@article{5b576a272ed04b3fa542c80ec9b336d3,
title = "Beating the spin-down limit on gravitational wave emission from the Crab pulsar",
abstract = "We present direct upper limits on gravitational wave emission from the Crab pulsar using data from the first 9 months of the fifth science run of the Laser Interferometer Gravitational-wave Observatory (LIGO). These limits are based on two searches. In the first we assume that the gravitational wave emission follows the observed radio timing, giving an upper limit on gravitational wave emission that beats indirect limits inferred from the spin-down and braking index of the pulsar and the energetics of the nebula. In the second we allow for a small mismatch between the gravitational and radio signal frequencies and interpret our results in the context of two possible gravitational wave emission mechanisms.",
keywords = "Color figure, Gravitational waves - pulsars, Individual (crab pulsar) online material, Subject headings",
author = "{LIGO Scientific Collaboration} and B. Abbott and R. Abbott and R. Adhikari and P. Ajith and B. Allen and G. Allen and R. Amin and Anderson, {S. B.} and Anderson, {W. G.} and Arain, {M. A.} and M. Araya and H. Armandula and P. Armor and Y. Aso and S. Aston and P. Aufmuth and C. Aulbert and S. Babak and S. Ballmer and H. Bantilan and Barish, {B. C.} and C. Barker and D. Barker and B. Barr and P. Barriga and Barton, {M. A.} and M. Bastarrika and K. Bayer and J. Betzwieser and Beyersdorf, {P. T.} and Bilenko, {I. A.} and G. Billingsley and R. Biswas and E. Black and K. Blackburn and L. Blackburn and D. Blair and B. Bland and Bodiya, {T. P.} and L. Bogue and R. Bork and V. Boschi and S. Bose and Brady, {P. R.} and Braginsky, {V. B.} and Brau, {J. E.} and M. Brinkmann and A. Brooks and Brown, {D. A.} and G. Brunet and A. Bullington and A. Buonanno and O. Burmeister and Byer, {R. L.} and L. Cadonati and G. Cagnoli and Camp, {J. B.} and J. Cannizzo and K. Cannon and J. Cao and L. Cardenas and T. Casebolt and G. Castaldi and C. Cepeda and E. Chalkley and P. Charlton and S. Chatterji and S. Chelkowski and Y. Chen and N. Christensen and D. Clark and J. Clark and T. Cokelaer and R. Conte and D. Cook and T. Corbitt and D. Coyne and Creighton, {J. D.E.} and A. Cumming and L. Cunningham and Cutler, {R. M.} and J. Dalrymple and K. Danzmann and G. Davies and D. Debra and J. Degallaix and M. Degree and V. Dergachev and S. Desai and R. Desalvo and S. Dhurandhar and M. D{\'i}az and J. Dickson and A. Dietz and F. Donovan and Dooley, {K. L.} and Doomes, {E. E.} and Ver, {R. W.P.Dre} and I. Duke and Dumas, {J. C.} and Dupuis, {R. J.} and Dwyer, {J. G.} and C. Echols and A. Effler and P. Ehrens and E. Espinoza and T. Etzel and T. Evans and S. Fairhurst and Y. Fan and D. Fazi and H. Fehrmann and Fejer, {M. M.} and Finn, {L. S.} and K. Flasch and N. Fotopoulos and A. Freise and R. Frey and T. Fricke and P. Fritschel and Frolov, {V. V.} and M. Fyffe and J. Garofoli and I. Gholami and Giaime, {J. A.} and S. Giampanis and Giardina, {K. D.} and K. Goda and E. Goetz and L. Goggin and G. Gonz{\'a}lez and S. Gossler and R. Gouaty and A. Grant and S. Gras and C. Gray and M. Gray and Greenhalgh, {R. J.S.} and Gretarsson, {A. M.} and F. Grimaldi and R. Grosso and H. Grote and S. Grunewald and M. Guenther and Gustafson, {E. K.} and R. Gustafson and B. Hage and Hallam, {J. M.} and D. Hammer and C. Hanna and J. Hanson and J. Harms and G. Harry and E. Harstad and K. Hayama and T. Hayler and J. Heefner and Heng, {I. S.} and M. Hennessy and A. Heptonstall and M. Hewitson and S. Hild and E. Hirose and D. Hoak and D. Hosken and J. Hough and Huttner, {S. H.} and D. Ingram and M. Ito and A. Ivanov and B. Johnson and Johnson, {W. W.} and Jones, {D. I.} and G. Jones and R. Jones and L. Ju and P. Kalmus and V. Kalogera and S. Kamat and J. Kanner and D. Kasprzyk and E. Katsavounidis and K. Kawabe and S. Kawamura and F. Kawazoe and W. Kells and Keppel, {D. G.} and Khalili, {F. Ya} and R. Khan and E. Khazanov and C. Kim and P. King and Kissel, {J. S.} and S. Klimenko and K. Kokeyama and V. Kondrashov and Kopparapu, {R. K.} and D. Kozak and I. Kozhevatov and B. Krishnan and P. Kwee and Lam, {P. K.} and M. Landry and Lang, {M. M.} and B. Lantz and A. Lazzarini and M. Lei and N. Leindecker and V. Leonhardt and I. Leonor and K. Libbrecht and H. Lin and P. Lindquist and Lockerbie, {N. A.} and D. Lodhia and M. Lormand and P. Lu and M. Lubinski and A. Lucianetti and H. L{\"u}ck and B. Machenschalk and M. Macinnis and M. Mageswaran and K. Mailand and V. Mandic and S. M{\'a}rka and Z. M{\'a}rka and A. Markosyan and J. Markowitz and E. Maros and I. Martin and Martin, {R. M.} and Marx, {J. N.} and K. Mason and F. Matichard and L. Matone and Mcclelland, {D. E.} and T. Meier and J. Miller and J. Myers and Ottaway, {D. J.} and Schediwy, {S. W.} and Slagmolen, {B. J.J.} and K. Somiya and R. Taylor and R. Weiss and Whitcomb, {S. E.} and W. Wu and Z. Yan and C. Zhao",
year = "2008",
doi = "10.1086/591526",
language = "English",
volume = "683",
pages = "L45--L49",
journal = "The Astrophysical Journal",
issn = "0004-637X",
publisher = "IOP Publishing",
number = "1 PART 2",
}