January 5th or January 12th

Hello everybody,

I know that the 5th is the day when most people will be back to work at IAP after the holidays.

However, attendance could still be low due to many and (un)expected side effects of the celebrations.

A quick poll could solve the problem: please send me an email at iocco@iap.fr only if you plan to attend the Cafe on january 5th; I will post an ad with the first 2009 Cafe date as soon as possible, and upload some papers.

Je vous souhaite une tres Bonne Nouvelle Annee!

Fabio

Café GReCO on Dec 15th

Here are a couple of papers I co-authored, which I may discuss:

*L. Pieri, A. Pizzella, E.M.Corsini, E. Dalla Bontà, F. Bertola

Could the Fermi-LAT detect gamma-rays from Dark Matter annihilations in the dwarf galaxies of the Local Group?

arXiv:0812.1494

*C. Giocoli, L. Pieri, G. Tormen, J. Moreno

A Merger Tree with Microsolar Mass Resolution: Application to gamma-ray Emission from Subhalo Population

arXiv:0811.2426

Also look at this paper:

*M. Cerdonio, R. De Pietri, Ph. Jetzer, M. Sereno

Local Dark Matter searches with LISA

arXiv:0811.4711

It would be very nice if somebody dealing with gravitational waves could make a very brief and informal introduction to GW and LISA.

-- I'd like to add the following paper, discussed yesterday with Martin
(see also the figure above for a visualization of the Milagro hotspot)

A. A. Abdo et al. (Milagro Collaboration), Phys. Rev. Lett. 101, 221101 (2008).

there is also a 'Viewpoint' discussion at

http://physics.aps.org/viewpoint-for/10.1103/PhysRevLett.101.221101

Gf

Café GReCO on Dec 8th

We will discuss the paper proposed by Alexander, as well as a few Dark Matter papers (see below) along with other papers you may add!

M.Taoso, S. Ando, G. Bertone, S. Profumo

Angular correlations in the cosmic gamma-ray background from dark matter annihilation around intermediate-mass black hole

arXiv:0811.4493

M. Lattanzi, J. Silk

Can the WIMP annihilation boost factor be boosted by the Sommerfeld ehnancement?

arXiv:0812.0360

T. Jeltema, J. Kehayias, S. Profumo

Gamma Rays from Cluster of Galaxies: Cosmic Rays versus Dark Matter

arXiv:0812.0597

A. Boyarsky, J. Lesgourges, O. Ruchayskiy, M. Viel

Lyman-alpha constraints on warm and on warm-plus-cold dark matter models

arXiv:0812.0010

Carter-like constants of the motion

I can discuss this paper next Monday.

arXiv:0812.0110 [ps, pdf, other]
Title: Carter-like constants of the motion in Newtonian gravity and electrodynamics
Author: Clifford M. Will

Cafe GReCO, 1 December 2008

Today (1.30 pm in Salle du Conseil), we will discuss the
papers suggested by Lidia (arXiv: 0810.4995, Nature
Letters vol. 456 page 362 and arXiv: 0811.3894), along
with the (many!) papers on the possible intepretations
of the PAMELA data

http://arxiv.org/find/all/1/all:+pamela/0/1/0/all/0/1

We will also discuss arXiv:0810.2826 suggested by
Luc (see below).

Gf

Recent results on cosmic ray electrons and positrons

A dedicated session on the recent results of cosmic ray electrons and positrons will be organized in the next future. Meanwhile, you can have a look at the papers on the data:

PAMELA DATA

arXiv: 0810.4995 

Observation of an anomalous positron abundance in the cosmic radiation

ATIC

Nature Letters vol. 456 page 362

An excess of cosmic ray electrons at energies of 300-800 geV

HESS

arXiv: 0811.3894

The energy spectrum of cosmic-ray electrons at TeV energies

arXiv:0810.2826

Je peux présenter cet article:

arXiv:0810.2826
Title: The relation between stellar mass and weak lensing signal around galaxies: Implications for MOND
Authors: Lanlan Tian, Henk Hoekstra, Hongsheng Zhao

Cafe GReCO, 24 November 2009

We resume our weekly meetings on Monday, 24/11/2009. In occasion of the first meeting of the new academic year, we will introduce the new members and discuss about the organization issues (organizers, topics to be discussed, structure of the meetings etc.). We expect this meeting to last 1/2 hour or so, so please grab a cup of coffee and meet us at 1.30pm in Salle du Conseil.

Cafe GReCO, Special *DAMA*

Let's meet on Thursday, July 24 at 2pm to discuss the DAMA result, and its possible intepretations. Here are some useful links: the (most recent) DAMA paper is

arXiv:0804.2741 [ps, pdf, other]

Title: First results from DAMA/LIBRA and the combined results with DAMA/NaI

Authors: R. Bernabei et al.

possible interpretations and further constraints can be found in the following papers

arXiv:0804.4518 [ps, pdf, other]

Title: Mirror dark matter and the new DAMA/LIBRA results: A simple explanation for a beautiful experiment

Authors: R. Foot

arXiv:0806.3746 [ps, pdf, other]

Title: Explaining the DAMA Signal with WIMPless Dark Matter

Authors: Jonathan L. Feng, Jason Kumar, Louis E. Strigari

arXiv:0806.3989 [ps, pdf, other]

Title: DAMA and WIMP dark matter

Authors: Frank Petriello, Kathryn M. Zurek

arXiv:0806.4099 [ps, pdf, other]

Title: Interpreting the recent results on direct search for dark matter particles in terms of relic neutralino

Authors: A. Bottino, F. Donato, N. Fornengo, S. Scopel

arXiv:0807.2250 [ps, pdf, other]

Title: Inelastic Dark Matter in Light of DAMA/LIBRA

Authors: Spencer Chang, Graham D. Kribs, David Tucker-Smith, Neal Weiner

arXiv:0807.2926 [ps, pdf, other]

Title: Solar neutrino limit on the axion-like interpretation of the DAMA signal

Authors: Paolo Gondolo, Georg Raffelt

arXiv:0807.0879 [ps, pdf, other]

Title: Experimental constraints on a dark matter origin for the DAMA annual modulation effect

Authors: C.E. Aalseth, et al.

Welcome

Welcome to the blog of the GReCO group at the Institut d'Astrophysique de Paris. For the moment we plan to use it only as a tool to put together the discussion list for our weekly meetings and also for announcements of interest to the members of the group.