Calendar

   April  2014 »
SMTWTFS
 123
  • ITFA staff lunch
    Starts: 1:00 pm
    Ends: 03/04/2014 - 2:00 pm
4
  • Master thesis presentation Arnon Lesage
    Starts: 3:00 pm
    Ends: 04/04/2014 - 4:00 pm
    Location: A1.04
    Description: Master thesis presentation
    Si nanocrystals in multilayer structures
5
678
  • ITFA staff lunch (backup)
    Starts: 12:00 pm
    Ends: 08/04/2014 - 1:00 pm
  • Ihef vergadering op Nikhef
    Starts: 12:00 pm
    Ends: 08/04/2014 - 1:00 pm
910
  • ITFA masters lunch
    Starts: 1:00 pm
    Ends: 10/04/2014 - 2:00 pm
  • Seminar: Samaya Nissanke (Colorado)
    Starts: 2:30 pm
    Ends: 10/04/2014 - 3:30 pm
    Location: C4.278
    Description: Follow the chirp: seeing and listening to the transient Universe

    The mergers of binary compact objects (black holes, neutron stars, white dwarfs) are amongst some of the most violent events in the Universe. The physics driving these events in strong field gravity are extremely complex, rich but still remain elusive. These cosmic laboratories present us now with both a challenge and an opportunity. The challenge is to explain the physics at play in strong-field gravity in Universe. The opportunity is to detect the accompanying radiation and panoply of multi-messenger particles (high energy neutrinos, cosmic rays and gravitational waves) for the first time with a suite of time-domain telescopes and experiments. In this pivotal new era of multi-messenger astronomy, the most compelling astrophysical sources are neutron star binary mergers, which should emit both in electromagnetic (EM) and gravitational waves (GW). I will first review the most recent advances in this blossoming field of EM+GW astronomy, which combines two active disciplines: time-domain astronomy and general relativity. I will discuss the promises of this new convergence by illustrating the wealth of astrophysical information that a combined EM+GW measurement would immediately bring. I will then outline the main challenge that lies ahead for this new field in pinpointing the sky location of neutron star mergers using GW detectors and EM wide-field synoptic surveys.
1112
1314
  • faculty colloquium IvI
    Starts: 10:00 am
    Ends: 14/04/2014 - 11:00 am
    Location: C1.110
    Description: 10.00 Dean's perspective
    10.15 Scientific highlights from one of the research institutes
    10.30 Guest speaker
  • GRAPPA Seminar: David Marsh (Oxford)
    Starts: 12:00 pm
    Ends: 14/04/2014 - 1:00 pm
    Location: C4.174
    Description: Title:
    On the cosmology of string theory axions, and their observational signatures

    Abstract:
    The existence of a present-day relativistic background density of axion-like particles (hence, axions) is a feature common to large classes of stabilised string compactifications. In this talk, I will review the post-inflationary cosmology of these models and discuss two of their observational signatures: dark radiation, and an excess of soft X-rays from galaxy clusters. The former of these signatures is persistently hinted in studies of the CMB, and the latter has been established with a high significance for 18 years, yet still lacking a fully satisfactory astrophysical explanation. Finally, I will discuss how the recent claimed detection of a 3.5 keV line in galaxy clusters is not well explained by dark matter decaying into photons, but can be explained by dark matter decaying into axions.
151617
  • ITFA staff lunch
    Starts: 1:00 pm
    Ends: 17/04/2014 - 2:00 pm
  • ITFA staff lunch
    Starts: 1:00 pm
    Ends: 17/04/2014 - 2:00 pm
1819
202122
  • ITFA staff lunch (backup)
    Starts: 12:00 pm
    Ends: 22/04/2014 - 1:00 pm
2324
  • ITFA masters lunch
    Starts: 1:00 pm
    Ends: 24/04/2014 - 2:00 pm
  • IoP Colloquium/ Pedro Ferreira, Oxford
    Starts: 4:00 pm
    Ends: 24/04/2014 - 5:00 pm
    Location: C1.110
    Description: Pedro Ferreira (Oxford)
    Testing Gravity with Cosmology
  • IoP drinks
    Starts: 5:00 pm
    Ends: 24/04/2014 - 6:00 pm
2526
2728
  • GRAPPA Seminar: Fabian Schmidt (MPA)
    Starts: 12:00 pm
    Ends: 28/04/2014 - 1:00 pm
    Location: C4.174
    Description: Probing the Primordial Universe with Galaxy Clustering and Shapes

    One of the primary goals of cosmology is to elucidate the origin of structure in the Universe. The currently most widely accepted paradigm is the theory of inflation, an epoch of extremely rapid expansion at a very early phase in the history of the Universe. A significant effort in cosmology is directed toward testing this hypothesis, culminating recently in the claimed detection of primordial gravitational waves by the BICEP2 team. I will show how we can use the clustering of galaxies, as well as statistics of their observed shapes, to learn about the physics of inflation and to potentially confirm the BICEP2 detection by completely independent means. These results point to a fascinating connection between the largest observable scales in the cosmos and physics at energies far beyond the reach of accelerators on Earth.
2930 
  • ITFA staff lunch
    Starts: 1:00 pm
    Ends: 03/04/2014 - 2:00 pm
  • Master thesis presentation Arnon Lesage
    Starts: 3:00 pm
    Ends: 04/04/2014 - 4:00 pm
    Location: A1.04
    Description: Master thesis presentation
    Si nanocrystals in multilayer structures
  • ITFA staff lunch (backup)
    Starts: 12:00 pm
    Ends: 08/04/2014 - 1:00 pm
  • Ihef vergadering op Nikhef
    Starts: 12:00 pm
    Ends: 08/04/2014 - 1:00 pm
  • ITFA masters lunch
    Starts: 1:00 pm
    Ends: 10/04/2014 - 2:00 pm
  • Seminar: Samaya Nissanke (Colorado)
    Starts: 2:30 pm
    Ends: 10/04/2014 - 3:30 pm
    Location: C4.278
    Description: Follow the chirp: seeing and listening to the transient Universe

    The mergers of binary compact objects (black holes, neutron stars, white dwarfs) are amongst some of the most violent events in the Universe. The physics driving these events in strong field gravity are extremely complex, rich but still remain elusive. These cosmic laboratories present us now with both a challenge and an opportunity. The challenge is to explain the physics at play in strong-field gravity in Universe. The opportunity is to detect the accompanying radiation and panoply of multi-messenger particles (high energy neutrinos, cosmic rays and gravitational waves) for the first time with a suite of time-domain telescopes and experiments. In this pivotal new era of multi-messenger astronomy, the most compelling astrophysical sources are neutron star binary mergers, which should emit both in electromagnetic (EM) and gravitational waves (GW). I will first review the most recent advances in this blossoming field of EM+GW astronomy, which combines two active disciplines: time-domain astronomy and general relativity. I will discuss the promises of this new convergence by illustrating the wealth of astrophysical information that a combined EM+GW measurement would immediately bring. I will then outline the main challenge that lies ahead for this new field in pinpointing the sky location of neutron star mergers using GW detectors and EM wide-field synoptic surveys.
  • faculty colloquium IvI
    Starts: 10:00 am
    Ends: 14/04/2014 - 11:00 am
    Location: C1.110
    Description: 10.00 Dean's perspective
    10.15 Scientific highlights from one of the research institutes
    10.30 Guest speaker
  • GRAPPA Seminar: David Marsh (Oxford)
    Starts: 12:00 pm
    Ends: 14/04/2014 - 1:00 pm
    Location: C4.174
    Description: Title:
    On the cosmology of string theory axions, and their observational signatures

    Abstract:
    The existence of a present-day relativistic background density of axion-like particles (hence, axions) is a feature common to large classes of stabilised string compactifications. In this talk, I will review the post-inflationary cosmology of these models and discuss two of their observational signatures: dark radiation, and an excess of soft X-rays from galaxy clusters. The former of these signatures is persistently hinted in studies of the CMB, and the latter has been established with a high significance for 18 years, yet still lacking a fully satisfactory astrophysical explanation. Finally, I will discuss how the recent claimed detection of a 3.5 keV line in galaxy clusters is not well explained by dark matter decaying into photons, but can be explained by dark matter decaying into axions.
  • ITFA staff lunch
    Starts: 1:00 pm
    Ends: 17/04/2014 - 2:00 pm
  • ITFA staff lunch
    Starts: 1:00 pm
    Ends: 17/04/2014 - 2:00 pm
  • ITFA staff lunch (backup)
    Starts: 12:00 pm
    Ends: 22/04/2014 - 1:00 pm
  • ITFA masters lunch
    Starts: 1:00 pm
    Ends: 24/04/2014 - 2:00 pm
  • IoP Colloquium/ Pedro Ferreira, Oxford
    Starts: 4:00 pm
    Ends: 24/04/2014 - 5:00 pm
    Location: C1.110
    Description: Pedro Ferreira (Oxford)
    Testing Gravity with Cosmology
  • IoP drinks
    Starts: 5:00 pm
    Ends: 24/04/2014 - 6:00 pm
  • GRAPPA Seminar: Fabian Schmidt (MPA)
    Starts: 12:00 pm
    Ends: 28/04/2014 - 1:00 pm
    Location: C4.174
    Description: Probing the Primordial Universe with Galaxy Clustering and Shapes

    One of the primary goals of cosmology is to elucidate the origin of structure in the Universe. The currently most widely accepted paradigm is the theory of inflation, an epoch of extremely rapid expansion at a very early phase in the history of the Universe. A significant effort in cosmology is directed toward testing this hypothesis, culminating recently in the claimed detection of primordial gravitational waves by the BICEP2 team. I will show how we can use the clustering of galaxies, as well as statistics of their observed shapes, to learn about the physics of inflation and to potentially confirm the BICEP2 detection by completely independent means. These results point to a fascinating connection between the largest observable scales in the cosmos and physics at energies far beyond the reach of accelerators on Earth.