Antares-nikhef May 2011

antares-nikhef@nikhef.nl

4 participants
7 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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AWG meeting
by Mieke Bouwhuis 03 Aug '11

03 Aug '11

Hello, You can attend the AWG meeting tomorrow (24/3) at 10.00 in H135. Mieke

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bekendmaking (fwd)
by Maarten de Jong 31 May '11

31 May '11

---------- Forwarded message ---------- Date: Wed, 15 Dec 2010 13:23:58 +0100 From: Fred Bulten <b23(a)nikhef.nl> To: Stan Bentvelsen <stanb(a)nikhef.nl>, Marcel Merk <i93(a)nikhef.nl>, Maarten de Jong <mjg(a)nikhef.nl>, Eric Laenen <t45(a)nikhef.nl>, Niels van Bakel <nielsvb(a)nikhef.nl>, Jo van den Brand <jo(a)nikhef.nl>, Ruud Kluit <n21(a)nikhef.nl>, Patrick Werneke <werneke(a)nikhef.nl>, Wim Heubers <wimh(a)nikhef.nl>, Arjen van Rijn <avr(a)nikhef.nl> Cc: Joke Tierie <joke(a)nikhef.nl> Subject: bekendmaking Beste groeps-en programmaleiders, Zouden jullie binnen jullie groep een mail willen rondsturen betreffende het kerstdiner? We kunnen nog wel wat aanmeldingen gebruiken en vanaf morgen zit waarschijnlijk een hele hoop collega's om Nijmegen. Dit is de tekst die we eerder hebben rondgestuurd, maar je mag er natuurlijk ook een eigen tekst van maken: Ook dit jaar nodigt de Directie jullie uit voor het Kerstdiner op 23 december 2010. Jullie kunnen vanaf vandaag inschrijven. Het Kerstdiner is voor medewerkers, stagiaires en studenten. Mail naar *joke(a)nikhef.nl* en vermeld of je je partner meeneemt en eventuele wensen qua halal, kosjer of vegetarisch. *De inschrijving sluit op maandagmorgen 20-12 om 9.00 uur.* De borrel begint om 16.30 uur en het diner om 18.30 uur. ------------------------------------------------------------------------------------------------------------------------------- Also this year the Management invites you for the Christmas dinner, this year on December 23. This dinner is for employees, students and trainees. You can now subscribe by sending a mail to *joke(a)nikhef.nl* and mention if you will bring your partner. Also mention if you want to eat vegetarian, halal or kosjer. *The deadline to register is Monday 20-12 at 9.00* The drinks start at 16.30 and the dinner starts at 18.30 -- Met vriendelijke groet/With kind regards, ********************************************************* Fred Bulten Nikhef Nationaal instituut voor subatomaire fysica Financiële afdeling/Finance department Science Park 105 1098 XG AMSTERDAM tel: 0031 - 20 - 5925020 fax: 0031 - 20 - 5925155 *********************************************************

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[Theory-center] Reminder: Theory Center Meeting Fri May 27
by Eric Laenen 23 May '11

23 May '11

Dear colleagues, a (quite late again, apologies again..) reminder: a Theory Center Meeting is scheduled for next friday, 27-5-2011. As usual, please register at http://www.nikhef.nl/pub/theory/registration/index.php Best wishes, Eric Agenda May 27 * Time: 10.00 - 17.00 * Talk 10.30 - 10.45, H320 pre-talk question session * Talk 10.45-11.15, H320 Johannes Oberreuter (UvA): "The everpresent eta-problem: knowledge of all hidden sectors required" * Time: 15.00 - 16.00 Student meeting/discussion TBA: "TBA" * Talk 16.15-16.30-17.00, H320 Damien George (Nikhef) "A systematic approach to model building" I will discuss a technique that exhaustively determines all continuous symmetries of a set of equations, and show how this method can be applied to particle physics and model building. Given an arbitrary action with free parameters, one can systematically determine all possible symmetries, along with all parameter relationships that yield an enhanced symmetry group. If the action contains a symmetry that is spontaneously broken, the method determines the original symmetry, along with any field redefinition required to restore the non-broken phase. * 17.00 Borrel _______________________________________________ Theory-center mailing list Theory-center(a)nikhef.nl https://mailman.nikhef.nl/mailman/listinfo/theory-center

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group meeting
by Claudio Bogazzi 18 May '11

18 May '11

dear all, today the group meeting is in H331 (apparently someone forgot to give the key of H3320 back) 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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group meeting
by Claudio Bogazzi 04 May '11

04 May '11

dear all, today the group meeting is in H331 c. -- 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, April 29
by Eric Laenen 03 May '11

03 May '11

Dear colleagues, a (quite late, apologies..) reminder: a Theory Center Meeting is scheduled for next friday, 18-2-2011. As usual, please register at http://www.nikhef.nl/pub/theory/registration/index.php Best wishes, Eric Agenda: * Time: 10.00 - 17.00 * Talk 11.00-12.00, H320 Nikhef colloquium: Petr Vogl (Caltech) "How difficult would it be to detect the Cosmic Neutrino Background?" * Time: 15.00 - 16.00 Student meeting/discussion Rob Knegjens (Nikhef): "Effective Field Theories" An effective field theory is an approximation of a more complete theory where the degrees of freedom not relevant to the energy scale of interest have been removed. The (famous) example I will look at is Four Fermi Theory, but there are of course many more (the Standard Model likely being one as well). The focus of my talk will be on the Operator Product Expansion for weak current-current interactions, which I plan to discuss in the context of a specific B meson decay. In particular, I will discuss the matching procedure and the summing of large logs using the renormalization group. * Talk 16.15-16.30-17.00, H320 S. Mert Aybat (Nikhef) "TMD Factorization and Evolution for TMD Correlation Functions" * 17.00 Borrel _______________________________________________ Theory-center mailing list Theory-center(a)nikhef.nl https://mailman.nikhef.nl/mailman/listinfo/theory-center

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Antares-nikhef May 2011