T. M. C. Abbott, F. B. Abdalla, J. Annis, K. Bechtol, B. A. Benson, R. A. Bernstein, G. M. Bernstein, E. Bertin, D. Brooks, D. L. Burke, A. Carnero Rosell, M. Carrasco Kind, J. Carretero, F. J. Castander, C. L. Chang, T. M. Crawford, C. E. Cunha, C. B. D'Andrea, L. N. da Costa, C. Davis, S. Desai, H. T. Diehl, J. P. Dietrich, P. Doel, A. Drlica-Wagner, A. E. Evrard, E. Fernandez, B. Flaugher, J. Frieman, J. Garcia-Bellido, E. Gaztanaga, D. W. Gerdes, T. Giannantonio, D. Gruen, R. A. Gruendl, J. Gschwend, G. Gutierrez, W. G. Hartley, J. W. Henning, K. Honscheid, B. Hoyle, B. Jain, D. J. James, M. Jarvis, T. Jeltema, M. D. Johnson, M. W. G. Johnson, E. Krause, K. Kuehn, S. Kuhlmann, N. Kuropatkin, O. Lahav, A. R. Liddle, M. Lima, H. Lin, M. A. G. Maia, A. Manzotti, M. March, et al. (32 additional authors not shown)

We combine Dark Energy Survey Year 1 clustering and weak lensing data with Baryon Acoustic Oscillations (BAO) and Big Bang Nucleosynthesis (BBN) experiments to constrain the Hubble constant. Assuming a flat $\Lambda$CDM model with minimal neutrino mass ($\sum m_\nu = 0.06$ eV) we find $H_0=67.2^{+1.2}_{-1.0}$ km/s/Mpc (68% CL). This result is completely independent of Hubble constant measurements based on the distance ladder, Cosmic Microwave Background (CMB) anisotropies (both temperature and polarization), and strong lensing constraints. There are now five data sets that: a) have no shared observational systematics; and b) each constrain the Hubble constant with a few percent level precision. We compare these five independent measurements, and find that, as a set, the differences between them are significant at the $2.1\sigma$ level ($\chi^2/dof=20.1/11$, probability to exceed=4%). This difference is low enough that we consider the data sets statistically consistent with each other. The best fit Hubble constant obtained by combining all five data sets is $H_0 = 69.1^{+0.4}_{-0.6}$ km/s/Mpc.

I. Horvath, B.G. Toth, J. Hakkila, L.V. Toth, I.I. Racz, L.G. Balazs, S. Pinter, Z. Bagoly

GRB170817A associated with the LIGO-Virgo GW170817 neutron-star merger event lacks the short duration and hard spectrum expected of a Short gamma-ray burst (GRB) from long-standing classification models. Classifying this burst correctly requires comparison with other GRBs detected by Fermi GBM. The Fermi GBM catalog provides a large database with many measured variables that can be used to explore gamma-ray burst classification. Our aim is to classify Fermi GRBs and test whether or not GRB170817A belongs - as suggested - to the Short GRB class. We use statistical techniques to look for clustering in a sample of 1298 gamma-ray bursts described by duration and spectral hardness. Classification of the detected bursts shows that GRB170817A belongs to the Intermediate, rather than the Short GRB class. GRB170817A does not appear to fit into a simple phenomenological classification scheme. Recently, it was suggested that GRB170817A/GW170817 may be a member of a new Short GRB sub-class. Here we show that this proposed sub-class is the Intermediate one, as discovered earlier.