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Content archived on 2024-06-18

Fundamental Physics with the Spin of Compact Objects

Objective

Modern physics presents a number of challenges about the behaviour of the four fundamental forces of Nature which are beyond current technological capabilities of Earth-based labs. The existence of gravitational waves, their emission processes and the determination of the true ground state of ultra-dense matter are fascinating problems that can only be addressed with exceptional astrophysical laboratories like compact objects. In particular neutron stars and black holes, provide a unique opportunity to advance our understanding of these fundamental physics problems. The spin of neutron stars is perhaps the best observable that carries a large amount of information on the behaviour of matter in curved space-times and at ultra-high densities. Indeed the efficiency of gravitational wave emission mechanisms and the binding energy of sub-nuclear particles do depend on the spin period of neutron stars. In this project I address the problem of the existence of neutron stars in X-ray binaries with spin periods of less than 1 millisecond and propose to perform the deepest pulse search ever done on neutron star low mass X-ray binaries. These sub-millisecond objects, if found, are spinning sufficiently fast that strong model-independent constraints can be placed on the equation of state of ultra-dense matter and on the efficiency of gravitational wave emission mechanisms. I discuss then a possible new way to determine the spin of compact objects through a yet poorly explored quantum property of light. Finally, I propose to constrain gravitational wave emission mechanisms based on an enlarged sample size of neutron star spin frequencies which might help to pinpoint the best neutron star candidates for future direct gravitational wave searches.

Fields of science (EuroSciVoc)

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Topic(s)

Calls for proposals are divided into topics. A topic defines a specific subject or area for which applicants can submit proposals. The description of a topic comprises its specific scope and the expected impact of the funded project.

Call for proposal

Procedure for inviting applicants to submit project proposals, with the aim of receiving EU funding.

FP7-PEOPLE-2012-IOF
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Funding Scheme

Funding scheme (or “Type of Action”) inside a programme with common features. It specifies: the scope of what is funded; the reimbursement rate; specific evaluation criteria to qualify for funding; and the use of simplified forms of costs like lump sums.

MC-IOF - International Outgoing Fellowships (IOF)

Coordinator

UNIVERSITY OF SOUTHAMPTON
EU contribution
€ 294 693,00
Address
Highfield
SO17 1BJ SOUTHAMPTON
United Kingdom

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Region
South East (England) Hampshire and Isle of Wight Southampton
Activity type
Higher or Secondary Education Establishments
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Total cost

The total costs incurred by this organisation to participate in the project, including direct and indirect costs. This amount is a subset of the overall project budget.

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