24 Dec 2013

  • (abs, pdf) McKinney et al., Three-Dimensional General Relativistic Radiation Magnetohydrodynamical Simulation of Super-Eddington Accretion, using a new code HARMRAD with M1 Closure
  • (abs, pdf) Vanzella et al., LBT/MODS1 spectroscopic confirmation of two faint sources at z=6.4 magnified by the CLASH / Frontier Fields cluster MACSJ0717.5+3745: towards the characterization of star-forming galaxies at the epoch of reionization
  • (abs, pdf) Whalen et al., Detecting Ancient Supernovae at z ~ 5 – 12 with CLASH
  • (abs, pdf) Inoue et al., Upper Bound on the First Star Formation History

20 Dec 2013

  • (abs, pdf) Tescari et al., Simulated star formation rate functions at $\bf{z\sim4-7}$, and the role of feedback in high-$\bf{z}$ galaxies
  • (abs, pdf) Offner et al., The Origin and Universality of the Stellar Initial Mass Function
  • (abs, pdf) Whalen et al., Pair-Instability Supernovae in the Local Universe
  • (abs, pdf) Padoan et al., The Star Formation Rate of Molecular Clouds
  • (abs, pdf) Bowler et al., The bright end of the galaxy luminosity function at z ~ 7: before the onset of mass quenching?

13 Dec 2013

  • (abs, pdf) Maschberger et al., The relation between accretion rates and the initial mass function in hydrodynamical simulations of star formation
  • (abs, pdf) Zhang et al., Radiation Transfer of Models of Massive Star Formation. III. The Evolutionary Sequence
  • (abs, pdf) Rémy-Ruyer et al., Gas-to-Dust mass ratios in local galaxies over a 2 dex metallicity range
  • (abs, pdf) Fernandez et al., Stars and Reionization: The Cross-Correlation of the 21cm Line and the Near Infrared Background

New paper: On the contribution of active galactic nuclei to reionization

Reionization is an extended process where the whole universe transitions from neutral to ionized between 300 and 1,000 million years after the Big Bang. While it has been established that galaxies are the main drivers of reionization and that active galactic nuclei (AGN) are unimportant during this process, very few have made an effort to quantify the exact contribution to the reionization history. In our paper, we find that AGN only increases the optical depth to Thomson scattering by ~2% under the most optimal conditions, thus strengthening the need for other sources beyond observed AGN and galaxies to match the observed optical depth by WMAP and Planck. This paper was primarily written by Rachel Grissom, who is a 2nd year graduate student at the CRA, and it is her first paper. Congratulations!