Hintze Centre for Astrophysical Surveys

Research group

Research theme

Sub department

About

A doubled double hotspot in J0816+5003 and the logarithmic slope of the lensing potential

ArXiv 1008.3273 (2010)

Authors:

Katherine Blundell, Paul Schechter, Nick Morgan, Matt Jarvis, Steve Rawlings, John Tonry

Abstract:

We present an analysis of observations of the doubly-lensed double hotspot in the giant radio galaxy J0816+5003 from MERLIN, MDM, WIYN, WHT, UKIRT and the VLA. The images of the two hotspot components span a factor of two in radius on one side of the lensing galaxy at impact parameters of less than 500pc. Hence we measure the slope of the lensing potential over a large range in radius, made possible by significant improvement in the accuracy of registration of the radio and optical frame and higher resolution imaging data than previously available. We also infer the lens and source redshifts to be 0.332 and > 1 respectively. Purely on the basis of lens modelling, and independently of stellar velocity dispersion measurements, we find the potential to be very close to isothermal.
Details from ArXiV
More details from the publisher

Ultra-bright optical transients are linked with type Ic supernovae

(2010)

Authors:

A Pastorello, SJ Smartt, MT Botticella, K Maguire, M Fraser, K Smith, R Kotak, L Magill, S Valenti, DR Young, S Gezari, F Bresolin, R Kudritzki, DA Howell, A Rest, N Metcalfe, S Mattila, E Kankare, KY Huang, Y Urata, WS Burgett, KC Chambers, T Dombeck, T Flewelling, T Grav, JN Heasley, KW Hodapp, N Kaiser, GA Luppino, RH Lupton, EA Magnier, DG Monet, JS Morgan, PM Onaka, PA Price, PH Rhoads, WA Siegmund, CW Stubbs, WE Sweeney, JL Tonry, RJ Wainscoat, MF Waterson, C Waters, CG Wynn-Williams
More details from the publisher

Parsec-Scale Bipolar X-ray Shocks Produced by Powerful Jets from the Neutron Star Circinus X-1

(2010)

Authors:

PH Sell, S Heinz, DE Calvelo, V Tudose, P Soleri, RP Fender, PG Jonker, NS Schulz, WN Brandt, MA Nowak, R Wijnands, M van der Klis, P Casella
More details from the publisher

GALEX and Pan-STARRS1 Discovery of SN IIP 2010aq: The First Few Days After Shock Breakout in a Red Supergiant Star

(2010)

Authors:

S Gezari, A Rest, ME Huber, G Narayan, K Forster, JD Neill, DC Martin, S Valenti, SJ Smartt, R Chornock, E Berger, AM Soderberg, S Mattila, E Kankare, WS Burgett, KC Chambers, T Dombeck, T Grav, JN Heasley, KW Hodapp, R Jedicke, N Kaiser, R Kudritzki, G Luppino, RH Lupton, EA Magnier, DG Monet, JS Morgan, PM Onaka, PA Price, PH Rhoads, WA Siegmund, CW Stubbs, JL Tonry, RJ Wainscoat, MF Waterson, CG Wynn-Williams
More details from the publisher

Molecular gas and star formation in early-type galaxies

(2010)

Authors:

Alison F Crocker, Martin Bureau, Lisa M Young, Francoise Combes
More details from the publisher