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27 papers · 1 filter
A class of equations with peakon and pulson solutions (with an Appendix by Harry Braden and John Byatt-Smith)
Darryl D. Holm, Andrew N. W. Hone
We consider a family of integro-differential equations depending upon a parameter as well as a symmetric integral kernel . When and is the peakon kernel (i.e. $…
Spectral energy distributions and luminosities of galaxies and AGN in the SPITZER SWIRE Legacy Survey
M. Rowan-Robinson, T. Babbedge, J. Surace +28
We discuss optical associations, spectral energy distributions and photometric redshifts for SWIRE sources in the ELAIS-N1 area and the Lockman Validation Field. The band-merged IR…
Silicate-break galaxies: an efficient selection method of distant ultraluminous infrared galaxies
T. Takagi, C. P. Pearson
We present a photometric selection method for ULIRGs in the redshift range of z=1 -- 2. We utilize the most prominent spectral feature of ULIRGs, i.e. the silicate absorption featu…
Skyrmions, instantons, mass and curvature
Michael Atiyah, Paul Sutcliffe
We show that Skyrmions with massless pions in hyperbolic space provide a good approximation to Skyrmions with massive pions in Euclidean space, for a particular relationship betwee…
Skyrmions and the pion mass
Richard Battye, Paul Sutcliffe
We present numerical evidence that suggests the introduction of a non-zero pion mass might dramatically affect the structure of minimal energy Skyrmions. It appears that the shell-…
The European Large Area ISO Survey VIII: 90-micron final analysis and source counts
Ph. Heraudeau, S. Oliver, C. del Burgo +17
We present a re--analysis of the European Large Area ISO Survey (ELAIS) 90mum observations carried out with ISOPHOT, an instrument on board the ESA's Infrared Space Observatory (IS…