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, November 15, 2015

Monday, November 16


Title: Dark matter cores all the way down 
Authors: J. I. Read, O. Agertz , M. L. M. Collins 
Presenter: Hamish Silverwood

Title: Galactic dark matter search via phenomenological astrophysics modelling
Authors: Xiaoyuan Huang, Torsten Enßlin, Marco Selig
Presenter: Francesca Calore

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: The APOSTLE simulations: solutions to the Local Group's cosmic puzzles
Authors: T. Sawala, C.S. Frenk, A. Fattahi, J. Navarro et al.
Presenter: Mark Lovell

Title: Planckian Interacting Massive Particles as Dark Matter
Author: Garny, Mathias and Sandora, McCullen and Sloth, Martin S.
Presenter: Ben Freivogel

Saturday, November 7, 2015

Monday, November 9


Title: Evidence against star-forming galaxies as the dominant source of IceCube neutrinos
Authors: Bechtol, Ahlers et al.
Links: http://arxiv.org/abs/1511.00688
Presenter: Daniele Gaggero

Title: KAT–7 observations of an unbiased sample of mass-selected galaxy clusters
Authors: G. Bernardi, T. Venturi, R. Cassano, et al
Links: http://arxiv.org/abs/1511.01022
Presenter: Emma Storm

Title: Tomographic Constraints on High-Energy Neutrinos of Hadronuclear Origin
Authors: Shin'ichiro Ando, Irene Tamborra, Fabio Zandanel
Links: http://arxiv.org/abs/1509.02444
Presenter: Shin’ichiro Ando

Title: Resolving the Extragalactic gamma-ray Background above 50 GeV with Fermi-LAT
Authors: The Fermi-LAT Collaboration
Links: http://arxiv.org/abs/1511.00693
Presenter: Michael Feyereisen

Title: The Coannihilation Codex
Authors: Baker, Mike et al
Links: http://arxiv.org/pdf/1510.03434.pdf
Presenter: Christopher McCabe

Saturday, October 31, 2015

Monday, November 2


Title: Evidence for Thermal X-Ray Line Emission from the Synchrotron-Dominated Supernova Remnant RX J1713.7-3946
Authors: Katsuda, Acero et al.
Links: http://arxiv.org/abs/1510.04025
Presenter: Jacco Vink

Title: A bright gamma-ray Galactic Centre excess and dark dwarfs: strong tension for Dark Matter annihilation despite Milky Way halo profile and diffuse emission uncertainties
Authors: K. N. Abazajian and R. E. Keeley
Links: http://arxiv.org/pdf/1510.06424.pdf
Presenter: Mattia Fornasa

Title: Dark matter implications of the WMAP-Planck Haze
Authors: Andrey E. Egorov, Jennifer M. Gaskins, Elena Pierpaoli, Davide Pietrobon
Link: http://arxiv.org/abs/1509.05135
Presenter: Jennifer Gaskins

Title: Scalar Dark Matter: Direct vs. Indirect Detection
Authors: Michael Duerr, Pavel Fileviez Pérez, and Juri Smirnov
Links: http://arxiv.org/pdf/1509.04282v1.pdf
Presenter: Thomas Edwards

Title: Future sensitivity of neutrino telescopes to dark matter annihilations from the cosmic diffuse neutrino signal.
Authors: Ángeles Moliné, Alejandro Ibarra, Sergio Palomares-Ruiz.
Links: http://arxiv.org/abs/1412.4308
Presenter: Roberta Diamanti

Saturday, October 24, 2015

Monday, October 26 

Title: The extragalactic background light, the Hubble constant, and anomalies: conclusions from 20 years of TeV gamma-ray observations
Authors: J. Biteau, D. Williams
Link: arXiv:1502.04166
Presenter: David Berge

Title: Neutron Star Merger Ejecta as Obstacles to Neutrino-Powered gamma-ray Bursts
Authors: Oliver Just, Martin Obergaulinger, H. Thomas Janka, Andreas Bauswein, Nicole Schwarz
Link: http://arxiv.org/pdf/1510.04288
Presenter: Patrick Crumley

Title: The scaling relations and the fundamental plane for radio halos and relics of galaxy clusters
Authors: Z. S. Yuan, J.L. Huan, Z. L. Wen
Links: http://arxiv.org/abs/1510.04980
Presenter: Emma Storm

Title: Two papers addressing the Leptophilic Dark Matter interpretation of XENON100 data
Authors: XENON100 Collaboration
Links: http://arxiv.org/abs/1507.07747, http://arxiv.org/abs/1507.07748 (back-to-back)
Presenter: Patrick Decowski

Friday, October 16, 2015

Monday, October 19

Title: Disrupted Globular Clusters can Explain the Galactic Center Gamma Ray Excess
Authors: Brandt & Kocsis
Link: http://arxiv.org/abs/1507.05616
Presenter: Christoph Weniger

Title: Search for extended gamma-ray emission from the Virgo galaxy cluster with Fermi-LAT
Authors: Fermi Collaboration
Presenter: Fabio Zandanel

Title: On the segregation of dark matter substructure
Authors: Frank C. van den Bosch, Fangzhou Jiang, Duncan Campbell, Peter Behroozi
Presenter: Mark Lovell

Title: MC^2: Mapping the DM distribution of the “Toothbrush” cluster
Authors: James Jee, William Dawson, Andra Stroe et al.
Link: http://arxiv.org/abs/1510.03486
Presenter: Richard Bartels

Friday, October 9, 2015

Monday, October 12

Title: The Galaxy Cluster Concentration-Mass Scaling Relation
Authors: A.M. Groener, D.M. Goldberg, and M. Sereno
Presenter: Michael Feyereisen

Title: S3 symmetry and the CKM matrix
Authors: Dipankar Das, Ujjal Kumar Dey and Palash Pal
Presenter: Richard Bartels

Title: Cosmological Relaxation of the Electroweak Scale
Authors:  Peter Graham et al
Link: 1504.07551
Presenter: Christopher McCabe


Title: Implications of unitarity and gauge invariance for simplified dark matter models
Authors: Felix Kahlhoefer, Kai Schmidt-Hoberg, Thomas Schwetz and Stefan Vogl
Presenter: Sebastian Liem

Friday, October 2, 2015

Monday, October 5

Title: A unified multi-wavelength model of galaxy formation
Authors: Cedric Lacey, Carlton Baugh, Carlos Frenk ++
Presenter: Mark Lovell

Title: Do radio mini-halos and gas heating in cool-core clusters have a common origin?
Authors: Luca Bravi, Myriam Gitti, and Gianfranco Brunetti
Presenter: Fabio Zandanel

Title: Observation of the new line at ~3.55 keV in X-ray spectra of galaxies
Authors: Dmytro Iakubovskyi
Presenter: Ralph Wijers
 
Title: A non-parametric method for measuring the local dark matter density
Authors:  Hamish Silverwood, Sofia Sivertsson, Pascal Steger, Justin I. Read, Gianfranco Bertone
Link: http://arxiv.org/abs/1507.08581
Presenter: Hamish Silverwood

Title: S3 symmetry and the CKM matrix
Authors: Dipankar Das, Ujjal Kumar Dey and Palash Pal
Presenter: Richard Bartels

Authors:  Peter Graham et al
Link: 1504.07551
Presenter: Christopher McCabe