N. Webb

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Pulsars are born with subsecond spin periods and slow by electromagnetic braking for several tens of millions of years, when detectable radiation ceases. A second life can occur for neutron stars in binary systems. They can acquire mass and angular momentum from their companions, to be spun up to millisecond periods and begin radiating again. We searched(More)
We report the detection of gamma-ray emissions above 200 megaelectron volts at a significance level of 17sigma from the globular cluster 47 Tucanae, using data obtained with the Large Area Telescope onboard the Fermi Gamma-ray Space Telescope. Globular clusters are expected to emit gamma rays because of the large populations of millisecond pulsars that they(More)
  • A De Roeck, U Kruschwitz, P Neal, P Scott, S Steel, R Turner +1 other
  • 1998
The YPA project is building a system to make the information in classified directories more accessible. BT's Yellow Pages ®1 provides an example of a classified database with which this work would be useful. There are two reasons for doing this: (i) directories like Yellow Pages contain much useful but hard-to-access information, especially in the free text(More)
Eyetracking is now an almost standard offering from commercial HCI analysts. However, what are the best ways to exploit the strengths and minimise the weaknesses of this technique? This workshop aims to gather individuals who have an interest in using eyetracking for the evaluation and design of digital interfaces such as websites, games, iTV, mobile phones(More)
The Large Observatory For x-ray Timing (LOFT) was studied within ESA M3 Cosmic Vision framework and participated in the final downselection for a launch slot in 2022-2024. Thanks to the unprecedented combination of effective area and spectral resolution of its main instrument, LOFT will study the behaviour of matter under extreme conditions, such as the(More)
  • M Feroci, J W Den Herder, E Bozzo, D Barret, S Brandt, M Hernanz +494 others
  • 2016
Copyright and Moral Rights for the articles on this site are retained by the individual authors and/or other copyright owners. For more information on Open Research Online's data policy on reuse of materials please consult the policies page. ABSTRACT The Large Observatory For x-ray Timing (LOFT) was studied within ESA M3 Cosmic Vision framework and(More)
  • M Feroci, J W Den Herder, E Bozzo, D Barrett, S Brandt, M Hernanz +421 others
  • 2012
Copyright and Moral Rights for the articles on this site are retained by the individual authors and/or other copyright owners. For more information on Open Research Online's data policy on reuse of materials please consult the policies page. ABSTRACT The LOFT mission concept is one of four candidates selected by ESA for the M3 launch opportunity as Medium(More)
Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use. The MIT Faculty has made this article openly available. Please share how this access benefits you. Your story matters. ABSTRACT The LOFT mission concept is one of four candidates selected by ESA(More)