. Walkden , J. R. Harrison

Tungsten is a leading candidate material for plasma-facing components in future fusion reactors. Extensive studies have been performed to better understand its behavior under irradiation. Recent experiments of Rutherford backscattering…

We analyze 1050 ks of INTEGRAL data of the high mass X-ray binary pulsar 1E 1145.1-6141 to study its properties over a long time baseline, from June 2003 to June 2004, with wide spectral coverage. We study three high luminosity episodes,…

天体物理学 · 物理学 2009-11-13 Carlo Ferrigno , Alberto Segreto , Teresa Mineo , Andrea Santangelo , Rüdiger Staubert

The X-ray pulsar GX 1+4 was observed with the RXTE satellite for a total of 51ks between 1996 July 19 - 21. During this period the flux decreased smoothly from an initial mean level of ~ 6 X 10^36 erg/s to a minimum of ~ 4 X 10^35 erg/s…

天体物理学 · 物理学 2016-08-30 D. K. Galloway , A. B. Giles , J. G. Greenhill , M. C. Storey

A new Gas Puff Imaging (GPI) diagnostic has been installed on the TCV tokamak, providing two-dimensional insights into Scrape-Off-Layer (SOL) turbulence dynamics above, at and below the magnetic X-point. A detailed study in L-mode,…

We analyzed AIA/SDO high-cadence images in all bands, HMI/SDO data, soft X-ray images from SXI/GOES-15, and Halpha images from the GONG network. We detected umbral brightenings that were visible in all AIA bands as well as in Halpha.…

太阳与恒星天体物理 · 物理学 2015-06-16 C. E. Alissandrakis , S. Patsourakos

Ultracold molecules can be associated from ultracold atoms by ramping the magnetic field through a Feshbach resonance. A reverse ramp dissociates the molecules. Under suitable conditions, more than one outgoing partial wave can be…

We observe the translational and rotational diffusion of dimer tracer particles in quasi-2D colloidal samples. The dimers are in dense samples of two different sizes of spherical colloidal particles, with the area fraction ${\phi}$ of the…

软凝聚态物质 · 物理学 2017-10-05 Skanda Vivek , Eric R. Weeks

Surface plasmons in 2-dimensional electron systems with narrow Bloch bands feature an interesting regime in which Landau damping (dissipation via electron-hole pair excitation) is completely quenched. This surprising behavior is made…

介观与纳米尺度物理 · 物理学 2019-10-14 Cyprian Lewandowski , Leonid Levitov

Periodic spatial modulations of the superfluid density, or pair density waves, have now been widely detected in unconventional superconductors, either as the primary or the secondary states accompanying charge density waves. Understanding…

We perform phase-resolved spectroscopy of the accreting millisecond pulsar, SAX J1808.4-3658, during the slow-decay phase of the 2002 outburst. Simple phenomenological fits to RXTE PCA data reveal a pulsation in the iron line at the spin…

高能天体物理现象 · 物理学 2015-05-19 Tony Wilkinson , Alessandro Patruno , Anna Watts , Philip Uttley

Observations of enhanced Doppler frequency shift effect of the highly localized microwave backscattering in the upper hybrid resonance are reported. The experiment is performed at FT-2 tokamak, where a steerable focusing antenna set,…

等离子体物理 · 物理学 2007-05-23 A. B. Altukhov , A. D. Gurchenko , E. Z. Gusakov , L. A. Esipov , S. I. Lashkul , A. Yu. Stepanov

A new Doppler backscattering (DBS) system, consisting of Q-band and V-band, has been installed and achieved its first data on the MAST-U spherical tokamak. The Q-band and V-band have separate microwave source systems, but share the same…

等离子体物理 · 物理学 2023-09-12 P. Shi , R. Scannell , J. Wen , Z. B. Shi , C. Michael , T. Rhodes , V. H. Hall-Chen , Z. C. Yang , M. Jiang , W. L. Zhong

The spatial and temporal evolutions of blue-core helicon discharge driven by a planar antenna with four concentric rings are explored on the Linear Experimental Advanced Device (LEAD). The discharge experiences distinct density jumps from E…

Conventional magneto-oscillations of conductivity in three dimensions are washed out as the temperature exceeds the spacing between the Landau levels. This is due to smearing of the Fermi distribution. In two dimensions, in the presence of…

介观与纳米尺度物理 · 物理学 2023-10-03 M. E. Raikh

Quantitative density measurements from electron scattering show that shear bands in deformed Al_{88}Y_{7}Fe_{5} metallic glass exhibit alternating high and low density regions, ranging from -9 % to +6 % relative to the un-deformed matrix.…

材料科学 · 物理学 2015-12-10 Vitalij Schmidt , Harald Rösner , Martin Peterlechner , Paul M. Voyles , Gerhard Wilde