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Content archived on 2024-06-18

Theory of Gamma-Ray Bursts and relativistic collisionless shocks

Objective

Gamma-ray bursts (GRBs) are the most violent of the known cosmic explosions. They are bright enough to outshine the rest of the gamma-ray universe and can be seen out to the distance of the first generation of stars. The burst of gamma-rays that marks the GRB, which last seconds, is followed by an afterglow - a long-lasting X-ray, optical, and radio emission. GRB exploration was very active during the last two decades, mostly thanks to a continuous observational effort. The theoretical analysis of the observations leads to the understanding that the sources of the prompt and afterglow emission are relativistic jets which are powered by a compact engine. Today we know about two different types of GRBs – long GRBs which are generated by the collapse of a young massive star and short GRBs for which the origin is not confirmed yet. Future planed observing missions (e.g. GLAST) promise that GRBs will remain a focus of astrophysical research in the coming years. As a member of the astrophysics research group in the Tel-Aviv University I plan to address two key topics that I consider as crucial in the way to reveal the physics of GRBs. The first is the physics of relativistic collisionless shocks in unmagnetized plasma and in particular the magnetic field generation in such shocks, as inferred from the observations. In addition for its fundamental physical interest, understanding this topic is a necessary ingredient in order to properly interpret GRB observations. The second topic that I will study is the origin of short GRBs. This is one of the most tantalizing open questions today in high energy astrophysics and its resolution may bear direct implications to the search for gravitational waves. My research objectives will be achieved by a combination of analytical and numerical research, leveraging on the experience I gained during my research in Caltech and the long standing collaborations with theoreticians and observers that I developed while researching in the US.

Fields of science (EuroSciVoc)

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Keywords

Project’s keywords as indicated by the project coordinator. Not to be confused with the EuroSciVoc taxonomy (Fields of science)

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

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FP7-PEOPLE-2007-4-3-IRG
See other projects for this call

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-IRG - International Re-integration Grants (IRG)

Coordinator

TEL AVIV UNIVERSITY
EU contribution
€ 100 000,00
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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