UCD School of Physics Seminar Series

Upcoming events: 

Colloquium

Thursday October 22nd 2020 at 2pm via Zoom [LINK]

Multi-messenger astronomy including gravitational-wave

Prof. Marica Branchesi 

Gran Sasso Science Institute and INFN

Branchesi
A new exploration of the Universe has recently started through gravitational-wave observations. On August 17, 2017, the first observation of gravitational waves from the inspiral and merger of a binary neutron-star system by the Advanced LIGO and Virgo network, followed 1.7 s later by a weak short gamma-ray burst detected by the Fermi and INTEGRAL satellites initiated the most extensive world-wide observing campaign which led to the detection of multi-wavelength electromagnetic counterparts. Multi-messenger discoveries are revealing the enigmas of the most energetic transients in the sky, probing neutron-stars physics, relativistic astrophysics, nuclear physics, nucleosynthesis, and cosmology. The talk will give an overview of the astrophysical implications of the gravitational-wave and multi-messenger observations, the prospects and challenges of the current and future gravitational-wave detectors.

UCD School of Physics, Belfield Campus, Science Centre North, Seminar Room 128 at 2pm / Zoom

 

Seminar

Thursday November 5th 2020 at 2pm via Zoom

Title TBA

Dr. Francesca Pietracaprina 

MSCA Fellow, Trinity College Dublin

ABSTRACT: TBA

UCD School of Physics, Belfield Campus, Science Centre North, Seminar Room 128 at 2pm / Zoom

 

Seminar

Tuesday November 10th 2020 at 2pm via Zoom

Stage Transfer Presentations

TBD 

UCD School of Physics

TBD

UCD School of Physics, Belfield Campus, Science Centre North, Seminar Room 128 at 2pm / Zoom

 

Colloquium

Thursday November 26th 2020 at 2pm via Zoom [LINK]

Magnetism of correlated systems: DFT+DMFT

Prof. Alexander Lichtenstein 

University of Hamburg

TBA

UCD School of Physics, Belfield Campus, Science Centre North, Seminar Room 128 at 2pm / Zoom

 

Date TBA

Nanosatellites for Gamma-Ray Astronomy

Prof Lorraine Hanlon

UCD School of Physics

Bio / Profile

ABSTRACT: Gamma-ray space missions have had extensive success in discovering and characterising the transient high-energy universe, including Gamma-Ray Bursts (GRBs). Their connection to catastrophic events involving stellar-mass objects means that GRBs are also excellent electromagnetic counterpart candidates to gravitational wave sources. The discovery of a short-lived gamma-ray transient by Fermi/GBM and INTEGRAL/SPI-ACS, associated with the gravitational wave source GW170817 discovered by Advanced LIGO, has now provided direct evidence for the binary neutron star merger origin of a subset of GRBs. The current fleet of high energy astrophysics missions includes INTEGRAL, Swift, Fermi, and other missions that make up the Inter-Planetary Network. In many cases these missions are all approaching, or have already exceeded, their nominal lifetimes.  There may therefore be a gap in the availability of future high-energy, wide-field facilities, that coincides with the timeline for major upgrades and achievement of design sensitivity for ground-based gravitational wave (GW) detectors from the early 2020’s and the future LISA mission (c. 2034). One approach to ensuring all-sky coverage for the detection of GRBs is to deploy small instruments on one or more nanosatellite platforms. While having limitations of size and detector volume, there are significant advantages such as rapid implementation timescales, relatively modest costs, in-orbit technology demonstration and wide accessibility. Several such nanosatellite gamma-ray mission concepts are now in development, including EIRSAT-1, and will be discussed in this talk.

Organiser/contact: Prof Lorraine Hanlon

UCD School of Physics, Belfield Campus, Science Centre North, Seminar Room 128 at 2pm

 

Archive of previous seminars: click here