Descripción del proyecto
Tras el rastro de las ondas gravitacionales continuas
Las ondas gravitacionales (OG), predichas por Albert Einstein en 1916, son perturbaciones en el espacio-tiempo provocadas por procesos de alta energía en el universo y se detectaron por primera vez en 2015. Las más intensas se deben a acontecimientos catastróficos como la colisión de estrellas de neutrones. Todavía no se han detectado OG continuas generadas por estrellas de neutrones giratorias y deambulantes que no sean esferas perfectas. Con el apoyo de las Acciones Marie Skłodowska-Curie, el proyecto BINSKY se propone lograrlo por vez primera utilizando complejos estudios de todo el cielo para encontrar señales de ondas continuas procedentes de estrellas de neutrones en sistemas binarios.
Objetivo
Gravitational waves from compact binary coalescences are now routinely detected, but other types of gravitational waves await to be discovered. Rotating neutron stars with an asymmetry around their rotating axis give rise to continuous waves, which differ from the already detected gravitational waves in their long duration (present during the whole observing runs) and expected weaker amplitude. Although many searches for continuous waves have been carried out, no detection has been achieved yet. The first detection of a continuous wave could be the next major discovery in gravitational-wave astronomy, probing the behaviour of matter at extreme conditions and the equation of state at densities above nuclear density that cannot be reached in any laboratory, the geometrical shape of neutron stars, and fundamental physics with tests of general relativity.
This action aims to make the first detection of a continuous wave signal, searching for signals from unknown neutron stars in binary systems. More than half of the known neutron stars in the sensitive frequency region of the gravitational-wave detectors are part of binary systems. Neutron stars in binary systems may be more likely to have the asymmetries needed to emit detectable continuous waves, since they might be accreting matter from their companions which provides a natural asymmetry. This increases the chances of detecting a continuous wave signal, making all-sky searches of continuous waves from binary systems one of the most promising scenarios.
All-sky surveys for continuous wave signals from neutron stars in binary systems are probably the most challenging search in gravitational-wave science. For this reason, they have been carried out seldom and at lower sensitivity compared to surveys from signals from isolated neutron stars, and with this project we want to address this deficiency. This project will be carried out at the Albert Einstein Institute in Hannover, within the research group lead by M.A. Papa.
Ámbito científico (EuroSciVoc)
CORDIS clasifica los proyectos con EuroSciVoc, una taxonomía plurilingüe de ámbitos científicos, mediante un proceso semiautomático basado en técnicas de procesamiento del lenguaje natural.
CORDIS clasifica los proyectos con EuroSciVoc, una taxonomía plurilingüe de ámbitos científicos, mediante un proceso semiautomático basado en técnicas de procesamiento del lenguaje natural.
- ciencias naturalesciencias físicasmecánica relativista
- ciencias naturalesciencias físicasastronomíaastronomía observacionalondas gravitatorias
- ciencias naturalesciencias físicasastronomíaastronomía estelarestrella de neutrones
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Programa(s)
Régimen de financiación
MSCA-IF - Marie Skłodowska-Curie Individual Fellowships (IF)Coordinador
80539 Munchen
Alemania