Antares-nikhef September 2011

antares-nikhef@nikhef.nl

4 participants
4 discussions

seminar tomorrow 11 am : Anisotropy Studies with the Pierre Auger Observatory
by Aart Heijboer 29 Feb '12

29 Feb '12

Hi all, Tomorrow at 11 am in h320 there will be a seminar by Stephan Schulte, who is interviewing for a post-doc position in our group. Title and abstract are below. I'd appreciate it if you come and ask questions! best regards, Aart. Anisotropy Studies with the Pierre Auger Observatory Stephan Schulte - RWTH Aachen University The Pierre Auger Observatory (PAO) in Malargüe (Argentina) reconstructs the arrival directions and energies of cosmic rays with energies exceeding 10^{18} eV. Under the assumption that the primary particles at the highest energies are only minimally deflected by the intergalactic magnetic field, it can be tested whether their arrival directions overlap with astronomical objects. In this context the PAO has observed a correlation of ultra high energy cosmic rays (UHECR) with nearby active galactic nuclei (AGN). In this talk a complementary approach is chosen. To this end, Autocorrelation methods are studied. They have the advantage of being independent of source and propagation models predicting the distribution of the arrival directions of UHECRs. However, to discover the assets and drawbacks of each method a Monte Carlo study is performed using simulated data sets based on a few of these modes. In the end, we compare the result when applied to data to the one of the catalogue-dependent correlation analysis by using the same event set.

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group meeting
by Claudio Bogazzi 28 Sep '11

28 Sep '11

Dear all, today the group meeting will be held in H331. Cheers, Claudio -- Claudio Bogazzi, PhD. Student, FOM Institute/NIKHEF Amsterdam Address: Dirk van Hasseltssteeg 26B 1012 NE, Amsterdam The Netherlands Office Phone: +31 20 5925095 Portable Phone: +31 639656573 +39 3287081165

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[Theory-center] Reminder: theory center meeting, friday Sept. 30
by Eric Laenen 27 Sep '11

27 Sep '11

Dear colleagues, a reminder that a Theory Center Meeting is scheduled for next friday, 30-9-2011. As usual, please register at http://www.nikhef.nl/pub/theory/registration/index.php See below for the agenda. Best wishes, Eric Agenda September 30 * Time: 10.00 - 17.00 * Talk 10.30 - 10.45, H320 pre-talk question session * Talk 10.45-11.15, H320 Pierre Artoisenet "Matrix element methods for discovery at the LHC" * Time: 15.00 - 16.00 Student meeting/discussion Michele Maio: "Massless scalars in two dimensions" The aim of this student seminar is to derive the Virasoro algebra for the massless two-dimensional scalar field. First I show how to describe the two-dimensional surface swept out in spacetime by a (one-dimensional) string. We find the action, the equation of motion and the propagator. In the next (technical) part I discuss the operator product expansion (OPE). With the OPE in hand we then finally deduce the corresponding Virasoro algebra and discuss how to build up the complete spectrum of states from this. If time permits we will touch upon the conformal subtleties coming from working in two spacetime dimensions. * Talk 16.15-16.30-17.00, H320 Jordy de Vries "P and T violating form factors of the deuteron" * 17.00 Borrel _______________________________________________ Theory-center mailing list Theory-center(a)nikhef.nl https://mailman.nikhef.nl/mailman/listinfo/theory-center

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Pizza lunch Tuesday (26th) around 12:30
by Corey Reed 26 Sep '11

26 Sep '11

Hi, So that you don't have to mourn my impending departure on an empty stomach, I'm planning to have a pizza lunch tomorrow around 12:30 in the conference table area of the 3rd floor hallway. Hope to see you there! - Corey

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Antares-nikhef September 2011