TY  - CHAP
U1  - Konferenzveröffentlichung
A1  - Eatough, R. P.
A1  - Kramer, M.
A1  - Klein, B.
A1  - Karuppusamy, R.
A1  - Champion, D. J.
A1  - Freire, P. C. C.
A1  - Wex, N.
A1  - Liu, K.
T1  - Can we see pulsars around Sgr A⋆? The latest searches with the Effelsberg telescope
T2  - van Leeuwen (Ed.): Neutron Stars and Pulsars: Challenges and Opportunities after 80 years. Proceedings of the 291st Symposium of the International Astronomical Union, Beijing, China, 20-24 August 2012
N2  - Radio pulsars in relativistic binary systems are unique tools to study the curved space-time around massive compact objects. The discovery of a pulsar closely orbiting the super-massive black hole at the centre of our Galaxy, Sgr A⋆, would provide a superb test-bed for gravitational physics. To date, the absence of any radio pulsar discoveries within a few arc minutes of Sgr A⋆ has been explained by one principal factor: extreme scattering of radio waves caused by inhomogeneities in the ionized component of the interstellar medium in the central 100 pc around Sgr A⋆. Scattering, which causes temporal broadening of pulses, can only be mitigated by observing at higher frequencies. Here we describe recent searches of the Galactic centre region performed at a frequency of 18.95 GHz with the Effelsberg radio telescope.
KW  - Sgr A⋆
KW  - Pulsars
SN  - 978-1-107-03380-1
SB  - 978-1-107-03380-1
U6  - https://doi.org/10.1017/S1743921312024209
DO  - https://doi.org/10.1017/S1743921312024209
SP  - 382
EP  - 384
PB  - Cambridge University Press
ER  -