We meet every Monday at 1.30pm to discuss the new developments in the fields of research relevant for GRAPPA members and affiliates. The idea is to discuss briefly, with the help of a projector, the results of ~5 interesting papers recently appeared on the arXiv, or anywhere else. Please choose one posted e.g. this week in your field and tell us about it in 5-10 minutes. Feel free to join us even if you haven't read anything.

Sunday, January 31, 2016

Monday, February 1

Title: The feeble giant. Discovery of a large and diffuse Milky Way dwarf galaxy in the constellation of Crater
Authors: G. Torrealba, S. E. Koposov, V. Belokurov, M. Irwin
Links: http://arxiv.org/abs/1601.07178
Presenter: M. Lovell

Title: Searching for decaying dark matter in deep XMM-Newton observation of the Draco dwarf spheroidal
Authors: O. Ruchayskiy, A. Boyarsky, D. Iakubovskyi, E. Bulbul, D. Eckert, J. Franse, D. Malyshev, Maxim Markevitch, A. Neronov
Links: http://arxiv.org/abs/1512.07217
Presenter: M. Lovell

Title: Lofar, VLA, and Chandra observations of the Toothbrush galaxy cluster
Authors: R. J. van Weeren, G. Brunetti, M. Bruggen, et al
Links: http://arxiv.org/abs/1601.06029
Presenter: E. Storm

Title: ETHOS - An Effective Theory of Structure Formation: Dark matter physics as a possible explanation of the small-scale CDM problems
Authors: M. Vogelsberger, et al
Links: http://arxiv.org/abs/1512.05349
Presenter: T. Edwards



Monday, January 25, 2016

Monday, January 25


Title: Detailed spectral and morphological analysis of the shell type SNR RCW 86
Authors: HESS collaboration (I Jung corr. author, J Vink, D Berge involved)
Links: http://www.aanda.org/articles/aa/pdf/forth/aa26545-15.pdf (and related work: https://drive.google.com/file/d/0BwglvIfP_v0ldkxZLTkzN05iSjg/view)
Presenter: J. Vink

Title: Improved limits on dark matter annihilation in the Sun with the 79-string IceCube detector and implications for supersymmetry
Authors: IceCube
Link: http://arxiv.org/abs/1601.00653 
Presenter: Hamish Silverwood

Title: Simulated Milky Way analogues: implications for dark matter direct searches
Authors: Bozorgnia et al.
Link: http://arxiv.org/abs/1601.04707 
Presenter: Nassim Bozorgnia

Title: The impact of baryons on the direct detection of dark matter
/ Assessing Astrophysical Uncertainties in Direct Detection with Galaxy Simulations
Authors: Kelso et al. / Sloane et al.
Link: http://arxiv/org/abs/1601.04725 & http://arxiv.org/abs/1601.05402 
Presenter: Christopher McCabe

Title: Young and Millisecond Pulsar GeV Gamma-ray Fluxes from the Galactic Center & Beyond
Authors: O’Leary, Kistler, Ker and Dexter
Links: http://arxiv.org/abs/1601.05797
Presenter: R. Bartels

Sunday, January 17, 2016

Monday, January 18


Title: The B/C and sub-Iron/Iron Cosmic ray ratios - further evidence in favor of the spiral arm diffusion model
Authors: David Benyamin, Ehud Nakar, Tsvi Piran, Nir j. Shaviv
Presenter: Daniele Gaggero

Title:The Mass-Concentration-Redshift Relation of Cold and Warm Dark Matter Halos
Authors: Aaron D. Ludlow et al.
Presenter: Richard Bartels

Title: Radio detection prospects for a bulge population of millisecond pulsars as suggested by Fermi-LAT observations of the inner Galaxy
Authors: F. Calore et al.
Presenter: Francesca Calore

Title: The Significance of the 750 GeV Fluctuation in the ATLAS Run 2 Diphoton Data
Authors: Davis, Jonathan H. and Fairbairn, Malcolm and Heal, John and Tunney, Patrick
Presenter: Christopher McCabe

Title: Improved limits on dark matter annihilation in the Sun with the 79-string IceCube detector and implications for supersymmetry
Authors: IceCube
Presenter: Hamish Silverwood

Sunday, January 10, 2016

Monday, January 11

Title: Unveiling the Gamma-Ray Source Distribution below the Fermi Detection Limit with Photon Statistics
Authors: H-S. Zechlin, A. Cuoco, et al.
Links: http://arxiv.org/abs/1512.07190
Presenter: M. Feyereisen

Title: Elastically decoupling dark matter
Authors: Kuflik et al.
Links: http://arxiv.org/abs/1512.04545
Presenter: C. McCabe

Title: A 750 GeV Portal: LHC Phenomenology and Dark Matter Candidates
Authors: Francesco D’Eramo, Jordy de Vries, Paolo Panci
Links: http://arxiv.org/abs/1601.01571
Presenter: R. Bartels

Title: Diphoton excesses at the LHC
Presenter: C. McCabe

Monday, December 14, 2015

Monday, December 14

Title: Warm-hot baryons comprise 5-10 per cent of filaments in the cosmic web
Authors: D. Eckert
Links: http://arxiv.org/abs/1512.00454
Presenter: Fabio Zandanel

Title: Deep XMM Observations of Draco rule out a dark matter decay origin for the 3.5 keV line (or: how we learned to stop worrying and love bananas after all)
Authors: Jeltema & Profumo
Link: http://arxiv.org/pdf/1512.01239.pdf
Presenter: Richard Bartels

Title: Hawking radiation, the Stefan-Boltzmann law, and unitarization
Authors: S. Giddings
Links: http://arxiv.org/pdf/1511.08221.pdf
Presenter: Fotis Dimitrakopoulos

Title: Improved WIMP scattering limits from the LUX experiment
Authors: LUX
Links: http://arxiv.org/pdf/1512.03506.pdf
Presenter: Christopher McCabe & Patrick Decowski

Title: Determining the local dark matter density with LAMOST data
Authors: Xia et al
Link: http://arxiv.org/pdf/1510.06810.pdf
Presenter: Hamish Silverwood




Sunday, November 29, 2015

Monday, November 30


Title: Origin of the Proton-to-Helium Ratio Anomaly in Cosmic Rays
Authors: N. Tomassetti
Links: http://arxiv.org/abs/1511.04460
Presenter: Daniele Gaggero

Title: Fermi-LAT Observations of High-Energy Gamma-Ray Emission Toward the Galactic Center
Authors: The Fermi-LAT Collaboration
Links: http://arxiv.org/abs/1511.02938
Presenter: Christoph Weniger

Title: A novel scenario for the possible X-ray line feature at ∼3.5 keV: Charge exchange with bare sulfur ions
Authors: L. Gu, J. Kaastra, A.J.J. Rasssen, et al
Links: http://arxiv.org/abs/1511.06557
Presenter: Emma Storm

Title: Cross-correlation of the Extragalactic Gamma-ray Background with Luminonous Red Galaxies
Authors: M. Shirasaki, S. Horiuchi and N. Yoshida
Links: http://arxiv.org/abs/1511.07092
Presenter: Mattia Fornasa

Title: Shocks in the Early Universe
Authors: Ue-Li Pen, Neil Turok
Links: http://arxiv.org/abs/1510.02985
Presenter: Fotis Dimitrakopoulos

Sunday, November 22, 2015

Monday, November 23

Title: Satellite galaxies in semi-analytic models of galaxy formation with sterile neutrino dark matter
Authors: M. R. Lovell, S. Bose, A. Boyarsky, S. Cole, C. S. Frenk, V. Gonzalez-Perez, R. Kennedy, O. Ruchayskiy, A. Smith
Presenter: Mark Lovell

Title: What statistics can tell us about strategy in tennis
Authors: I. Y. Kawashima, et al.
Presenter: Michael Feyereisen

Title: The black hole spin influence on accretion disk neutrino detection
Authors: Caballero et al.
Presenter: Irene Tamborra

Title: Parameter inference with estimated covariance matrices
Authors: Elena Sellentin, Alan F. Heavens
Links: http://arxiv.org/abs/1511.05969v1
Presenter: Thomas Edwards

Title: Modulated Natural Inflation
Authors: Rolf Kappl, Hans Peter Nilles, Martin Wolfgang Winkler
Links: http://arxiv.org/abs/1511.05560
Presenter: Ben Freivogel