Past Pizza Lunches

Number of entries: 153

28
April 2017

CosmoHub on Hadoop: a web portal to analyze and distribute massive cosmological data


Start: 12:00h
Speaker: Jorge Carretero (PIC )
Place: Sala Alberto Lobo (ICE building, Campus UAB)

We present CosmoHub, a web platform to perform interactive analysis of massive cosmological data without any SQL knowledge. CosmoHub is built on top of Apache Hive, which is an Apache Hadoop ecosystem component, which facilitates reading, writing, and managing large datasets.   CosmoHub is…
Start: 12:00h
Speaker: Jorge Carretero (PIC )
Place: Sala Alberto Lobo (ICE building, Campus UAB)

We present CosmoHub, a web platform to perform interactive analysis of massive cosmological data without any SQL knowledge. CosmoHub is built on top of Apache Hive, which is an Apache Hadoop ecosystem component, which facilitates reading, writing, and managing large datasets.   CosmoHub is hosted at the Port de Informació Científica (PIC) and currently provides support to several international cosmology projects such as the Euclid space ESA mission, the Dark Energy Survey (DES), the Physics of the Accelerated Universe (PAU) and the Marenostrum Institut de Ciències de l'Espai Simulations (MICE). More than two billion objects, from public and private data, as well as observed and simulated data, are available among all projects. In the last three an a half years more than 400 users have produced about 1500 custom catalogs occupying 2TB in compressed format.

CosmoHub allows users to access value-added data, to load and explore pre-built datasets and to create their own custom datasets through a guided process. All those datasets can be interactively explored using an integrated visualization tool which includes 1D histogram and 2D heatmap plots. In our current implementation, online analysis of datasets of a billion objects can be done in less than 25 seconds. Finally, all those datasets can be downloaded in three different formats: CSV.BZ2, FITS and ASDF.
21
April 2017

LISA: Past, Present, and Future


Start: 12:00h
Speaker: Carlos Sopuerta
Place: Sala de Conferencies Alberto Lobo

The Laser Interferometer Space Antenna is a mission concept for a space-based gravitational-wave observatory that is very likely going  to be adopted by the European Space Agency for its future third L-class mission.  In this talk I will briefly go through the history of this mission, its main features…
Start: 12:00h
Speaker: Carlos Sopuerta
Place: Sala de Conferencies Alberto Lobo

The Laser Interferometer Space Antenna is a mission concept for a space-based gravitational-wave observatory that is very likely going  to be adopted by the European Space Agency for its future third L-class mission.  In this talk I will briefly go through the history of this mission, its main features and the powerful science program that can be carried out.  
07
April 2017

Science with the Upgraded SMA in the Next Decade


Start: 12:00h
Speaker: Ramprasad Rao (ASIAA / SMA Hawaii)
Place: Sala Alberto Lobo (ICE building, Campus UAB)

The Submillimeter Array (SMA) is in the process of upgrading its system -- both the front end receivers as well as the correlator over the next 3 years which should significantly improve on the existing sensitivity as well as spectral bandwidth. We expect that this upgrade will usher in a new era…
Start: 12:00h
Speaker: Ramprasad Rao (ASIAA / SMA Hawaii)
Place: Sala Alberto Lobo (ICE building, Campus UAB)

The Submillimeter Array (SMA) is in the process of upgrading its
system -- both the front end receivers as well as the correlator over
the next 3 years which should significantly improve on the existing
sensitivity as well as spectral bandwidth. We expect that this upgrade
will usher in a new era of discoveries in submillimeter astronomy in
Hawaii. In this brief talk, I will present an overview of the
instrument upgrades and focus on some of the key science cases.
31
March 2017

An introduction to cosmological simulations


Start: 12:00h
Speaker: Linda Blot (IEEC-CSIC)
Place: Sala Alberto Lobo

Numerical simulations have a very important role in cosmology, as they allow to study the gravitational interactions that shape the large scale structure of the Universe in regimes that are not accessible to analytical methods. In this talk I will describe the ingredients that go into a cosmological…
Start: 12:00h
Speaker: Linda Blot (IEEC-CSIC)
Place: Sala Alberto Lobo

Numerical simulations have a very important role in cosmology, as they allow to study the gravitational interactions that shape the large scale structure of the Universe in regimes that are not accessible to analytical methods. In this talk I will describe the ingredients that go into a cosmological simulation and the specific challenges that such simulations pose. Finally I will present a few applications for present-day cosmology.
24
March 2017

Understanding the first magnetar nebula


Start: 12:00h
Speaker: Diego F. Torres (Institute for Space Science (IEEC/CSIC))
Place: Barcelona

A wind nebula, generating extended and bright X-ray emission, was recently detected surrounding Swift 1834.9-0846. This is  the first magnetar for which such a wind nebula was found. Soon after this discovery, claims were made arguing that such a nebula could only be produced by a transfer of magnetic…
Start: 12:00h
Speaker: Diego F. Torres (Institute for Space Science (IEEC/CSIC))
Place: Barcelona

A wind nebula, generating extended and bright X-ray emission, was recently detected surrounding Swift 1834.9-0846. This is  the first magnetar for which such a wind nebula was found. Soon after this discovery, claims were made arguing that such a nebula could only be produced by a transfer of magnetic energy into particle acceleration, thus being different in nature to all others pulsar wind nebulae (PWNe) known. Here, we investigate whether there is a plausible scenario where the PWN can be sustained without the need of advocating for additional sources of energy other than rotational. We do this by using a detailed radiative and dynamical code that studies the evolution of the nebula and its particle population in time. We find new effects related to the reverberation processes in nebulae of pulsars of low spin-down power, the most important of which is the appearance of adiabatic heating being increasingly dominant over the escape of particles as reverberation goes by. We show that Swift 1834.9-0846's nebula can be explained as being rotationally-powered, as all other known PWNe are, if it is currently being compressed by the environment. The need of reverberation naturally explains why this is the only magnetar nebula detected, and provides estimates for Swift 1834.9-0846's age.
17
March 2017

Breaking the Habit - The peculiar 2016 eruption of the remarkable recurrent nova in M31


Start: 12:00h
Speaker: Martin Henze
Place: Sala de Conferencies Alberto Lobo

Since its discovery in 2008, the Andromeda galaxy nova M31N 2008-12a has been observed in eruption every single year. This makes it the most extreme object in the new class of Rapidly Recurring Novae (RRN) - objects which show repeated eruptions within a ten-year time span. Such frequent eruptions indicate…
Start: 12:00h
Speaker: Martin Henze
Place: Sala de Conferencies Alberto Lobo

Since its discovery in 2008, the Andromeda galaxy nova M31N 2008-12a has been observed in eruption every single year. This makes it the most extreme object in the new class of Rapidly Recurring Novae (RRN) - objects which show repeated eruptions within a ten-year time span. Such frequent eruptions indicate the presence of high mass accretion onto a white dwarf which is close to the Chandrasekhar mass limit, thereby making RRN promising candidates for the progenitors of type-Ia supernovae. The previous three eruptions of M31N 2008-12a have displayed remarkably homogeneous multi-wavelength properties. In contrast, the delayed 2016 eruption (in December last year) showed significant deviations from this pattern. In this talk, I will discuss the observational results and possible interpretations on the physics and evolution of the system.
10
March 2017

Accrete, accrete, accrete… Bang! (and repeat): The Remarkable Recurrent Novae


Start: 12:00h
Speaker: Matt Darnley (Liverpool John Moores University)
Place: Sala Alberto Lobo (ICE building, Campus UAB)

Classical Novae are powered by thermonuclear eruptions on the surface of accreting white dwarfs. By definition, Recurrent Novae are any such systems where two or more eruptions have been witnessed. The recurrents typically contain high-mass white dwarfs and are, as such, among the leading Type…
Start: 12:00h
Speaker: Matt Darnley (Liverpool John Moores University)
Place: Sala Alberto Lobo (ICE building, Campus UAB)

Classical Novae are powered by thermonuclear eruptions on the surface of accreting white dwarfs. By definition, Recurrent Novae are any such systems where two or more eruptions have been witnessed. The recurrents typically contain high-mass white dwarfs and are, as such, among the leading Type Ia Supernova progenitor candidates. In this talk I will present the results of the first extragalactic surveys for Recurrent Novae and their own progenitor systems – both of which had unexpected findings. I will also introduce a remarkable subset of recurrent novae — the ‘rapid recurrents’ with inter-eruption timescales shorter than a decade and discuss their potential connection with SNe Ia.
03
March 2017

Telescope Control Unit design for ARIEL mission


Start: 00:00h
Speaker: Carles Sierra Roig (Institut de Ciencies de l'Espai (CSIC-IEEC))
Place: Sala Alberto Lobo (ICE building, Campus UAB)

The Atmospheric Remote-sensing Infrared Exoplanet Large Survey (ARIEL) is one the three candidates for the next ESA medium class (M4) mission expected to be launched in 2026. This mission will be devoted to observing spectroscopically in the infrared a large population (500-1000) of known transiting…
Start: 00:00h
Speaker: Carles Sierra Roig (Institut de Ciencies de l'Espai (CSIC-IEEC))
Place: Sala Alberto Lobo (ICE building, Campus UAB)

The Atmospheric Remote-sensing Infrared Exoplanet Large Survey (ARIEL) is one the three candidates for the next ESA medium class (M4) mission expected to be launched in 2026. This mission will be devoted to observing spectroscopically in the infrared a large population (500-1000) of known transiting planets in our Galaxy, opening a new discovery space in the field of extra-solar planets and enabling the understanding of the physics and chemistry of these far away worlds. IEEC-CSIC (PI: Ignasi Ribas) is leading the Telescope Control Unit (TCU), a mission critical element of the Warm Front-End Electronics. In this talk I will present the work done in the TCU for the Phase A of ARIEL mission with a small mention of a prototype developed for my Final Degree Thesis based on TCU's architecture (advisors: Jose-Maria Gómez @IEEC-UB & Lluís Gesa @IEEC-CSIC). I will conclude the presentation with a summary of the last paper from Eagleworks Laboratories regarding the state of the art of the EM Drive, as I am planing to study it for the Final Master Thesis. 
24
February 2017

ICE 's Radiation Laboratory


Start: 12:00h
Speaker: José-Luis Gálvez Sánchez (Institut de Ciències de l'Espai (CSIC-IEEC))
Place: Sala Alberto Lobo (ICE building, Campus UAB)

As you probably know our institute run different laboratories which support and enhance the technology behind our scientific projects. It is mandatory that our laboratories are in good shape so that an excellent science can be achieved. One of these laboratories is the radiation laboratory (RadLab)…
Start: 12:00h
Speaker: José-Luis Gálvez Sánchez (Institut de Ciències de l'Espai (CSIC-IEEC))
Place: Sala Alberto Lobo (ICE building, Campus UAB)

As you probably know our institute run different laboratories which support and enhance the technology behind our scientific projects. It is mandatory that our laboratories are in good shape so that an excellent science can be achieved. One of these laboratories is the radiation laboratory (RadLab) which is a radioactive facility authorized by the Spanish Nuclear Safety Council (CSN). This talk introduces what a Radiation Laboratory means and describes the main activities undergone in the lab with radiation detectors in the field of nuclear and high energy astrophysics.
17
February 2017

LISA Pathfinder: one year in free-fall


Start: 12:00h
Speaker: Miquel Nofrarias Serra (Institut de Ciències de l'Espai (CSIC-IEEC))
Place: Sala Alberto Lobo (ICE building, Campus UAB)

After several years of intense technological research, during 2016 we’ve seen the start of Gravitational Wave Astronomy. On Feb. 11th 2016 Advanced LIGO announced the first detection of a gravitational wave signal from a black hole binary merge. Coincidentally, just a few days after (Feb.…
Start: 12:00h
Speaker: Miquel Nofrarias Serra (Institut de Ciències de l'Espai (CSIC-IEEC))
Place: Sala Alberto Lobo (ICE building, Campus UAB)

After several years of intense technological research, during 2016 we’ve seen the start of Gravitational Wave Astronomy. On Feb. 11th 2016 Advanced LIGO announced the first detection of a gravitational wave signal from a black hole binary merge. Coincidentally, just a few days after (Feb. 15th) LISA Pathfinder released for the first time one of its test masses and started operating in free fall, with the main objective of testing the required technology to build a future space-based observatory. LISA Pathfinder lifted off from French Guaiana in December 3rd 2015. After a cruise phase, it reached the Lagrange point 1 where it started, first, the commissioning phase and then the scientific operations. In this talk I will review this last year of operations, describing the daily operations scenario and the mission main scientific results so far.
Institute of Space Sciences (IEEC-CSIC)

Campus UAB, Carrer de Can Magrans, s/n
08193 Barcelona.
Phone: +34 93 737 9788
Email: ice@ice.csic.es
Website developed with RhinOS

Follow us


An institute of the Consejo Superior de Investigaciones Científicas

An institute of the Consejo Superior de Investigaciones Científicas
Affiliated with the Institut d'Estudis Espacials de Catalunya

Affiliated with the Institut d'Estudis Espacials de Catalunya