We present the discovery of a dusty quasar, SMM J04135+10277, located behind the galaxy cluster Abell 478. The quasar was discovered as the brightest source in a submillimetre survey of high redshift galaxies lensed by foreground rich clusters of galaxies in a project aimed at studying the cosmic star formation history of dusty galaxies. With submillimetre fluxes of S 850 = 25 ± 2.8 mJy and S 4...

We present an analysis of ∼3.5 square degrees of submillimetre continuum and extinction data of the Perseus molecular cloud. We identify 49 clumps in the submillimetre map and we identify 39 structures (‘cores’) and 11 associations of structures (‘super cores’) in the extinction map. The cumulative mass distributions of the submillimetre clumps and extinction cores have steep slopes (α ∼ 2 and ...

Aalto University, P.O. Box 11000, FI-00076 Aalto www.aalto.fi Author Aki Karttunen Name of the doctoral dissertation Millimetre and submillimetre wave antenna design using ray tracing Publisher School of Electrical Engineering Unit Department of Radio Science and Engineering Series Aalto University publication series DOCTORAL DISSERTATIONS 127/2013 Field of research Radio Engineering Manuscript...

The surface density of populations of galaxies with steep/shallow source counts is increased/decreased by gravitational lensing magnification. These effects are usually called ‘magnification bias’ and ‘depletion’ respectively. However, if sources are demagnified by lensing, then the situation is reversed, and the detectable surface density of galaxies with a shallow source count, as expected at...

The redshifted spectral line radiation emitted from both atomic fine-structure and molecular rotational transitions in the interstellar medium (ISM) of high-redshift galaxies can be detected in the centimetre, millimetre and submillimetre wavebands. Here we predict the counts of galaxies detectable in an array of molecular and atomic lines. This calculation requires a reasonable knowledge of bo...

We present deep submillimetre photometry for 14 galaxies at z = 0.5 that are hosts of Type Ia supernovae, with the aim of examining the evolution of dust mass and extinction in normal galaxies. We combine these results with our previous observations of 17 z ∼ 0.5 SN1a hosts to look for any evolution in the dust content of normal galaxies between z = 0 and 0.5. The average observed-frame 850-μm ...