09/05/2018 - 09/05/2018
ICCUB SEMINAR – Gaia as gravitational wave detector
DAM Seminar
ESA's second space astrometry mission Gaia started its scientific operations in July 2014. During its routine science operation Gaia is delivering an immense dataset of high-accuracy positional observations which already led to two Data Releases containing high-accuracy position, parallaxes and proper motions of over a billion sources.
17/04/2018 - 17/04/2018
ICCUB SEMINAR – The Imaging X-ray Polarimetry Explorer (IXPE)
DAM Seminar Room (724), 7th floor
IXPE, the Imaging X-ray Polarimetry Explorer, has been selected by NASA as the next mission in the Small Explorer Program, for a launch in early 2021. IXPE, a collaboration between NASA and ASI (the Italian Space Agency), will reopen, after a gap of more than 40 years, the X-ray polarimetric observing window.
11/04/2018 - 11/04/2018
ICCUB SEMINAR – Active galactic nuclei as cosmological probes
DAM Seminar Room (724), 7th floor
I will present the latest results on our analysis of the non-linear X-ray to UV relation in a sample of optically selected quasars from the Sloan Digital Sky Survey, cross-matched with the most recent XMM-Newton and Chandra catalogues. I will show that this correlation is not only very tight, but can be potentially even tighter by including a further dependence on the emission line full-width half maximum.
11/04/2018 - 11/04/2018
ICCUB SEMINAR – QCD Axion Searches with Microwave Filters
Aula 507 (Pere Pascual)
We have proposed, designed and constructed a variant of the conventional axion haloscope concept that could be competitive in the search for dark matter axions of masses in the decade 10-100 μeV. Our haloscope consists of an array of small microwave cavities connected by rectangular irises, in an arrangement commonly used in radio-frequency filters.
10/04/2018 - 12/04/2018
ICCUB COURSE – Astrophysical Black Holes
DAM Seminar Room (724), 7th floor
The course will provide fundamental notions about astrophysical black holes: the evidence for their existence, the behaviour of matter around them, the classes of sources in which they reside, the techniques to measure their basic properties, and in particular their angular momentum.
23/03/2018 - 23/03/2018
ICCUB SEMINAR – LIGO/Virgo and the quest for gravitational waves
DAM Seminar Room (724), 7th floor
The Nobel-Prize-winning observations of gravitational waves by the Advanced LIGO and Advanced Virgo detectors have opened an entirely new window to study the universe. The detection of the first gravitational-wave signal, GW150914, is one of the greatest scientific milestones of all time, confirming a century-old prediction of Albert Einstein’s Theory of General Relativity.
02/03/2018 - 02/03/2018
ICCUB SEMINAR – Connecting Type Ia supernovae with the metallicity of their progenitors
DAM seminar room (724), 7th floor
Thermonuclear explosions of carbon-oxygen white dwarfs (CO WDs), or Type Ia supernovae (SNIa) are important tools for cosmology. SNIa observations show the recent acceleration and previous deceleration of the expansion rate of the Universe, in agreement with a 70% of the energy-matter content of the Universe in form of dark energy.
01/03/2018 - 01/03/2018
ICCUB SEMINAR – Finding the double sunsets: close binary stars, large spectroscopic surveys
DAM seminar room (724), 7th floor
I will discuss our present knowledge of the statistics of stellar multiplicity (the multiplicity fraction and the distribution of periods, mass ratios, and eccentricities), and the implications for stellar evolution, in particular for Type Ia Supernovae (SN Ia).
27/02/2018 - 27/02/2018
ICCUB SEMINAR – Trusting Theory in Cosmological Tests of Gravity
DAM seminar room (724), 7th floor
Modifications to gravity can provide attractive alternatives to the dark components of the standard model of cosmology. These modifications to general relativity (GR) must be hidden at small scales where theory is well tested, and so one naturally looks to the large scales in order to detect any deviations from GR.
21/02/2018 - 21/02/2018
ICCUB SEMINAR – Radiative Transfer Modeling of Lyman-Alpha Emitters as a Probe of Reionization
DAM seminar room (724), 7th floor
Reionization is the last major phase transition in the Universe during which the Intergalactic medium (IGM) changed from a fully neutral to highly ionized state. As Lyman-alpha emission from star-forming galaxies is sensitive to the neutral gas environment, Lyman-alpha emitters (LAEs) are among the few observational probes to the reionization process.
19/02/2018 - 19/02/2018
ICCUB SEMINAR – Probing the Dark Universe with Gravitational Waves
DAM seminar room (724), 7th floor
Gravitational wave (GW) astronomy has came to revolutionize our understanding of astrophysics, cosmology and fundamental physics. GWs from binary black-hole (BH) mergers allow us to learn about the population of BHs, their origin and their role through the history of the universe. If these BHs have a primordial origin and are abundant enough, they could comprise a large fraction of the Dark Matter (DM).
09/02/2018 - 09/02/2018
ICCUB SEMINAR – A review of the Fermi-LAT GeV Excess in light of its likely Stellar Origin
DAM seminar room (724), 7th floor
The Fermi-LAT has detected an anomalous signal at energies of a few GeV from the Galactic Center, the so called Galactic-Center Excess (GCE). The morphology of the GCE is roughly spherically symmetric. Dark matter has long been one of the leading interpretations of the excess, since the signal appears consistent with the expectation from a typical annihilating WIMP DM candidate.
30/01/2018 - 30/01/2018
ICCUB SEMINAR – Illuminating the faint Universe
DAM seminar room (724), 7th floor
Only once in a generation is there the opportunity to reveal the basic properties of a new galaxy type for the first time. With the advent of more sensitive instruments in the current large telescopes, an entirely new universe is being revealed, as it had never been seen before.
15/01/2018 - 29/01/2018
ICCUB COURSE – Course on “Scientific Philosophy”
Sala de Graus (aulari). Facultat de Física
The course addresses the fundamental problems of scientific philosophy, that is, philosophy inspired by science. The approach is not historical but based on concrete problems and proposals for solutions to them.
11/12/2017 - 15/12/2017
ICCUB COURSE – Course on “Numerical Relativity”
Room 507 (Pere Pascual), 5th floor
Topics Covered, Preliminary Course Outline:
Generalitat de CatalunyaUniversitat de BarcelonaUniversitat Autònoma de BarcelonaUniversitat Politècnica de CatalunyaConsejo Superior de Investigaciones CientíficasCentres de Recerca de Catalunya