Finding the First Cosmic Explosions Daniel Whalen McWilliams Fellow Carnegie Mellon University.

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Presentation transcript:

Finding the First Cosmic Explosions Daniel Whalen McWilliams Fellow Carnegie Mellon University

My Collaborators Chris Fryer (LANL) Lucy Frey (LANL) Wes Even (LANL) Daniel Holz (University of Chicago) Massimo Stiavelli (STSci) Alexander Heger (University of Minnesota) Candace Joggerst (LANL)

~ 200 pc M sol halos at z ~ 20 Birthplaces of Primordial Stars

Pop III Protostar Disk Fragmentation

Properties of the First Stars (?) thought to be very massive ( solar masses) due to inefficient H 2 cooling form in isolation (one per halo or in binaries) or in small multiples T surface ~ 100,000 K extremely luminous sources of ionizing and LW photons (> photons s -1 ) Myr lifetimes no known mechanisms for mass loss -- no line-driven winds

The First H II Regions in the Universe Whalen, Abel & Norman 2004 ApJ, 610, 14 Whalen & Norman 2006 ApJS, 162, 281 Whalen & Norman 2008a, ApJ, 672, 287 Whalen & Norman 2008b, ApJ, 673, 664

Final Fates of the First Stars Heger & Woosley 2002, ApJ 567, 532

Mixing in Pop III Supernovae Joggerst,.., Whalen, et al 2010 ApJ 709, 11 Joggerst & Whalen 2011 ApJ, 728, 129

LANL Pop III Supernova Light Curve Effort Whalen et al. ApJ 2012a,b,c,d in prep begin with 1D Pop III 15 – 40 M sol CC SN and 150 – 250 M sol KEPLER PI SN blast profiles evolve PI SNe out to 3 yr in the LANL radiation hydro code RAGE (Radiation Adaptive Grid Eulerian) evolve CC SNe out to breakout in the CASTRO AMR code, port to RAGE, and then run out to 8 months post-process RAGE profiles with the LANL SPECTRUM code to compute light curves and spectra

Shock Breakout

Light Curves u-series (red hypergiants) z-series (blue compact giants)

Spectral Evolution: z250

JWST NIRCam Light Curves

z25B z25Dz25G Some Pop III Core-Collapse SN Light Curves

Conclusions preliminary indications are that Pop III PI SNe will be visible to JWST and TMT out to z ~ 30 without strong lensing Pop III CC SNe may be visible out to z ~ detections of primordial SNe will be the first direct probe of the Pop III IMF Pop III CC SNe will reveal many protogalaxies that would otherwise not be detected by next generation observatories