The Dublin Institute for Advanced Studies (DIAS) (Irish: Institiúid Ard-Léinn Bhaile Átha Cliath) was established in 1940 by the then Taoiseach, Éamon de Valera under the Institute for Advanced Studies Act, 1940 in Dublin, Ireland. The Institute consists of 3 schools: the School of Theoretical Physics, the School of Cosmic Physics and the School of Celtic studies. The directors of these schools are currently Professor Werner Nahm, Professor Luke Drury and Professor Liam Breatnach. The Institute under the act is empowered to "train students in methods of advanced research" but does not itself award degrees; graduate students working under the supervision of Institute researchers can, with the agreement of the governing board of the appropriate school, be registered for a higher degree in any university worldwide.
The Institute was initially located at 64 and 65 Merrion Square and had two schools - the School of Theoretical Physics and the School of Celtic Studies - to which the School of Cosmic Physics was added in 1947. Currently the Institute has its schools located at three premises on the Southside of Dublin at 10 Burlington Road, 31 Fitzwilliam Place and 5 Merrion Square. It also maintains a presence at Dunsink Observatory in north County Dublin.
Shortly after becoming Taoiseach, Éamon de Valera investigated the possibility of setting up an institute of higher learning. Being of mathematical background, de Valera was aware of the decline of the Dunsink Observatory, where Sir William Rowan Hamilton (regarded as Ireland's most influential mathematician) had held the position of Royal Astronomer of Ireland. Following meetings with prominent academics in the fields of mathematics and astronomy, he came to the conclusion that astronomy at Dunsink should be revived and an institute for higher learning should be established.