Philipp Podsiadlowski: Publications

Massive binary evolution

NEW ASTRONOMY REVIEWS 54:3-6 (2010) 39-44

Supersoft X-ray sources and the progenitors of Type Ia supernovae

ASTRONOMISCHE NACHRICHTEN 331:2 (2010) 218-222

The formation of hot subdwarf stars and its implications for the UV-upturn phenomenon of elliptical galaxies

ASTROPHYSICS AND SPACE SCIENCE 329:1-2 (2010) 41-48

Authors:

Z Han, P Podsiadlowski, A Lynas-Gray

Understanding Mass Transfer in Wind-Interacting Binaries: SPH Models of "Wind Roche-lobe Overflow"

INTERNATIONAL CONFERENCE ON BINARIES: IN CELEBRATION OF RON WEBBINK'S 65TH BIRTHDAY 1314 (2010) 51-52

Authors:

S Mohamed, Ph Podsiadlowski

A gamma-ray burst at a redshift of z approximately 8.2.

Nature 461:7268 (2009) 1254-1257

Authors:

NR Tanvir, DB Fox, AJ Levan, E Berger, K Wiersema, JPU Fynbo, A Cucchiara, T Krühler, N Gehrels, JS Bloom, J Greiner, PA Evans, E Rol, F Olivares, J Hjorth, P Jakobsson, J Farihi, R Willingale, RLC Starling, SB Cenko, D Perley, JR Maund, J Duke, RAMJ Wijers, AJ Adamson, A Allan, MN Bremer, DN Burrows, AJ Castro-Tirado, B Cavanagh, A de Ugarte Postigo, MA Dopita, TA Fatkhullin, AS Fruchter, RJ Foley, J Gorosabel, J Kennea, T Kerr, S Klose, HA Krimm, VN Komarova, SR Kulkarni, AS Moskvitin, CG Mundell, T Naylor, K Page, BE Penprase, M Perri, P Podsiadlowski, K Roth, RE Rutledge, T Sakamoto, P Schady, BP Schmidt, AM Soderberg, J Sollerman, AW Stephens, G Stratta, TN Ukwatta, D Watson, E Westra, T Wold, C Wolf

Abstract:

Long-duration gamma-ray bursts (GRBs) are thought to result from the explosions of certain massive stars, and some are bright enough that they should be observable out to redshifts of z > 20 using current technology. Hitherto, the highest redshift measured for any object was z = 6.96, for a Lyman-alpha emitting galaxy. Here we report that GRB 090423 lies at a redshift of z approximately 8.2, implying that massive stars were being produced and dying as GRBs approximately 630 Myr after the Big Bang. The burst also pinpoints the location of its host galaxy.

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