101 results on '"Stairs, I."'
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2. The black widow pulsar J1641+8049 in the optical, radio, and X-rays.
- Author
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Kirichenko, A Yu, Zharikov, S V, Karpova, A V, Fonseca, E, Zyuzin, D A, Shibanov, Yu A, López, E A, Gilfanov, M R, Cabrera-Lavers, A, Geier, S, Dong, F A, Good, D C, McKee, J W, Meyers, B W, Stairs, I H, McLaughlin, M A, and Swiggum, J K
- Subjects
PULSARS ,X-rays ,PULSE modulation ,NEUTRON stars - Abstract
PSR J1641+8049 is a 2 ms black widow pulsar with the 2.2 h orbital period detected in the radio and γ-rays. We performed new phase-resolved multiband photometry of PSR J1641+8049 using the OSIRIS instrument at the Gran Telescopio Canarias. The obtained data were analysed together with the new radio-timing observations from the Canadian Hydrogen Intensity Mapping Experiment (CHIME), the X-ray data from the Spectrum-RG/ eROSITA all-sky survey, and all available optical photometric observations. An updated timing solution based on CHIME data is presented, which accounts for secular and periodic modulations in pulse dispersion. The system parameters obtained through the light-curve analysis, including the distance to the source 4.6–4.8 kpc and the orbital inclination 56–59 deg, are found to be consistent with previous studies. However, the optical flux of the source at the maximum brightness phase faded by a factor of ∼2 as compared to previous observations. Nevertheless, the face of the J1641+8049 companion remains one of the most heated (8000–9500 K) by a pulsar among the known black widow pulsars. We also report a new estimation on the pulsar proper motion of ≈2 mas yr
−1 , which yields a spin-down luminosity of ≈4.87 × 1034 erg s−1 and a corresponding heating efficiency of the companion by the pulsar of 0.3–0.7. The pulsar was not detected in X-rays implying its X-ray-luminosity was |$\lesssim$| 3 × 1031 erg s−1 at the date of observations. [ABSTRACT FROM AUTHOR]- Published
- 2024
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3. A MeerKAT view of the double pulsar eclipses: Geodetic precession of pulsar B and system geometry.
- Author
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Lower, M. E., Kramer, M., Shannon, R. M., Breton, R. P., Wex, N., Johnston, S., Bailes, M., Buchner, S., Hu, H., Venkatraman Krishnan, V., Blackmon, V. A., Camilo, F., Champion, D. J., Freire, P. C. C., Geyer, M., Karastergiou, A., van Leeuwen, J., McLaughlin, M. A., Reardon, D. J., and Stairs, I. H.
- Subjects
PULSARS ,NEUTRON stars ,MEERKAT ,LIGHT curves ,GENERAL relativity (Physics) - Abstract
The double pulsar system, PSR J0737−3039A/B, consists of two neutron stars bound together in a highly relativistic orbit that is viewed nearly edge-on from the Earth. This alignment results in brief radio eclipses of the fast-rotating pulsar A when it passes behind the toroidal magnetosphere of the slow-rotating pulsar B. The morphology of these eclipses is strongly dependent on the geometric orientation and rotation phase of pulsar B, and their time evolution can be used to constrain the geodetic precession rate of the pulsar. We demonstrate a Bayesian inference framework for modelling high-sensitivity eclipse light curves obtained with MeerKAT between 2019 and 2023. Using a hierarchical inference approach, we obtained a precession rate of Ω
SO B = 5.16°−0.34° +0.32° yr−1 (68% confidence intervals) for pulsar B, consistent with predictions from general relativity to a relative uncertainty of 6.5%. This updated measurement provides a 6.1% test of relativistic spin-orbit coupling in the strong-field regime. We show that a simultaneous fit to all of our observed eclipses can in principle return a ∼1.5% test of spin-orbit coupling. However, systematic effects introduced by the current geometric orientation of pulsar B along with inconsistencies between the observed and predicted eclipse light curves result in difficult to quantify uncertainties when using this approach. Assuming the validity of general relativity, we definitively show that the spin axis of pulsar B is misaligned from the total angular momentum vector by 40.6° ±0.1° and that the orbit of the system is inclined by approximately 90.5° from the direction of our line of sight. Our measured geometry for pulsar B suggests the largely empty emission cone contains an elongated horseshoe-shaped beam centred on the magnetic axis, and that it may not be re-detected as a radio pulsar until early 2035. [ABSTRACT FROM AUTHOR]- Published
- 2024
- Full Text
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4. Narrowband Searches for Continuous and Long-duration Transient Gravitational Waves from Known Pulsars in the LIGO-Virgo Third Observing Run
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Abbott, R., Abbott, T. D., Acernese, F., Ackley, K., Adams, C., Adhikari, N., Adhikari, R. X., Adya, V. B., Affeldt, C., Agarwal, D., Agathos, M., Agatsuma, K., Aggarwal, N., Aguiar, O. D., Aiello, L., Ain, A., Ajith, P., Akutsu, T., Albanesi, S., Allocca, A., Altin, P. A., Amato, A., Ananyeva, A., Anderson, S. B., Anderson, W. G., Ando, M., Andrade, T., Andres, N., Angelova, V, Ansoldi, S., Antelis, J. M., Antier, S., Appert, S., Arai, Koji, Arai, Koya, Arai, Y., Araki, S., Araya, A., Araya, M. C., Areeda, J. S., Arene, M., Aritomi, N., Arnaud, N., Aronson, S. M., Arun, K. G., Asada, H., Asali, Y., Ashton, G., Aso, Y., Assiduo, M., Aston, S. M., Astone, P., Aubin, F., Austin, C., Babak, S., Badaracco, F., Bader, M. K. M., Badger, C., Bae, S., Bae, Y., Baer, A. M., Bagnasco, S., Bai, Y., Bailes, M., Baiotti, L., Baird, J., Bajpai, R., Ball, M., Ballardin, G., Ballmer, S. W., Balsamo, A., Baltus, G., Banagiri, S., Bankar, D., Barayoga, J. C., Barbieri, C., Barish, B. C., Barker, D., Barneo, P., Barone, F., Barr, B., Barsotti, L., Barsuglia, M., Barta, D., Bartlett, J., Barton, M. A., Bartos, I, Bassiri, R., Basti, A., Bawaj, M., Bayley, J. C., Baylor, A. C., Bazzan, M., Becsy, B., Bedakihale, V. M., Bejger, M., Belahcene, I, Benedetto, V, Beniwal, D., Bennett, T. F., Bentley, J. D., Benyaala, M., Bergamin, F., Berger, B. K., Bernuzzi, S., Bersanetti, D., Bertolini, A., Betzwieser, J., Beveridge, D., Are, R., Bhardwaj, U., Bhattacharjee, D., Bhaumik, S., Bilenko, I. A., Billingsley, G., Bini, S., Birney, R., Birnholtz, O., Biscans, S., Bischi, M., Biscoveanu, S., Bisht, A., Biswas, B., Bitossi, M., Bizouard, M-A, Blackburn, J. K., Blair, C. D., Blair, D. G., Blair, R. M., Bobba, F., Bode, N., Boer, M., Bogaert, G., Boldrini, M., Bonavena, L. D., Bondu, F., Bonilla, E., Bonn, Booker, P., Boom, B. A., Bork, R., Boschi, V, Bose, N., Bose, S., Bossilkov, V, Boudart, V, Bouffanais, Y., Bozzi, A., Bradaschia, C., Brady, P. R., Bramley, A., Branch, A., Branchesi, M., Brau, J. E., Breschi, M., Briant, T., Briggs, J. H., Brillet, A., Brinkmann, M., Brockill, P., Brooks, A. F., Brooks, J., Brown, D. D., Brunett, S., Bruno, G., Bruntz, R., Bryant, J., Bulik, T., Bulten, H. J., Buonanno, A., Buscicchio, R., Buskulic, D., Buy, C., Byer, R. L., Cadonati, L., Cagnoli, G., Cahillane, C., Calderon Bustillo, J., Callaghan, J. D., Callister, T. A., Calloni, E., Cameron, J., Camp, J. B., Canepa, M., Canevarolo, S., Cannavacciuolo, M., Cannon, K. C., Cao, H., Cao, Z., Capocasa, E., Capote, E., Carapella, G., Carbognani, F., Carlin, J. B., Carney, M. F., Carpinelli, M., Carrillo, G., Carullo, G., Carver, T. L., Diaz, J. Casanueva, Casentini, C., Castaldi, G., Caudill, S., Cavaglia, M., Cavalier, F., Cavalieri, R., Ceasar, M., Cella, G., Cerda-Duran, P., Cesarini, E., Chaibi, W., Chakravarti, K., Subrahmanya, S. Chalathadka, Champion, E., Chan, C-H, Chan, C., Chan, C. L., Chan, K., Chan, M., Ra, K., Chanial, P., Chao, S., Charlton, P., Chase, E. A., Chass, e-Mottin, E., Chatterjee, C., Chatterjee, Debarati, Chatterjee, Deep, Chaturvedi, M., Chaty, S., Chen, C., Chen, H. Y., Chen, J., Chen, K., Chen, X., Chen, Y-B, Chen, Y-R, Chen, Z., Cheng, H., Cheong, C. K., Cheung, H. Y., Chia, H. Y., Chiadini, F., Chiang, C-Y, Chiarini, G., Chierici, R., Chincarini, A., Chiofalo, M. L., Chiummo, A., Cho, G., Cho, H. S., Choudhary, R. K., Choudhary, S., Christensen, N., Chu, H., Chu, Q., Chu, Y-K, Chua, S., Chung, K. W., Ciani, G., Ciecielag, P., Cifaldi, M., Ciobanu, A. A., Ciolfi, R., Cipriano, F., Cirone, A., Clara, F., Clark, E. N., Clark, J. A., Clarke, L., Clearwater, P., Clesse, S., Cleva, F., Coccia, E., Codazzo, E., Cohadon, P-F, Cohen, D. E., Cohen, L., Colleoni, M., Collette, C. G., Colombo, A., Colpi, M., Compton, C. M., Constancio, J, R., Conti, L., Cooper, S. J., Corban, P., Corbitt, T. R., Cordero-Carrion, I, Corezzi, S., Corley, K. R., Cornish, N., Corre, D., Corsi, A., Cortese, S., Costa, C. A., Cotesta, R., Coughlin, M. W., Coulon, J-P, Countryman, S. T., Cousins, B., Couvares, P., Coward, D. M., Cowart, M. J., Coyne, D. C., Coyne, R., Creighton, J. D. E., Creighton, T. D., Criswell, A. W., Croquette, M., Crowder, S. G., Cudell, J. R., Cullen, T. J., Cumming, A., Cummings, R., Cunningham, L., Cuoco, E., Dabadie, P., Dal Canton, T., Dall'Osso, S., Dalya, G., Dana, A., Daneshgaranbajastani, L. M., Danilishin, S., Danzmann, K., Darsow-Fromm, C., Dasgupta, A., Datrier, L. E. H., Datta, S., Dattilo, V, Dave, I, Davier, M., Davies, G. S., Davis, D., Davis, M. C., Daw, E. J., Dean, R., Debra, D., Deenadayalan, M., Degallaix, J., De Laurentis, M., Deleglise, S., Del Favero, V, De Lillo, F., De Lillo, N., Del Pozzo, W., Demarchi, L. M., De Matteis, F., Demos, N., Dent, T., Depasse, A., De Pietri, R., De Rosa, R., De Rossi, C., Desalvo, R., De Simone, R., Dhur, Har, S., Diaz, M. C., Diaz-Ortiz, Didio, N. A., Dietrich, T., Di Fiore, L., Di Fronzo, C., Di Giorgio, C., Di Giovanni, F., Di Giovanni, M., Di Girolamo, T., Di Lieto, A., Ding, B., Di Pace, S., Di Palma, I, Di Renzo, F., Divakarla, A. K., Dmitriev, A., Doctor, Z., Donovan, F., Dooley, K. L., Doravari, S., Dorrington, I, Drago, M., Driggers, J. C., Drori, Y., Ducoin, J-G, Dupej, P., Durante, O., Duverne, P-A, Dwyer, S. E., Eassa, C., Easter, P. J., Ebersold, M., Eckhardt, T., Eddolls, G., Edelman, B., Edo, T. B., Edy, O., Effler, A., Eguchi, S., Eichholz, J., Eikenberry, S. S., Eisenmann, M., Eisenstein, R. A., Ejlli, A., Engelby, E., Enomoto, Y., Errico, L., Essick, R. C., Estelles, H., Estevez, D., Etienne, Z., Etzel, T., Evans, M., Evans, T. M., Ewing, B. E., Fafone, V, Fair, H., Fairhurst, S., Farah, A. M., Farinon, S., Farr, B., Farr, W. M., Farrow, N. W., Fauchon-Jones, E. J., Favaro, G., Favata, M., Fays, M., Fazio, M., Feicht, J., Fejer, M. M., Fenyvesi, E., Ferguson, D. L., Fern, ez-Galiana, A., Ferrante, I, Ferreira, T. A., Fidecaro, F., Figura, P., Fiori, I, Fishbach, M., Fisher, R. P., Fittipaldi, R., Fiumara, V, Flaminio, R., Floden, E., Fong, H., Font, J. A., Fornal, B., Forsyth, P. W. F., Franke, A., Frasca, S., Frasconi, F., Frederick, C., Freed, J. P., Frei, Z., Freise, A., Frey, R., Fritschel, P., Frolov, V. V., Fronze, G. G., Fujii, Y., Fujikawa, Y., Fukunaga, M., Fukushima, M., Fulda, P., Fyffe, M., Gabbard, H. A., Gadre, B. U., Gair, J. R., Gais, J., Galaudage, S., Gamba, R., Ganapathy, D., Ganguly, A., Gao, D., Gaonkar, S. G., Garaventa, B., Garcia-Nunez, C., Garcia-Quiros, C., Garufi, F., Gateley, B., Gaudio, S., Gayathri, V, G-G, Ge, Gemme, G., Gennai, A., George, J., Gerberding, O., Gergely, L., Gewecke, P., Ghonge, S., Ghosh, Abhirup, Ghosh, Archisman, Ghosh, Shaon, Ghosh, Shrobana, Giacomazzo, B., Giacoppo, L., Giaime, J. A., Giardina, K. D., Gibson, D. R., Gier, C., Giesler, M., Giri, P., Gissi, F., Glanzer, J., Gleckl, A. E., Godwin, P., Goetz, E., Goetz, R., Gohlke, N., Goncharov, B., Gonzalez, G., Gopakumar, A., Gosselin, M., Gouaty, R., Gould, D. W., Grace, B., Grado, A., Granata, M., Granata, V, Grant, A., Gras, S., Grassia, P., Gray, C., Gray, R., Greco, G., Green, A. C., Green, R., Gretarsson, A. M., Gretarsson, E. M., Griffith, D., Griffiths, W., Griggs, H. L., Grignani, G., Grimaldi, A., Grimm, S. J., Grote, H., Grunewald, S., Gruning, P., Guerra, D., Guidi, G. M., Guimaraes, A. R., Guixe, G., Gulati, H. K., Guo, H-K, Guo, Y., Gupta, Anchal, Gupta, Anuradha, Gupta, P., Gustafson, E. K., Gustafson, R., Guzman, F., Ha, S., Haegel, L., Hagiwara, A., Haino, S., Halim, O., Hall, E. D., Hamilton, E. Z., Hammond, G., Han, W-B, Haney, M., Hanks, J., Hanna, C., Hannam, M. D., Hannuksela, O., Hansen, H., Hansen, T. J., Hanson, J., Harder, T., Hardwick, T., Haris, K., Harms, J., Harry, G. M., Harry, I. W., Hartwig, D., Hasegawa, K., Haskell, B., Hasskew, R. K., Haster, C-J, Hattori, K., Haughian, K., Hayakawa, H., Hayama, K., Hayes, F. J., Healy, J., Heidmann, A., Heidt, A., Heintze, M. C., Heinze, J., Heinzel, J., Heitmann, H., Hellman, F., Hello, P., Helmling-Cornell, A. F., Hemming, G., Hendry, M., Heng, I. S., Hennes, E., Hennig, J., Hennig, M. H., Hern, A. G., Ez, Vivanco, F. Hern, Heurs, M., Hild, S., Hill, P., Himemoto, Y., Hines, A. S., Hiranuma, Y., Hirata, N., Hirose, E., W. C. G., Ho, Hochheim, S., Hofman, D., Hohmann, J. N., Holcomb, D. G., Holl, N. A., Hollows, I. J., Holmes, Z. J., Holt, K., Holz, D. E., Hong, Z., Hopkins, P., Hough, J., Hourihane, S., Howell, E. J., Hoy, C. G., Hoyl, Hreibi, A., Hsieh, B-H, Hsu, Y., Huang, G-Z, Huang, H-Y, Huang, P., Huang, Y-C, Huang, Y-J, Huang, Y., Hubner, M. T., Huddart, A. D., Hughey, B., Hui, D. C. Y., Hui, V, Husa, S., Huttner, S. H., Huxford, R., Huynh-Dinh, T., Ide, S., Idzkowski, B., Iess, A., Ikenoue, B., Imam, S., Inayoshi, K., Ingram, C., Inoue, Y., Ioka, K., Isi, M., Isleif, K., Ito, K., Itoh, Y., Iyer, B. R., Izumi, K., Jaberianhamedan, V, Jacqmin, T., Jadhav, S. J., Jadhav, S. P., James, A. L., Jan, A. Z., Jani, K., Janquart, J., Janssens, K., Janthalur, N. N., Jaranowski, P., Jariwala, D., Jaume, R., Jenkins, A. C., Jenner, K., Jeon, C., Jeunon, M., Jia, W., Jin, H-B, Johns, G. R., Jones, A. W., Jones, I, Jones, J. D., Jones, P., Jones, R., Jonker, R. J. G., Ju, L., Jung, P., Jung, K., Junker, J., Juste, V, Kaihotsu, K., Kajita, T., Kakizaki, M., Kalaghatgi, Kalogera, V, Kamai, B., Kamiizumi, M., K, A, N., Hasamy, S., Kang, G., Kanner, J. B., Kao, Y., Kapadia, S. J., Kapasi, D. P., Karat, S., Karathanasis, C., Karki, S., Kashyap, R., Kasprzack, M., Kastaun, W., Katsanevas, S., Katsavounidis, E., Katzman, W., Kaur, T., Kawabe, K., Kawaguchi, K., Kawai, N., Kawasaki, T., Kefelian, F., Keitel, D., Key, J. S., Khadka, S., Khalili, F. Y., Khan, S., Khazanov, E. A., Khetan, N., Khursheed, M., Kijbunchoo, N., Kim, C., Kim, J. C., Kim, J., Kim, K., Kim, W. S., Kim, Y-M, Kimball, C., Kimura, N., Kinley-Hanlon, M., Kirchhoff, R., Kissel, J. S., Kita, N., Kitazawa, H., Kleybolte, L., Klimenko, S., Knee, A. M., Knowles, T. D., Knyazev, E., Koch, P., Koekoek, G., Kojima, Y., Kokeyama, K., Koley, S., Kolitsidou, P., Kolstein, M., Komori, K., Kondrashov, V, Kong, A. K. H., Kontos, A., Koper, N., Korobko, M., Kotake, K., Kovalam, M., Kozak, D. B., Kozakai, C., Kozu, R., Kringel, V, Krishnendu, Krolak, A., Kuehn, G., Kuei, F., Kuijer, P., Kumar, A., Kumar, P., Kumar, Rahul, Kumar, Rakesh, Kume, J., Kuns, K., Kuo, C., Kuo, H-S, Kuromiya, Y., Kuroyanagi, S., Kusayanagi, K., Kuwahara, S., Kwak, K., Lagabbe, P., Laghi, D., Lal, E, E., Lam, T. L., Lamberts, A., L, Ry, M., Lane, B. B., Lang, R. N., Lange, J., Lantz, B., La Rosa, I, Lartaux-Vollard, A., Lasky, P. D., Laxen, M., Lazzarini, A., Lazzaro, C., Leaci, P., Leavey, S., Lecoeuche, Y. K., Lee, H. K., Lee, H. M., Lee, H. W., Lee, J., Lee, K., Lee, R., Lehmann, J., Lemaitre, A., Leonardi, M., Leroy, N., Letendre, N., Levesque, C., Levin, Y., Leviton, J. N., Leyde, K., A. K. Y., Li, Li, B., Li, J., K. L., Li, T. G. F., Li, Li, X., Lin, C-Y, Lin, F-K, Lin, F-L, Lin, H. L., Lin, L. C-C, Linde, F., Linker, S. D., Linley, J. N., Littenberg, T. B., Liu, G. C., Liu, J., Liu, K., Liu, X., Llamas, F., Llorens-Monteagudo, M., R. K. L., Lo, Lockwood, A., London, L. T., Longo, A., Lopez, D., Portilla, M. Lopez, Lorenzini, M., Loriette, V, Lorm, Losurdo, G., Lott, T. P., Lough, J. D., Lousto, C. O., Lovelace, G., Lucaccioni, J. F., Luck, H., Lumaca, D., Lundgren, A. P., Luo, L-W, Lynam, J. E., Macas, R., Macinnis, M., Macleod, D. M., Macmillan, I. A. O., Macquet, A., I. Magana, Ez, Magazzu, C., Magee, R. M., Maggiore, R., Magnozzi, M., Mahesh, S., Majorana, E., Makarem, C., Maksimovic, I, Maliakal, S., Malik, A., Man, N., M, Ic, V, Mangano, V, Mango, J. L., Mansell, G. L., Manske, M., Mantovani, M., Mapelli, M., Marchesoni, F., Marchio, M., Marion, F., Mark, Z., Marka, S., Marka, Z., Markakis, C., Markosyan, A. S., Markowitz, A., Maros, E., Marquina, A., Marsat, S., Martelli, F., Martin, I. W., Martin, R. M., Martinez, M., Martinez, V. A., Martinez, V, Martinovic, K., Martynov, Marx, E. J., Masalehdan, H., Mason, K., Massera, E., Masserot, A., Massinger, T. J., Masso-Reid, M., Mastrogiovanni, S., Matas, A., Mateu-Lucena, M., Matichard, F., Matiushechkina, M., Mavalvala, N., Mccann, J. J., Mccarthy, R., Mcclell, D. E., Mcclincy, P. K., Mccormick, S., Mcculler, L., Mcghee, Mcguire, S. C., Mcisaac, C., Mciver, J., Mcrae, T., Mcwilliams, S. T., Meacher, D., Mehmet, M., Mehta, A. K., Meijer, Q., Melatos, A., Melchor, D. A., Mendell, G., Menendez-Vazquez, A., Menoni, C. S., Mercer, R. A., Mereni, L., Merfeld, K., Merilh, E. L., Merritt, J. D., Merzougui, M., Meshkov, S., Messenger, C., Messick, C., Meyers, P. M., Meylahn, F., Mhaske, A., Miani, A., Miao, H., Michaloliakos, I, Michel, C., Michimura, Y., Middleton, H., Milano, L., Miller, A. L., Miller, A., Miller, B., Millhouse, M., Mills, J. C., Milotti, E., Minazzoli, O., Minenkov, Y., Mio, N., Mir, Ll M., Miravet-Tenes, M., Mishra, C., Mishra, T., Mistry, T., Mitra, S., Mitrofanov, V. P., Mitselmakher, G., Mittleman, R., Miyakawa, O., Miyamoto, A., Miyazaki, Y., Miyo, K., Miyoki, S., Geoffrey, Mo, Modafferi, L. M., Moguel, E., Mogushi, K., Mohapatra, S. R. P., Mohite, S. R., Molina, I, Molina-Ruiz, M., Mondin, M., Montani, M., Moore, C. J., Moragues, J., Moraru, D., Morawski, F., More, A., Moreno, C., Moreno, G., Mori, Y., Morisaki, S., Moriwaki, Y., Mours, B., Mow-Lowry, C. M., Mozzon, S., Muciaccia, F., Mukherjee, Arunava, Mukherjee, D., Mukherjee, Soma, Mukherjee, Subroto, Mukherjee, Suvodip, Mukund, N., Mullavey, A., Munch, J., Muniz, E. A., Murray, P. G., Musenich, R., Muusse, S., Nadji, S. L., Nagano, K., Nagano, S., Nagar, A., Nakamura, K., Nakano, H., Nakano, M., Nakashima, R., Nakayama, Y., Napolano, V, Nardecchia, I, Narikawa, T., Naticchioni, L., Nayak, B., Nayak, R. K., Negishi, R., Neil, B. F., Neilson, J., Nelemans, G., Nelson, T. J. N., Nery, M., Neubauer, P., Neunzert, A., K. Y., Ng, S. W. S., Ng, Nguyen, C., Nguyen, P., Nguyen, T., Quynh, L. Nguyen, W-T, Ni, Nichols, S. A., Nishizawa, A., Nissanke, S., Nitoglia, E., Nocera, F., Norman, M., North, C., Nozaki, S., Nuttall, L. K., Oberling, J., Obuchi, Y., Oelker, E., Ogaki, W., Oganesyan, G., J. J., Oh, Oh, K., S. H., Oh, Ohashi, M., Ohishi, N., Ohkawa, M., Ohme, F., Ohta, H., Okada, M. A., Okutani, Y., Okutomi, K., Olivetto, C., Oohara, K., Ooi, C., Oram, R., Ormiston, R. G., Ormsby, N. D., Ortega, L. F., Oshino, S., Ossokine, S., Osthelder, C., Otabe, S., Ottaway, D. J., Overmier, H., Pace, A. E., Pagano, G., Page, M. A., Pagliaroli, G., Pai, A., Pai, S. A., Palamos, J. R., Palashov, O., Palomba, C., Pan, H., Pan, K., P, P. K., A, Pang, H., Pang, P. T. H., Pankow, C., Pannarale, F., Pant, B. C., Panther, F. H., Paoletti, F., Paoli, A., Paolone, A., Parisi, A., Park, H., Park, J., Parker, W., Pascucci, D., Pasqualetti, A., Passaquieti, R., Passuello, D., Patel, M., Pathak, M., Patricelli, B., Patron, A. 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Pe??a., P??rigois, C., Perri??s, S., P??rrer, M., Romero-Rodr??guez, A., Rosi??ska, D., Sch??nbeck, A., Szczepa??czyk, M. J., Tapia San Mart??n, E. N., Torres-Forn??, A., Tosta e Melo, I., T??yr??, D., Vas??th, M., Vicer??, A., von Reis, E. R. G., von Wrangel, J. S. A., We??els, P., Zadro??ny, A., Institut Lumière Matière [Villeurbanne] (ILM), Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Centre National de la Recherche Scientifique (CNRS), Laboratoire d'Annecy de Physique des Particules (LAPP), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Savoie Mont Blanc (USMB [Université de Savoie] [Université de Chambéry])-Centre National de la Recherche Scientifique (CNRS), AstroParticule et Cosmologie (APC (UMR_7164)), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Centre National de la Recherche Scientifique (CNRS)-Université Paris Cité (UPCité), Laboratoire de Physique des 2 Infinis Irène Joliot-Curie (IJCLab), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS), Astrophysique Relativiste Théories Expériences Métrologie Instrumentation Signaux (ARTEMIS), Université Nice Sophia Antipolis (1965 - 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CNRS)-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France -Centre National de la Recherche Scientifique (CNRS), Centre National d'Études Spatiales [Toulouse] (CNES), Laboratoire Univers et Théories (LUTH (UMR_8102)), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), LIGO Scientific, KAGRA, VIRGO, LIGO Sci Collaboration, Virgo Collaboration, Kagra Collaboration, (Astro)-Particles Physics, Van Swinderen Institute for Particle Physics and G, Other Research IHEF (IoP, FNWI), High Energy Astrophys. & Astropart. 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(UT)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire Midi-Pyrénées (OMP), Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3), Université de Toulouse (UT)-Université de Toulouse (UT)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France -Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France -Centre National de la Recherche Scientifique (CNRS), Abbott, R, Abbott, T, Acernese, F, Ackley, K, Adams, C, Adhikari, N, Adhikari, R, Adya, V, Affeldt, C, Agarwal, D, Agathos, M, Agatsuma, K, Aggarwal, N, Aguiar, O, Aiello, L, Ain, A, Ajith, P, Akutsu, T, Albanesi, S, Allocca, A, Altin, P, Amato, A, Anand, C, Anand, S, Ananyeva, A, Anderson, S, Anderson, W, Ando, M, Andrade, T, Andres, N, Andri??, T, Angelova, S, Ansoldi, S, Antelis, J, Antier, S, Appert, S, Arai, K, Arai, Y, Araki, S, Araya, A, Araya, M, Areeda, J, Ar??ne, M, Aritomi, N, Arnaud, N, Aronson, S, Arun, K, Asada, H, Asali, Y, Ashton, G, Aso, Y, Assiduo, M, Aston, S, Astone, P, Aubin, F, Austin, C, Babak, S, Badaracco, F, Bader, M, Badger, C, Bae, S, Bae, Y, Baer, A, Bagnasco, S, Bai, Y, Bailes, M, Baiotti, L, Baird, J, Bajpai, R, Ball, M, Ballardin, G, Ballmer, S, Balsamo, A, Baltus, G, Banagiri, S, Bankar, D, Barayoga, J, Barbieri, C, Barish, B, Barker, D, Barneo, P, Barone, F, Barr, B, Barsotti, L, Barsuglia, M, Barta, D, Bartlett, J, Barton, M, Bartos, I, Bassiri, R, Basti, A, Bawaj, M, Bayley, J, Baylor, A, Bazzan, M, B??csy, B, Bedakihale, V, Bejger, M, Belahcene, I, Benedetto, V, Beniwal, D, Bennett, T, Bentley, J, Benyaala, M, Bergamin, F, Berger, B, Bernuzzi, S, Bersanetti, D, Bertolini, A, Betzwieser, J, Beveridge, D, Bhandare, R, Bhardwaj, U, Bhattacharjee, D, Bhaumik, S, Bilenko, I, Billingsley, G, Bini, S, Birney, R, Birnholtz, O, Biscans, S, Bischi, M, Biscoveanu, S, Bisht, A, Biswas, B, Bitossi, M, Bizouard, M, Blackburn, J, Blair, C, Blair, D, Blair, R, Bobba, F, Bode, N, Boer, M, Bogaert, G, Boldrini, M, Bonavena, L, Bondu, F, Bonilla, E, Bonnand, R, Booker, P, Boom, B, Bork, R, Boschi, V, Bose, N, Bose, S, Bossilkov, V, Boudart, V, Bouffanais, Y, Bozzi, A, Bradaschia, C, Brady, P, Bramley, A, Branch, A, Branchesi, M, Brau, J, Breschi, M, Briant, T, Briggs, J, Brillet, A, Brinkmann, M, Brockill, P, Brooks, A, Brooks, J, Brown, D, Brunett, S, Bruno, G, Bruntz, R, Bryant, J, Bulik, T, Bulten, H, Buonanno, A, Buscicchio, R, Buskulic, D, Buy, C, Byer, R, Cadonati, L, Cagnoli, G, Cahillane, C, Bustillo, J, Callaghan, J, Callister, T, Calloni, E, Cameron, J, Camp, J, Canepa, M, Canevarolo, S, Cannavacciuolo, M, Cannon, K, Cao, H, Cao, Z, Capocasa, E, Capote, E, Carapella, G, Carbognani, F, Carlin, J, Carney, M, Carpinelli, M, Carrillo, G, Carullo, G, Carver, T, Casanueva Diaz, J, Casentini, C, Castaldi, G, Caudill, S, Cavagli??, M, Cavalier, F, Cavalieri, R, Ceasar, M, Cella, G, Cerd??-Dur??n, P, Cesarini, E, Chaibi, W, Chakravarti, K, Chalathadka Subrahmanya, S, Champion, E, Chan, C, Chan, K, Chan, M, Chandra, K, Chanial, P, Chao, S, Charlton, P, Chase, E, Chassande-Mottin, E, Chatterjee, C, Chatterjee, D, Chaturvedi, M, Chaty, S, Chen, C, Chen, H, Chen, J, Chen, K, Chen, X, Chen, Y, Chen, Z, Cheng, H, Cheong, C, Cheung, H, Chia, H, Chiadini, F, Chiang, C, Chiarini, G, Chierici, R, Chincarini, A, Chiofalo, M, Chiummo, A, Cho, G, Cho, H, Choudhary, R, Choudhary, S, Christensen, N, Chu, H, Chu, Q, Chu, Y, Chua, S, Chung, K, Ciani, G, Ciecielag, P, Cie??lar, M, Cifaldi, M, Ciobanu, A, Ciolfi, R, Cipriano, F, Cirone, A, Clara, F, Clark, E, Clark, J, Clarke, L, Clearwater, P, Clesse, S, Cleva, F, Coccia, E, Codazzo, E, Cohadon, P, Cohen, D, Cohen, L, Colleoni, M, Collette, C, Colombo, A, Colpi, M, Compton, C, Constancio, M, Conti, L, Cooper, S, Corban, P, Corbitt, T, Cordero-Carri??n, I, Corezzi, S, Corley, K, Cornish, N, Corre, D, Corsi, A, Cortese, S, Costa, C, Cotesta, R, Coughlin, M, Coulon, J, Countryman, S, Cousins, B, Couvares, P, Coward, D, Cowart, M, Coyne, D, Coyne, R, Creighton, J, Creighton, T, Criswell, A, Croquette, M, Crowder, S, Cudell, J, Cullen, T, Cumming, A, Cummings, R, Cunningham, L, Cuoco, E, Cury??o, M, Dabadie, P, Dal Canton, T, Dall???osso, S, D??lya, G, Dana, A, Daneshgaranbajastani, L, D???angelo, B, Danilishin, S, D???antonio, S, Danzmann, K, Darsow-Fromm, C, Dasgupta, A, Datrier, L, Datta, S, Dattilo, V, Dave, I, Davier, M, Davies, G, Davis, D, Davis, M, Daw, E, Dean, R, Debra, D, Deenadayalan, M, Degallaix, J, De Laurentis, M, Del??glise, S, Del Favero, V, De Lillo, F, De Lillo, N, Del Pozzo, W, Demarchi, L, De Matteis, F, D???emilio, V, Demos, N, Dent, T, Depasse, A, De Pietri, R, De Rosa, R, De Rossi, C, Desalvo, R, De Simone, R, Dhurandhar, S, D??az, M, Diaz-Ortiz, M, Didio, N, Dietrich, T, Di Fiore, L, Di Fronzo, C, Di Giorgio, C, Di Giovanni, F, Di Giovanni, M, Di Girolamo, T, Di Lieto, A, Ding, B, Di Pace, S, Di Palma, I, Di Renzo, F, Divakarla, A, Dmitriev, A, Doctor, Z, D???onofrio, L, Donovan, F, Dooley, K, Doravari, S, Dorrington, I, Drago, M, Driggers, J, Drori, Y, Ducoin, J, Dupej, P, Durante, O, D???urso, D, Duverne, P, Dwyer, S, Eassa, C, Easter, P, Ebersold, M, Eckhardt, T, Eddolls, G, Edelman, B, Edo, T, Edy, O, Effler, A, Eguchi, S, Eichholz, J, Eikenberry, S, Eisenmann, M, Eisenstein, R, Ejlli, A, Engelby, E, Enomoto, Y, Errico, L, Essick, R, Estell??s, H, Estevez, D, Etienne, Z, Etzel, T, Evans, M, Evans, T, Ewing, B, Fafone, V, Fair, H, Fairhurst, S, Farah, A, Farinon, S, Farr, B, Farr, W, Farrow, N, Fauchon-Jones, E, Favaro, G, Favata, M, Fays, M, Fazio, M, Feicht, J, Fejer, M, Fenyvesi, E, Ferguson, D, Fernandez-Galiana, A, Ferrante, I, Ferreira, T, Fidecaro, F, Figura, P, Fiori, I, Fishbach, M, Fisher, R, 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E, Griffith, D, Griffiths, W, Griggs, H, Grignani, G, Grimaldi, A, Grimm, S, Grote, H, Grunewald, S, Gruning, P, Guerra, D, Guidi, G, Guimaraes, A, Guix??, G, Gulati, H, Guo, H, Guo, Y, Gupta, A, Gupta, P, Gustafson, E, Gustafson, R, Guzman, F, Ha, S, Haegel, L, Hagiwara, A, Haino, S, Halim, O, Hall, E, Hamilton, E, Hammond, G, Han, W, Haney, M, Hanks, J, Hanna, C, Hannam, M, Hannuksela, O, Hansen, H, Hansen, T, Hanson, J, Harder, T, Hardwick, T, Haris, K, Harms, J, Harry, G, Harry, I, Hartwig, D, Hasegawa, K, Haskell, B, Hasskew, R, Haster, C, Hattori, K, Haughian, K, Hayakawa, H, Hayama, K, Hayes, F, Healy, J, Heidmann, A, Heidt, A, Heintze, M, Heinze, J, Heinzel, J, Heitmann, H, Hellman, F, Hello, P, Helmling-Cornell, A, Hemming, G, Hendry, M, Heng, I, Hennes, E, Hennig, J, Hennig, M, Hernandez, A, Hernandez Vivanco, F, Heurs, M, Hild, S, Hill, P, Himemoto, Y, Hines, A, Hiranuma, Y, Hirata, N, Hirose, E, Ho, W, Hochheim, S, Hofman, D, Hohmann, J, Holcomb, D, Holland, N, Hollows, I, Holmes, Z, Holt, K, Holz, D, Hong, Z, Hopkins, P, Hough, J, Hourihane, S, Howell, E, Hoy, C, Hoyland, D, Hreibi, A, Hsieh, B, Hsu, Y, Huang, G, Huang, H, Huang, P, Huang, Y, H??bner, M, Huddart, A, Hughey, B, Hui, D, Hui, V, Husa, S, Huttner, S, Huxford, R, Huynh-Dinh, T, Ide, S, Idzkowski, B, Iess, A, Ikenoue, B, Imam, S, Inayoshi, K, Ingram, C, Inoue, Y, Ioka, K, Isi, M, Isleif, K, Ito, K, Itoh, Y, Iyer, B, Izumi, K, Jaberianhamedan, V, Jacqmin, T, Jadhav, S, James, A, Jan, A, Jani, K, Janquart, J, Janssens, K, Janthalur, N, Jaranowski, P, Jariwala, D, Jaume, R, Jenkins, A, Jenner, K, Jeon, C, Jeunon, M, Jia, W, Jin, H, Johns, G, Jones, A, Jones, D, Jones, J, Jones, P, Jones, R, Jonker, R, Ju, L, Jung, P, Jung, K, Junker, J, Juste, V, Kaihotsu, K, Kajita, T, Kakizaki, M, Kalaghatgi, C, Kalogera, V, Kamai, B, Kamiizumi, M, Kanda, N, Kandhasamy, S, Kang, G, Kanner, J, Kao, Y, Kapadia, S, Kapasi, D, Karat, S, Karathanasis, C, Karki, S, Kashyap, R, Kasprzack, M, Kastaun, W, Katsanevas, S, Katsavounidis, E, Katzman, W, Kaur, T, Kawabe, K, Kawaguchi, K, Kawai, N, Kawasaki, T, K??f??lian, F, Keitel, D, Key, J, Khadka, S, Khalili, F, Khan, S, Khazanov, E, Khetan, N, Khursheed, M, Kijbunchoo, N, Kim, C, Kim, J, Kim, K, Kim, W, Kim, Y, Kimball, C, Kimura, N, Kinley-Hanlon, M, Kirchhoff, R, Kissel, J, Kita, N, Kitazawa, H, Kleybolte, L, Klimenko, S, Knee, A, Knowles, T, Knyazev, E, Koch, P, Koekoek, G, Kojima, Y, Kokeyama, K, Koley, S, Kolitsidou, P, Kolstein, M, Komori, K, Kondrashov, V, Kong, A, Kontos, A, Koper, N, Korobko, M, Kotake, K, Kovalam, M, Kozak, D, Kozakai, C, Kozu, R, Kringel, V, Krishnendu, N, Kr??lak, A, Kuehn, G, Kuei, F, Kuijer, P, Kumar, A, Kumar, P, Kumar, R, Kume, J, Kuns, K, Kuo, C, Kuo, H, Kuromiya, Y, Kuroyanagi, S, Kusayanagi, K, Kuwahara, S, Kwak, K, Lagabbe, P, Laghi, D, Lalande, E, Lam, T, Lamberts, A, Landry, M, Lane, B, Lang, R, Lange, J, Lantz, B, La Rosa, I, Lartaux-Vollard, A, Lasky, P, Laxen, M, Lazzarini, A, Lazzaro, C, Leaci, P, Leavey, S, Lecoeuche, Y, Lee, H, Lee, J, Lee, K, Lee, R, Lehmann, J, Lema??tre, A, Leonardi, M, Leroy, N, Letendre, N, Levesque, C, Levin, Y, Leviton, J, Leyde, K, Li, A, Li, B, Li, J, Li, K, Li, T, Li, X, Lin, C, Lin, F, Lin, H, Lin, L, Linde, F, Linker, S, Linley, J, Littenberg, T, Liu, G, Liu, J, Liu, K, Liu, X, Llamas, F, Llorens-Monteagudo, M, Lo, R, Lockwood, A, London, L, Longo, A, Lopez, D, Lopez Portilla, M, Lorenzini, M, Loriette, V, Lormand, M, Losurdo, G, Lott, T, Lough, J, Lousto, C, Lovelace, G, Lucaccioni, J, L??ck, H, Lumaca, D, Lundgren, A, Luo, L, Lynam, J, Macas, R, Macinnis, M, Macleod, D, Macmillan, I, Macquet, A, Hernandez, I, Magazz??, C, Magee, R, Maggiore, R, Magnozzi, M, Mahesh, S, Majorana, E, Makarem, C, Maksimovic, I, Maliakal, S, Malik, A, Man, N, Mandic, V, Mangano, V, Mango, J, Mansell, G, Manske, M, Mantovani, M, Mapelli, M, Marchesoni, F, Marchio, M, Marion, F, Mark, Z, M??rka, S, M??rka, Z, Markakis, C, Markosyan, A, Markowitz, A, Maros, E, Marquina, A, Marsat, S, Martelli, F, Martin, I, Martin, R, Martinez, M, Martinez, V, Martinovic, K, Martynov, D, Marx, E, Masalehdan, H, Mason, K, Massera, E, Masserot, A, Massinger, T, Masso-Reid, M, Mastrogiovanni, S, Matas, A, Mateu-Lucena, M, Matichard, F, Matiushechkina, M, Mavalvala, N, Mccann, J, Mccarthy, R, Mcclelland, D, Mcclincy, P, Mccormick, S, Mcculler, L, Mcghee, G, Mcguire, S, Mcisaac, C, Mciver, J, Mcrae, T, Mcwilliams, S, Meacher, D, Mehmet, M, Mehta, A, Meijer, Q, Melatos, A, Melchor, D, Mendell, G, Menendez-Vazquez, A, Menoni, C, Mercer, R, Mereni, L, Merfeld, K, Merilh, E, Merritt, J, Merzougui, M, Meshkov, S, Messenger, C, Messick, C, Meyers, P, Meylahn, F, Mhaske, A, Miani, A, Miao, H, Michaloliakos, I, Michel, C, Michimura, Y, Middleton, H, Milano, L, Miller, A, Miller, B, Millhouse, M, Mills, J, Milotti, E, Minazzoli, O, Minenkov, Y, Mio, N, Mir, L, Miravet-Ten??s, M, Mishra, C, Mishra, T, Mistry, T, Mitra, S, Mitrofanov, V, Mitselmakher, G, Mittleman, R, Miyakawa, O, 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Competitividad (España), Govern de les Illes Balears, Agencia Nacional de Investigación y Desarrollo (Chile), Fondo Nacional de Desarrollo Científico y Tecnológico (Chile), The LIGO Scientific Collaboration, the Virgo Collaboration, the KAGRA Collaboration, Physics, Theoretical Physics, Elementary Particle Physics, Faculty of Sciences and Bioengineering Sciences, Andric, T., Arai, K., Arene, M., Becsy, B., Bustillo, J. 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D., O'Dell, J., O'Reilly, B., O'Shaughnessy, R., O'Shea, E., Arellano, F. E. P., Perigois, C., Perries, S., Purrer, M., Romero-Rodriguez, A., Rosinska, D., Schonbeck, A., Suzuki, T., Szczepanczyk, M. J., Tanaka, K., Tanaka, T., San Martin, E. N. T., Tiwari, S., Torres-Forne, A., E Melo, I. T., Toyra, D., Tsao, J. -S., Van Bakel, N., Van Beuzekom, M., Van Den Brand, J. F. J., Van Der Schaaf, L., Van Heijningen, J. V., Van Putten, M. H. P. M., Van Remortel, N., Vasuth, M., Vicere, A., Reis, E. R. G. V., Wrangel, J. S. A. V., Wessels, P., Xu, W. -R., Yamamoto, K., Yu, H., Zadrozny, A., RS: FSE Grav. waves and fundamental physics, Grav. waves and fundamental physics, and RS: FSE MSP
- Subjects
Gravitational wave astronomy ,Neutron stars ,Pulsars ,long-lived ,Astronomy ,frequency: time dependence ,spin ,General Relativity and Quantum Cosmology ,PRECISE ,QC350 ,LIGO ,neutron star ,QC ,pulsar ,QB ,astro-ph.HE ,High Energy Astrophysical Phenomena (astro-ph.HE) ,Physics ,constraint: energy ,gravitational radiation: time dependence ,Physical Sciences ,[PHYS.GRQC]Physics [physics]/General Relativity and Quantum Cosmology [gr-qc] ,Astrophysics - High Energy Astrophysical Phenomena ,asymmetry ,PROPER MOTION ,radiation: electromagnetic ,gr-qc ,Astrophysics::High Energy Astrophysical Phenomena ,FOS: Physical sciences ,Neutron star ,O3 ,General Relativity and Quantum Cosmology (gr-qc) ,Astronomy & Astrophysics ,Transients ,energy loss: rotation ,SPIN-DOWN LIMIT ,Neutron Stars, Transients, Gravitational Waves, LIGO, Virgo, O3 ,SDG 7 - Affordable and Clean Energy ,Gravitational Waves ,Science & Technology ,GLITCHES ,Virgo ,CONSTRAINTS ,Astronomy and Astrophysics ,Neutron Stars ,sensitivity ,Dewey Decimal Classification::500 | Naturwissenschaften::520 | Astronomie, Kartographie ,VIRGO ,Physics and Astronomy ,Space and Planetary Science ,DISCOVERY ,DISTANCE ,ddc:520 ,[PHYS.ASTR]Physics [physics]/Astrophysics [astro-ph] ,EMISSION ,ENERGETIC YOUNG PULSAR - Abstract
Abbott et al., Isolated neutron stars that are asymmetric with respect to their spin axis are possible sources of detectable continuous gravitational waves. This paper presents a fully coherent search for such signals from eighteen pulsars in data from LIGO and Virgo's third observing run (O3). For known pulsars, efficient and sensitive matched-filter searches can be carried out if one assumes the gravitational radiation is phase-locked to the electromagnetic emission. In the search presented here, we relax this assumption and allow both the frequency and the time derivative of the frequency of the gravitational waves to vary in a small range around those inferred from electromagnetic observations. We find no evidence for continuous gravitational waves, and set upper limits on the strain amplitude for each target. These limits are more constraining for seven of the targets than the spin-down limit defined by ascribing all rotational energy loss to gravitational radiation. In an additional search, we look in O3 data for long-duration (hours–months) transient gravitational waves in the aftermath of pulsar glitches for six targets with a total of nine glitches. We report two marginal outliers from this search, but find no clear evidence for such emission either. The resulting duration-dependent strain upper limits do not surpass indirect energy constraints for any of these targets., This material is based upon work supported by NSF's LIGO Laboratory, which is a major facility fully funded by the National Science Foundation. The authors also gratefully acknowledge the support of the Science and Technology Facilities Council (STFC) of the United Kingdom, the Max-Planck-Society (MPS), and the State of Niedersachsen/Germany for support of the construction of Advanced LIGO and construction and operation of the GEO 600 detector. Additional support for Advanced LIGO was provided by the Australian Research Council. The authors gratefully acknowledge the Italian Istituto Nazionale di Fisica Nucleare (INFN), the French Centre National de la Recherche Scientifique (CNRS), and the Netherlands Organization for Scientific Research (NWO), for the construction and operation of the Virgo detector and the creation and support of the EGO consortium. The authors also gratefully acknowledge research support from these agencies as well as by the Council of Scientific and Industrial Research of India, the Department of Science and Technology, India, the Science & Engineering Research Board (SERB), India, the Ministry of Human Resource Development, India, the Spanish Agencia Estatal de Investigación (AEI), the Spanish Ministerio de Ciencia e Innovación and Ministerio de Universidades, the Conselleria de Fons Europeus, Universitat i Cultura and the Direcció General de Política Universitaria i Recerca del Govern de les Illes Balears, the Conselleria d'Innovació Universitats, Ciència i Societat Digital de la Generalitat Valenciana and the CERCA Programme Generalitat de Catalunya, Spain, the National Science Centre of Poland and the European Union—European Regional Development Fund; Foundation for Polish Science (FNP), the Swiss National Science Foundation (SNSF), the Russian Foundation for Basic Research, the Russian Science Foundation, the European Commission, the European Social Funds (ESF), the European Regional Development Funds (ERDF), the Royal Society, the Scottish Funding Council, the Scottish Universities Physics Alliance, the Hungarian Scientific Research Fund (OTKA), the French Lyon Institute of Origins (LIO), the Belgian Fonds de la Recherche Scientifique (FRS-FNRS), Actions de Recherche Concertées (ARC) and Fonds Wetenschappelijk Onderzoek—Vlaanderen (FWO), Belgium, the Paris Île-de-France Region, the National Research, Development and Innovation Office Hungary (NKFIH), the National Research Foundation of Korea, the Natural Science and Engineering Research Council Canada, Canadian Foundation for Innovation (CFI), the Brazilian Ministry of Science, Technology, and Innovations, the International Center for Theoretical Physics South American Institute for Fundamental Research (ICTP-SAIFR), the Research Grants Council of Hong Kong, the National Natural Science Foundation of China (NSFC), the Leverhulme Trust, the Research Corporation, the Ministry of Science and Technology (MOST), Taiwan, the United States Department of Energy, and the Kavli Foundation. The authors gratefully acknowledge the support of the NSF, STFC, INFN, and CNRS for provision of computational resources. This work was supported by MEXT, JSPS Leading-edge Research Infrastructure Program, JSPS Grant-in-Aid for Specially Promoted Research 26000005, JSPS Grant-in-Aid for Scientific Research on Innovative Areas 2905: JP17H06358, JP17H06361 and JP17H06364, JSPS Core-to-Core Program A. Advanced Research Networks, JSPS Grant-in-Aid for Scientific Research (S) 17H06133 and 20H05639, JSPS Grant-in-Aid for Transformative Research Areas (A) 20A203: JP20H05854, the joint research program of the Institute for Cosmic Ray Research, University of Tokyo, National Research Foundation (NRF), Computing Infrastructure Project of KISTI-GSDC, Korea Astronomy and Space Science Institute (KASI), and Ministry of Science and ICT (MSIT) in Korea, Academia Sinica (AS), AS Grid Center (ASGC) and the Ministry of Science and Technology (MoST) in Taiwan under grants including AS-CDA-105-M06, Advanced Technology Center (ATC) of NAOJ, and Mechanical Engineering Center of KEK. We acknowledge that CHIME is located on the traditional, ancestral, and unceded territory of the Syilx/Okanagan people. We are grateful to the staff of the Dominion Radio Astrophysical Observatory, which is operated by the National Research Council of Canada. CHIME is funded by a grant from the Canada Foundation for Innovation (CFI) 2012 Leading Edge Fund (Project 31170) and by contributions from the provinces of British Columbia, Québec, and Ontario. The CHIME/FRB Project, which enabled development in common with the CHIME/Pulsar instrument, is funded by a grant from the CFI 2015 Innovation Fund (Project 33213) and by contributions from the provinces of British Columbia and Québec, and by the Dunlap Institute for Astronomy and Astrophysics at the University of Toronto. Additional support was provided by the Canadian Institute for Advanced Research (CIFAR), McGill University, and the McGill Space Institute thanks to the Trottier Family Foundation, and the University of British Columbia. The CHIME/Pulsar instrument hardware was funded by NSERC RTI-1 grant EQPEQ 458893-2014. This research was enabled in part by support provided by WestGrid (www.westgrid.ca) and Compute Canada (www.computecanada.ca). We acknowledge support from the Natural Sciences and Engineering Research Council of Canada (NSERC) funding reference #CITA 490888-16, the Canadian Institute for Advanced Research, and the UBC Four Year Fellowship (6456). We acknowledge support from EPSRC/STFC fellowship (EP/T017325/1), ANID/FONDECYT grants 1171421 and 1211964, and NASA grants 80NSSC19K1444 and 80NSSC21K0091. This work is supported by NASA through the NICER mission and the Astrophysics Explorers Program, and uses data and software provided by the High Energy Astrophysics Science Archive Research Center (HEASARC), which is a service of the Astrophysics Science Division at NASA/GSFC and High Energy Astrophysics Division of the Smithsonian Astrophysical Observatory.
- Published
- 2022
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5. A gamma-ray pulsar timing array constrains the nanohertz gravitational wave background
- Author
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Ajello, M., Atwood, W.B., Baldini, L., Ballet, J., Barbiellini, G., Bastieri, D., Bellazzini, R., Berretta, A., Bhattacharyya, B., Bissaldi, E., Blandford, R.D., Bloom, E., Bonino, R., Bruel, P., Buehler, R., Burns, E., Buson, S., Cameron, R.A., Caraveo, P.A., Cavazzuti, E., Cibrario, N., Ciprini, S., Clark, C.J., Cognard, I., Coronado-Blazquez, J., Crnogorcevic, M., Cromartie, H., Crowter, K., Cutini, S., d'Ammando, F., de Gaetano, S., de Palma, F., Digel, S.W., Di Lalla, N., Dirirsa, F. Fana, Di Venere, L., Domínguez, A., Ferrara, E.C., Fiori, A., Franckowiak, A., Fukazawa, Y., Funk, S., Fusco, P., Gammaldi, V., Gargano, F., Gasparrini, D., Giglietto, N., Giordano, F., Giroletti, M., Green, D., Grenier, I.A., Guillemot, L., Guiriec, S., Gustafsson, M., Harding, A.K., Hays, E., Hewitt, J.W., Horan, D., Hou, X., Johannesson, G., Keith, M.J., Kerr, M., Kramer, M., Kuss, M., Larsson, S., Latronico, L., Li, J., Longo, F., Loparco, F., Lovellette, M.N., Lubrano, P., Maldera, S., Manfreda, A., Martí-Devesa, G., Mazziotta, M.N., Mereu, I., Michelson, P.F., Mirabal, N., Mitthumsiri, W., Mizuno, T., Monzani, M.E., Morselli, A., Negro, M., Nieder, L., Ojha, R., Omodei, N., Orienti, M., Orlando, E., Ormes, J.F., Paneque, D., Parthasarathy, A., Pei, Z., Persic, M., Pesce-Rollins, M., Pillera, R., Poon, H., Porter, T.A., Principe, G., Racusin, J.L., Raino, S., Rando, R., Rani, B., Ransom, S.M., Ray, P.S., Razzano, M., Razzaque, S., Reimer, A., Reimer, O., Roy, J., Sanchez-Conde, M., Saz Parkinson, P.M., Scargle, J., Scotton, L., Serini, D., Sgro, C., Siskind, E.J., Smith, D.A., Spandre, G., Spiewak, R., Spinelli, P., Stairs, I., Suson, D.J., Swihart, S.J., Tabassum, S., Thayer, J.B., Theureau, G., Torres, D.F., Troja, E., Valverde, J., Wadiasingh, Z., Wood, K., Zaharijas, G., UAM. Departamento de Física Teórica, Ajello, M., Atwood, W. B., Baldini, L., Ballet, J., Barbiellini, G., Bastieri, D., Bellazzini, R., Berretta, A., Bhattacharyya, B., Bissaldi, E., Blandford, R. D., Bloom, E., Bonino, R., Bruel, P., Buehler, R., Burns, E., Buson, S., Cameron, R. A., Caraveo, P. A., Cavazzuti, E., Cibrario, N., Ciprini, S., Clark, C. J., Cognard, I., Coronado-Bl??zquez, J., Crnogorcevic, M., Cromartie, H., Crowter, K., Cutini, S., D'Ammando, F., De Gaetano, S., de Palma, F., Digel, S. W., Di Lalla, N., Fana Dirirsa, F., Di Venere, L., Dom??nguez, A., Ferrara, E. C., Fiori, A., Franckowiak, A., Fukazawa, Y., Funk, S., Fusco, P., Gammaldi, V., Gargano, F., Gasparrini, D., Giglietto, N., Giordano, F., Giroletti, M., Green, D., Grenier, I. A., Guillemot, L., Guiriec, S., Gustafsson, M., Harding, A. K., Hays, E., Hewitt, J. W., Horan, D., Hou, X., J??hannesson, G., Keith, M. J., Kerr, M., Kramer, M., Kuss, M., Larsson, S., Latronico, L., Li, J., Longo, F., Loparco, F., Lovellette, M. N., Lubrano, P., Maldera, S., Manfreda, A., Mart??-Devesa, G., Mazziotta, M. N., Mereu, I., Michelson, P. F., Mirabal, N., Mitthumsiri, W., Mizuno, T., Monzani, M. E., Morselli, A., Negro, M., Nieder, L., Ojha, R., Omodei, N., Orienti, M., Orlando, E., Ormes, J. F., Paneque, D., Parthasarathy, A., Pei, Z., Persic, M., Pesce-Rollins, M., Pillera, R., Poon, H., Porter, T. A., Principe, G., Racusin, J. L., Rain??, S., Rando, R., Rani, B., Ransom, S. M., Ray, P. S., Razzano, M., Razzaque, S., Reimer, A., Reimer, O., Roy, J., S??nchez-Conde, M., Saz Parkinson, P. M., Scargle, J., Scotton, L., Serini, D., Sgr??, C., Siskind, E. J., Smith, D. A., Spandre, G., Spiewak, R., Spinelli, P., Stairs, I., Suson, D. J., Swihart, S. J., Tabassum, S., Thayer, J. B., Theureau, G., Torres, D. F., Troja, E., Valverde, J., Wadiasingh, Z., Wood, K., Zaharijas, G., Astrophysique Interprétation Modélisation (AIM (UMR7158 / UMR_E_9005 / UM_112)), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), Laboratoire Leprince-Ringuet (LLR), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-École polytechnique (X)-Centre National de la Recherche Scientifique (CNRS), Laboratoire de Physique et Chimie de l'Environnement et de l'Espace (LPC2E), Observatoire des Sciences de l'Univers en région Centre (OSUC), Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université d'Orléans (UO)-Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université d'Orléans (UO)-Centre National de la Recherche Scientifique (CNRS)-Centre National d’Études Spatiales [Paris] (CNES), Unité Scientifique de la Station de Nançay (USN), Université Paris sciences et lettres (PSL)-Université d'Orléans (UO)-Centre National de la Recherche Scientifique (CNRS), Laboratoire d'Annecy de Physique des Particules (LAPP), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Savoie Mont Blanc (USMB [Université de Savoie] [Université de Chambéry])-Centre National de la Recherche Scientifique (CNRS), Laboratoire Univers et Particules de Montpellier (LUPM), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)-Université de Montpellier (UM), Centre d'Etudes Nucléaires de Bordeaux Gradignan (CENBG), Université Sciences et Technologies - Bordeaux 1 (UB)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Laboratoire d'Astrophysique de Bordeaux [Pessac] (LAB), Université de Bordeaux (UB)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS), and Fermi-LAT
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High Energy Astrophysical Phenomena (astro-ph.HE) ,Gravitational Waves ,astro-ph.HE ,noise ,radio wave ,Multidisciplinary ,Astrophysics::High Energy Astrophysical Phenomena ,gravitational radiation: background ,DEAE-Dextran ,binary ,FOS: Physical sciences ,Física ,Diethylaminoethyldextran ,GLAST ,monitoring ,gamma ray ,black hole ,galaxy ,[PHYS.ASTR]Physics [physics]/Astrophysics [astro-ph] ,Astrophysics - High Energy Astrophysical Phenomena ,Pulsars ,pulsar - Abstract
Artículo escrito por un elevado número de autores, solo se referencian el que aparece en primer lugar, los autores pertenecientes a la UAM y el nombre del grupo de colaboración, si lo hubiere, La Editorial no permite publicar la versión editorial, After large galaxies merge, their central supermassive black holes are expected to form binary systems. Their orbital motion should generate a gravitational wave background (GWB) at nanohertz frequencies. Searches for this background use pulsar timing arrays, which perform long-term monitoring of millisecond pulsars at radio wavelengths. We used 12.5 years of Fermi Large Area Telescope data to form a gamma-ray pulsar timing array. Results from 35 bright gamma-ray pulsars place a 95% credible limit on the GWB characteristic strain of 1.0 × 10-14 at a frequency of 1 year-1. The sensitivity is expected to scale with tobs, the observing time span, as t-13/6obs. This direct measurement provides an independent probe of the GWB while offering a check on radio noise models
- Published
- 2022
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6. Pulsar Discovery by Global Volunteer Computing
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Knispel, B., Allen, B., Cordes, J. M., Deneva, J. S., Anderson, D., Aulbert, C., Bhat, N. D. R., Bock, O., Bogdanov, S., Brazier, A., Camilo, F., Champion, D. J., Chatterjee, S., Crawford, F., Demorest, P. B., Fehrmann, H., Freire, P. C. C., Gonzalez, M. E., Hammer, D., Hessels, J. W. T., Jenet, F. A., Kasian, L., Kaspi, V. M., Kramer, M., Lazarus, P., van Leeuwen, J., Lorimer, D. R., Lyne, A. G., Machenschalk, B., McLaughlin, M. A., Messenger, C., Nice, D. J., Papa, M. A., Pletsch, H. J., Prix, R., Ransom, S. M., Siemens, X., Stairs, I. H., Stappers, B. W., Stovall, K., and Venkataraman, A.
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- 2010
7. Tests of General Relativity from Timing the Double Pulsar
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Kramer, M., Stairs, I. H., Manchester, R. N., McLaughlin, M. A., Lyne, A. G., Ferdman, R. D., Burgay, M., Lorimer, D. R., Possenti, A., D'Amico, N., Sarkissian, J. M., Hobbs, G. B., Reynolds, J. E., Freire, P. C. C., and Camilo, F.
- Published
- 2006
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8. The MSPSRπ catalogue: VLBA astrometry of 18 millisecond pulsars.
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Ding, H, Deller, A T, Stappers, B W, Lazio, T J W, Kaplan, D, Chatterjee, S, Brisken, W, Cordes, J, Freire, P C C, Fonseca, E, Stairs, I, Guillemot, L, Lyne, A, Cognard, I, Reardon, D J, and Theureau, G
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GRAVITATIONAL waves ,NEUTRON stars ,GRAVITATIONAL constant ,BINARY stars ,STELLAR dynamics ,ASTROMETRY ,PULSARS - Abstract
With unparalleled rotational stability, millisecond pulsars (MSPs) serve as ideal laboratories for numerous astrophysical studies, many of which require precise knowledge of the distance and/or velocity of the MSP. Here, we present the astrometric results for 18 MSPs of the 'MSPSR |$\pi$| ' project focusing exclusively on astrometry of MSPs, which includes the re-analysis of three previously published sources. On top of a standardized data reduction protocol, more complex strategies (i.e. normal and inverse-referenced 1D interpolation) were employed where possible to further improve astrometric precision. We derived astrometric parameters using sterne , a new Bayesian astrometry inference package that allows the incorporation of prior information based on pulsar timing where applicable. We measured significant (|${>}3\, \sigma$|) parallax-based distances for 15 MSPs, including 0.81 ± 0.02 kpc for PSR J1518+4904 – the most significant model-independent distance ever measured for a double neutron star system. For each MSP with a well-constrained distance, we estimated its transverse space velocity and radial acceleration. Among the estimated radial accelerations, the updated ones of PSR J1012+5307 and PSR J1738+0333 impose new constraints on dipole gravitational radiation and the time derivative of Newton's gravitational constant. Additionally, significant angular broadening was detected for PSR J1643−1224, which offers an independent check of the postulated association between the HII region Sh 2-27 and the main scattering screen of PSR J1643−1224. Finally, the upper limit of the death line of γ-ray-emitting pulsars is refined with the new radial acceleration of the hitherto least energetic γ-ray pulsar PSR J1730−2304. [ABSTRACT FROM AUTHOR]
- Published
- 2023
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9. Science with ASKAP: The Australian square-kilometre-array pathfinder
- Author
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Johnston, S., Taylor, R., Bailes, M., Bartel, N., Baugh, C., Bietenholz, M., Blake, C., Braun, R., Brown, J., Chatterjee, S., Darling, J., Deller, A., Dodson, R., Edwards, P., Ekers, R., Ellingsen, S., Feain, I., Gaensler, B., Haverkorn, M., Hobbs, G., Hopkins, A., Jackson, C., James, C., Joncas, G., Kaspi, V., Kilborn, V., Koribalski, B., Kothes, R., Landecker, T., Lenc, A., Lovell, J., Macquart, J.-P., Manchester, R., Matthews, D., McClure-Griffiths, N., Norris, R., Pen, U.-L., Phillips, C., Power, C., Protheroe, R., Sadler, E., Schmidt, B., Stairs, I., Staveley-Smith, L., Stil, J., Tingay, S., Tzioumis, A., Walker, M., Wall, J., and Wolleben, M.
- Published
- 2008
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10. The Discovery of Nulling and Mode-switching Pulsars with CHIME/Pulsar.
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Ng, C., Wu, B., Ma, M., Ransom, S. M., Naidu, A., Fonseca, E., Boyle, P. J., Brar, C., Cubranic, D., Demorest, P. B., Good, D. C., Kaspi, V. M., Masui, K. W., Michilli, D., Patel, C., Renard, A., Scholz, P., Stairs, I. H., Tendulkar, S. P., and Tretyakov, I.
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PULSARS ,MATCHED filters - Abstract
The Pulsar backend of the Canadian Hydrogen Intensity Mapping Experiment has monitored hundreds of known pulsars in the northern sky since fall 2018, providing a rich data set for the study of temporal variations in pulsar emission. Using a matched filtering technique, we report, for the first time, nulling behavior in five pulsars as well as mode switching in nine pulsars. Only one of the pulsars is observed to show both nulling and moding signals. These new nulling and mode-switching pulsars appear to come from a population with relatively long spin periods, in agreement with previous findings in the literature. [ABSTRACT FROM AUTHOR]
- Published
- 2020
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11. Understanding and improving the timing of PSR J0737−3039B.
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Noutsos, A., Desvignes, G., Kramer, M., Wex, N., Freire, P. C. C., Stairs, I. H., McLaughlin, M. A., Manchester, R. N., Possenti, A., Burgay, M., Lyne, A. G., Breton, R. P., Perera, B. B. P., and Ferdman, R. D.
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PULSARS ,DEFLECTION (Mechanics) ,TEST systems ,MASS measurement - Abstract
The double pulsar (PSR J0737−3039A/B) provides some of the most stringent tests of general relativity (GR) and its alternatives. The success of this system in tests of GR is largely due to the high-precision, long-term timing of its recycled-pulsar member, pulsar A. On the other hand, pulsar B is a young pulsar that exhibits significant short-term and long-term timing variations due to the electromagnetic-wind interaction with its companion and geodetic precession. Improving pulsar B's timing precision is a key step towards improving the precision in a number of GR tests with PSR J0737−3039A/B. In this paper, red noise signatures in the timing of pulsar B are investigated using roughly a four-year time span, from 2004 to 2008, beyond which time the pulsar's radio beam precessed out of view. In particular, we discuss the profile variations seen on timescales ranging from minutes – during the so-called "bright" orbital phases – to hours – during its full 2.5 h orbit – to years, as geodetic precession displaces the pulsar's beam with respect to our line of sight. Also, we present our efforts to model the orbit-wide, harmonic modulation that has been previously seen in the timing residuals of pulsar B, using simple geometry and the impact of a radial electromagnetic wind originating from pulsar A. Our model successfully accounts for the long-term precessional changes in the amplitude of the timing residuals but does not attempt to describe the fast profile changes observed during each of the bright phases, nor is it able to reproduce the lack of observable emission between phases. Using a nested sampling analysis, our simple analytical model allowed us to extract information about the general properties of pulsar B's emission beam, such as its approximate shape and intensity, as well as the magnitude of the deflection of that beam, caused by pulsar A's wind. We also determined for the first time that the most likely sense of rotation of pulsar B, consistent with our model, is prograde with respect to its orbital motion. Finally, we discuss the potential of combining our model with future timing of pulsar B, when it becomes visible again, towards improving the precision of tests of GR with the double pulsar. The timing of pulsar B presented in this paper depends on the size of the pulsar's orbit, which was calculated from GR, in order to precisely account for orbital timing delays. Consequently, our timing cannot directly be used to test theories of gravity. However, our modelling of the beam shape and radial wind of pulsar B can indirectly aid future efforts to time this pulsar by constraining part of the additional red noise observed on top of the orbital delays. As such, we conclude that, in the idealised case of zero covariance between our model's parameters and those of the timing model, our model can bring about a factor 2.6 improvement on the measurement precision of the mass ratio, R = m
A /mB , between the two pulsars: a theory-independent parameter, which is pivotal in tests of GR. [ABSTRACT FROM AUTHOR]- Published
- 2020
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12. Faraday rotation measures of Northern hemisphere pulsars using CHIME/Pulsar.
- Author
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Ng, C, Pandhi, A, Naidu, A, Fonseca, E, Kaspi, V M, Masui, K W, Mckinven, R, Renard, A, Scholz, P, Stairs, I H, Tendulkar, S P, and Vanderlinde, K
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FARADAY effect ,MAGNETIC structure ,PULSARS ,GALACTIC magnetic fields ,IONOSPHERE - Abstract
Using commissioning data from the first year of operation of the Canadian Hydrogen Intensity Mapping Experiment's (CHIME) Pulsar backend system, we conduct a systematic analysis of the Faraday Rotation Measure (RM) of the Northern hemisphere pulsars detected by CHIME. We present 55 new RMs as well as obtain improved RM uncertainties for 25 further pulsars. CHIME's low observing frequency and wide bandwidth between 400 and 800 MHz contribute to the precision of our measurements, whereas the high cadence observation provides extremely high signal-to-noise co-added data. Our results represent a significant increase of the pulsar RM census, particularly regarding the Northern hemisphere. These new RMs are for sources that are located in the Galactic plane out to 10 kpc, as well as off the plane to a scale height of ∼16 kpc. This improved knowledge of the Faraday sky will contribute to future Galactic large-scale magnetic structure and ionosphere modelling. [ABSTRACT FROM AUTHOR]
- Published
- 2020
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13. Mode switching and oscillations in PSR B1828–11.
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Stairs, I H, Lyne, A G, Kramer, M, Stappers, B W, van Leeuwen, J, Tung, A, Manchester, R N, Hobbs, G B, Lorimer, D R, and Melatos, A
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OSCILLATIONS , *PULSARS , *TELESCOPES , *GEOMETRIC shapes - Abstract
The young pulsar PSR B1828–11 has long been known to show correlated shape and spindown changes with time-scales of roughly 500 and 250 d, perhaps associated with large-scale magnetospheric switching. Here, we present multihour observations with the Parkes and Green Bank Telescopes at multiple phases across the 500-d cycle and show that the pulsar undergoes mode-changing between two stable, extreme profile states. The fraction of time spent in each profile state naturally accounts for the observed overall 'shape parameter' (defined to be 0 for wide profiles and 1 for narrow ones); this and the variable rate of the mode transitions are directly related to the spindown changes. We observe that the mode transition rate could plausibly function as an additional parameter governing the chaotic behaviour in this object which was proposed earlier by Seymour and Lorimer. Free precession is not needed to account for the variations. [ABSTRACT FROM AUTHOR]
- Published
- 2019
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14. Tests of gravitational symmetries with pulsar binary J1713+0747.
- Author
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Zhu, W W, Desvignes, G, Wex, N, Caballero, R N, Champion, D J, Demorest, P B, Ellis, J A, Janssen, G H, Kramer, M, Krieger, A, Lentati, L, Nice, D J, Ransom, S M, Stairs, I H, Stappers, B W, Verbiest, J P W, Arzoumanian, Z, Bassa, C G, Burgay, M, and Cognard, I
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PULSARS ,BINARY stars ,CELESTIAL mechanics ,GRAVITATIONAL constant ,BINARY pulsars - Abstract
Symmetries play a fundamental role in modern theories of gravity. The strong equivalence principle (SEP) constitutes a collection of gravitational symmetries which are all implemented by general relativity. Alternative theories, however, are generally expected to violate some aspects of SEP. We test three aspects of SEP using observed change rates in the orbital period and eccentricity of binary pulsar J1713+0747: (1) the gravitational constant's constancy as part of locational invariance of gravitation; (2) the universality of free fall (UFF) for strongly self-gravitating bodies; (3) the post-Newtonian parameter |$\hat{\alpha }_3$| in gravitational Lorentz invariance. Based on the pulsar timing result of the combined data set from the North American Nanohertz Gravitational Observatory and the European Pulsar Timing Array, we find |$\dot{G}/G = (-0.1 \pm 0.9) \times 10^{-12}\, {\rm yr}^{-1}$|, which is weaker than Solar system limits, but applies for strongly self-gravitating objects. Furthermore, we obtain an improved test for a UFF violation by a strongly self-gravitating mass falling in the gravitational field of our Galaxy, with a limit of |Δ| < 0.002 (95 per cent C.L.). Finally, we derive an improved limit on the self-acceleration of a gravitationally bound rotating body, to a preferred reference frame in the Universe, with |$-3\times 10^{-20} \lt \hat{\alpha }_3 \lt 4\times 10^{-20}$| (95 per cent C.L.). These results are based on direct UFF and |$\hat{\alpha }_3$| tests using pulsar binaries, and they overcome various limitations of previous tests of this kind. [ABSTRACT FROM AUTHOR]
- Published
- 2019
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15. The evolution of PSR J0737-3039B and a model for relativistic spin precession.
- Author
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Perera, B. B. P., McLaughlin, M. A., Kramer, M., Stairs, I. H., Ferdman, R. D., Freire, P. C. C., Possenti, A., Breton, R. P., Manchester, R. N., Burgay, M., Lyne, A. G., and Camilo, F.
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STELLAR evolution ,PULSARS ,ASTRONOMICAL models ,FIELD emission ,BINARY stars ,ASTRONOMICAL observations ,STELLAR orbits ,DENSITY of stars - Abstract
We present the evolution of the radio emission from the 2.8-s pulsar of the double pulsar system PSR J0737-3039A/B. We describe the changes in the pulse profile and flux density over five years of observations, culminating in the B pulsar's radio disappearance in 2008 March. Over this time, the flux density decreased by 0.177 mJy yr
-1 at the brightest orbital phases and the pulse profile evolved from a single to a double peak. Relativistic spin precession, coupled with an elliptical beam, can model the pulse profile evolution well and the reappearance is expected to happen in ∼2035 with the same part of the beam or in ∼2014 if we assume a symmetric beam shape. [ABSTRACT FROM AUTHOR]- Published
- 2011
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16. The double pulsar: evolutionary constraints from the system geometry.
- Author
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Ferdman, R. D., Stairs, I. H., Kramer, M., Manchester, R. N., Lyne, A. G., Breton, R. P., McLaughlin, M. A., Possenti, A., and Burgay, M.
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- *
PULSARS , *NEUTRON stars , *ORBITAL mechanics , *ASTRONOMICAL observations , *MAGNETIC pole - Abstract
The double pulsar system PSR J0737–3039A/B is a highly relativistic double neutron star (DNS) binary, with a 2.4-hour orbital period. The low mass of the second-formed NS, as well the low system eccentricity and proper motion, point to a different evolutionary scenario compared to other known DNS systems. We describe analysis of the pulse profile shape over 6 years of observations, and present the resulting constraints on the system geometry. We find the recycled pulsar in this system, PSR 0737–3039A, to have a low misalignment between its spin and orbital angular momentum axes, with a 68.3% upper limit of 6.1°, assuming emission from both magnetic poles. This tight constraint lends credence to the idea that the supernova that formed the second pulsar was relatively symmetric, possibly involving electron-capture onto an O-Ne-Mg core. [ABSTRACT FROM AUTHOR]
- Published
- 2008
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17. The Double Pulsar System J0737-3039A/B as Testbed for Relativistic Gravity.
- Author
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Burgay, M., Possenti, A., Kramer, M., Manchester, R. N., D’Amico, N., Lyne, A. G., McLaughlin, M. A., Lorimer, D. R., Camilo, F., Stairs, I. H., Freire, P. C. C., and Joshi, B. C.
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PULSARS ,NEUTRON stars ,RELATIVITY (Physics) ,GRAVITY waves ,PHYSICS - Abstract
The double pulsar system J0737-3039A/B is one of the most intriguing pulsar discoveries of the last decade. This binary system, with an orbital period of only 2.4-hr, provides a truly unique laboratory for relativistic gravity. Its discovery enhances of about an order of magnitude the estimate of the merger rate of double neutron stars systems, opening new possibilities for the current generation of gravitational wave detectors. In this contribution we summarize the present results and look at the prospects of future observations. © 2006 American Institute of Physics [ABSTRACT FROM AUTHOR]
- Published
- 2006
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- View/download PDF
18. The Parkes multibeam pulsar survey: Preliminary results.
- Author
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D’Amico, N., Lyne, A. G., Manchester, R. N., Camilo, F. M., Kaspi, V. M., Bell, J., Stairs, I. H., Crawford, F., Morris, D., and Possenti, A.
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PULSARS ,GALACTIC X-ray sources - Abstract
A high-frequency survey of the Galactic plane for radio pulsars is in progress, using the multibeam receiver on the 64-m Parkes radiotelescope. We describe the survey motivations, the observing plan and the inital results. The survey is discovering many pulsars, more than 500 so far. Eight of the new pulsars are binary, one with a massive companion. At least eight are young, with characteristic ages of less than 100 kyr. Two of these (Kaspi et al, this Conference) have surface dipole magnetic field strengths greater than any other known radio pulsar. [ABSTRACT FROM AUTHOR]
- Published
- 2001
19. The parkes multibeam pulsar survey and the discovery of new energetic radio pulsars.
- Author
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D’Amico, N., Kaspi, V. M., Manchester, R. N., Camilo, F., Lyne, A. G., Possenti, A., Stairs, I. H., Kramer, M., Hobbs, G., and Bell, J. F.
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PULSARS ,GAMMA ray sources ,ASTROPHYSICS - Abstract
The Parkes multibeam pulsar survey is a deep search of the Galactic plane for pulsars. It uses a 13-beam receiver system operating at 1.4 GHz on the 64-m Parkes radio telescope. It has much higher sensitivity than any previous similar survey and is finding large numbers of previously unknown pulsars, many of which are relatively young and energetic. On the basis of an empirical comparison of their properties with other young radio pulsars, some of the new discoveries are expected to be observable as pulsed γ-ray sources. We describe the survey motivation, the experiment characteristics and the results achieved so far. [ABSTRACT FROM AUTHOR]
- Published
- 2001
20. Observation of the millisecond pulsar PSR J0218+4232 by EGRET.
- Author
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Hermsen, W., Kuiper, L., Verbunt, F., Lyne, A., Stairs, I., Thompson, D. J., and Cusumano, G.
- Subjects
PULSARS ,GAMMA rays - Abstract
We report on the likely detection of pulsed high-energy γ-rays from the binary millisecond pulsar PSR J0218+4232 in 100–1000 MeV data from CGRO EGRET. Imaging analysis demonstrates that the highly significant γ-ray source 2EG J0220+4228 (∼10σ) is for energies >100 MeV positionally consistent with both PSR J0218+4232 and the BL Lac 3C66A. However, above 1 GeV 3C66A is the evident counterpart, whereas between 100 and 300 MeV PSR J0218+4232 is the most likely one. Timing analysis using one ephemeris valid for all EGRET observations yields in the 100–1000 MeV range a double-pulse profile at a ∼3.5σ significance level. The phase separation is similar to the component separation of ∼0.47 observed at X-rays with ROSAT HRI (0.1–2.4 keV) and BSAX MECS (1.6–10 keV). A comparison in absolute phase of the γ-ray profile with the 610 MHz radio profile shows that the two γ-ray pulses coincide with two of the three emission features in the complex radio profile. The luminosity in high-energy γ-rays appears to amount ∼10% of the total pulsar spin-down luminosity. © 2000 American Institute of Physics. [ABSTRACT FROM AUTHOR]
- Published
- 2000
21. THE BINARY COMPANION OF YOUNG, RELATIVISTIC PULSAR J1906+0746.
- Author
-
VAN LEEUWEN, J., KASIAN, L., STAIRS, I. H., LORIMER, D. R., CAMILO, F., CHATTERJEE, S., COGNARD, I., DESVIGNES, G., FREIRE, P. C. C., JANSSEN, G. H., KRAMER, M., LYNE, A. G., NICE, D. J., RANSOM, S. M., STAPPERS, B. W., and WEISBERG, J. M.
- Subjects
PULSARS ,PULSATING stars ,STELLAR atmospheres ,SOLAR atmosphere ,ASTROPHYSICS ,ASTRONOMY ,RADIO telescopes - Abstract
PSR J1906+0746 is a young pulsar in the relativistic binary with the second-shortest known orbital period, of 3.98 hr. We here present a timing study based on five years of observations, conducted with the five largest radio telescopes in the world, aimed at determining the companion nature. Through the measurement of three post-Keplerian orbital parameters, we find the pulsar mass to be 1.291(11) M
☉ , and the companion mass 1.322(11) M☉ , respectively. These masses fit well in the observed collection of double neutron stars (DNSs), but are also compatible with other systems where a young pulsar such as J1906+0746 is orbited by a white dwarf (WD). Neither radio pulsations nor dispersion-inducing outflows that could have further established the companion nature were detected. We derive an H I-absorption distance, which indicates that an optical confirmation of a WD companion is very challenging. The pulsar is fading fast due to geodetic precession, limiting future timing improvements. We conclude that the young pulsar J1906+0746 is likely part of a DNS, or is otherwise orbited by an older WD, in an exotic system formed through two stages of mass transfer. [ABSTRACT FROM AUTHOR]- Published
- 2015
- Full Text
- View/download PDF
22. PSR J1756−2251: a pulsar with a low-mass neutron star companion.
- Author
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Ferdman, R. D., Stairs, I. H., Kramer, M., Janssen, G. H., Bassa, C. G., Stappers, B. W., Demorest, P. B., Cognard, I., Desvignes, G., Theureau, G., Burgay, M., Lyne, A. G., Manchester, R. N., and Possenti, A.
- Subjects
- *
NEUTRON stars , *BINARY systems (Astronomy) , *GENERAL relativity (Physics) , *ASTRONOMICAL observations , *PULSARS , *DENSITY of stars , *STAR observations - Abstract
The pulsar PSR J1756−2251 resides in a relativistic double neutron star binary system with a 7.67-h orbit. We have conducted long-term precision timing on more than 9 yr of data acquired from five telescopes, measuring five post-Keplerian parameters. This has led to several independent tests of general relativity (GR), the most constraining of which shows agreement with the prediction of GR at the 4 per cent level. Our measurement of the orbital decay rate disagrees with that predicted by GR, likely due to systematic observational biases. We have derived the pulsar distance from parallax and orbital decay measurements to be $0.73_{-0.24}^{+0.60}\,$kpc (68 per cent) and <1.2 kpc (95 per cent upper limit), respectively; these are significantly discrepant from the distance estimated using Galactic electron density models. We have found the pulsar mass to be 1.341 ± 0.007 M⊙, and a low neutron star (NS) companion mass of 1.230 ± 0.007 M⊙. We also determined an upper limit to the spin–orbit misalignment angle of 34° (95 per cent) based on a system geometry fit to long-term profile width measurements. These and other observed properties have led us to hypothesize an evolution involving a low mass–loss, symmetric supernova progenitor to the second-formed NS companion, as is thought to be the case for the double pulsar system PSR J0737−3039A/B. This would make PSR J1756−2251 the second compact binary system providing concrete evidence for this type of NS formation channel. [ABSTRACT FROM PUBLISHER]
- Published
- 2014
- Full Text
- View/download PDF
23. BROADBAND PULSATIONS FROM PSR B1821–24: IMPLICATIONS FOR EMISSION MODELS AND THE PULSAR POPULATION OF M28.
- Author
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Johnson, T. J., Guillemot, L., Kerr, M., Cognard, I., Ray, P. S., Wolff, M. T., Bégin, S., Janssen, G. H., Romani, R. W., Venter, C., Grove, J. E., Freire, P. C. C., Wood, M., Cheung, C. C., Casandjian, J. M., Stairs, I. H., Camilo, F., Espinoza, C. M., Ferrara, E. C., and Harding, A. K.
- Subjects
GAMMA rays ,EPHEMERIS Time ,STELLAR radiation ,TELESCOPES ,PULSARS - Abstract
We report a 5.4σ detection of pulsed gamma rays from PSR B1821–24 in the globular cluster M28 using ∼44 months of Fermi Large Area Telescope (LAT) data that have been reprocessed with improved instrument calibration constants. We constructed a phase-coherent ephemeris, with post-fit residual rms of 3 μs, using radio data spanning ∼23.2 yr, enabling measurements of the multi-wavelength light-curve properties of PSR B1821–24 at the milliperiod level. We fold RXTE observations of PSR B1821–24 from 1996 to 2007 and discuss implications on the emission zones. The gamma-ray light curve consists of two peaks separated by 0.41 ± 0.02 in phase, with the first gamma-ray peak lagging behind the first radio peak by 0.05 ± 0.02 in phase, consistent with the phase of giant radio pulses. We observe significant emission in the off-peak interval of PSR B1821–24 with a best-fit LAT position inconsistent with the core of M28. We do not detect significant gamma-ray pulsations at the spin or orbital periods from any other known pulsar in M28, and we place limits on the number of energetic pulsars in the cluster. The derived gamma-ray efficiency, ∼2%, is typical of other gamma-ray pulsars with comparable spin-down power, suggesting that the measured spin-down rate (2.2 × 10
36 erg s–1 ) is not appreciably distorted by acceleration in the cluster potential. This confirms PSR B1821–24 as the second very energetic millisecond pulsar in a globular cluster and raises the question of whether these represent a separate class of objects that only form in regions of very high stellar density. [ABSTRACT FROM AUTHOR]- Published
- 2013
- Full Text
- View/download PDF
24. Swings between rotation and accretion power in a binary millisecond pulsar.
- Author
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Papitto, A., Ferrigno, C., Bozzo, E., Rea, N., Pavan, L., Burderi, L., Burgay, M., Campana, S., Di Salvo, T., Falanga, M., Filipović, M. D., Freire, P. C. C., Hessels, J. W. T., Possenti, A., Ransom, S. M., Riggio, A., Romano, P., Sarkissian, J. M., Stairs, I. H., and Stella, L.
- Subjects
PULSARS ,SWINGS ,BINARY systems (Astronomy) ,ANGULAR momentum (Mechanics) ,STELLAR oscillations ,NEUTRON stars - Abstract
It is thought that neutron stars in low-mass binary systems can accrete matter and angular momentum from the companion star and be spun-up to millisecond rotational periods. During the accretion stage, the system is called a low-mass X-ray binary, and bright X-ray emission is observed. When the rate of mass transfer decreases in the later evolutionary stages, these binaries host a radio millisecond pulsar whose emission is powered by the neutron star's rotating magnetic field. This evolutionary model is supported by the detection of millisecond X-ray pulsations from several accreting neutron stars and also by the evidence for a past accretion disc in a rotation-powered millisecond pulsar. It has been proposed that a rotation-powered pulsar may temporarily switch on during periods of low mass inflow in some such systems. Only indirect evidence for this transition has hitherto been observed. Here we report observations of accretion-powered, millisecond X-ray pulsations from a neutron star previously seen as a rotation-powered radio pulsar. Within a few days after a month-long X-ray outburst, radio pulses were again detected. This not only shows the evolutionary link between accretion and rotation-powered millisecond pulsars, but also that some systems can swing between the two states on very short timescales. [ABSTRACT FROM AUTHOR]
- Published
- 2013
- Full Text
- View/download PDF
25. DISCOVERY OF THE OPTICAL COUNTERPARTS TO FOUR ENERGETIC FERMI MILLISECOND PULSARS.
- Author
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BRETON, R. P., VAN KERKWIJK, M. H., ROBERTS, M. S. E., HESSELS, J. W. T., CAMILO, F., MCLAUGHLIN, M. A., RANSOM, S. M., RAY, P. S., and STAIRS, I. H.
- Subjects
PULSARS ,SOLAR energetic particles ,STELLAR luminosity function ,BINARY stars ,ECLIPSES ,FERMI Gamma-ray Space Telescope (Spacecraft) - Abstract
In the last few years, over 43 millisecond radio pulsars have been discovered by targeted searches of unidentified γ -ray sources found by the Fermi Gamma-Ray Space Telescope. A large fraction of these millisecond pulsarsare in compact binaries with low-mass companions. These systems often show eclipses of the pulsar signal andare commonly known as black widows and redbacks because the pulsar is gradually destroying its companion. In this paper, we report on the optical discovery of four strongly irradiated millisecond pulsar companions. All four sources show modulations of their color and luminosity at the known orbital periods from radio timing. Light curvemodeling of our exploratory data shows that the equilibrium temperature reached on the companion ’s dayside with respect to their nightside is consistent with about 10%–30% of the available spin-down energy from the pulsar being reprocessed to increase the companion's dayside temperature. This value compares well with the range observed inother irradiated pulsar binaries and offers insights about the energetics of the pulsarwind and the production of γ -ray emission. In addition, this provides a simple way of estimating the brightness of irradiated pulsar companions given the pulsar spin-down luminosity. Our analysis also suggests that two of the four new irradiated pulsar companionsare only partially filling their Roche lobe. Some of these sources are relatively bright and represent good targets forspectroscopic follow-up. These measurements could enable, among other things, mass determination of the neutronstars in these systems. [ABSTRACT FROM AUTHOR]
- Published
- 2013
- Full Text
- View/download PDF
26. THE DOUBLE PULSAR: EVIDENCE FOR NEUTRON STAR FORMATION WITHOUT AN IRON CORE-COLLAPSE SUPERNOVA.
- Author
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FERDMAN, R. D., STAIRS, I. H., KRAMER, M., BRETON, R. P., MCLAUGHLIN, M. A., FREIRE, P. C. C., POSSENT, A., STAPPERS, B. W., KASPI, V. M., MANCHESTER, R. N., and LYNE, A. G.
- Subjects
- *
BINARY stars , *PULSARS , *STAR formation , *NEUTRON stars , *SUPERNOVAE , *ANGULAR momentum (Nuclear physics) - Abstract
The double pulsar system PSR J0737-3039A/B is a double neutron star binary, with a 2.4 hr orbital period, which has allowed measurement of relativistic orbital perturbations to high precision. The low mass of the second-formed neutron star, as well as the low system eccentricity and proper motion, point to a different evolutionary scenario compared to most other known double neutron star systems. We describe analysis of the pulse profile shape over 6 years of observations and present the resulting constraints on the system geometry.We find the recycled pulsar in this system, PSR J0737-3039A, to be a near-orthogonal rotator with an average separation between its spin and magnetic axes of 90° ±11° ±5°. Furthermore, we find a mean 95% upper limit on the misalignment between its spin and orbital angular momentum axes of 3. ° 2, assuming that the observed emission comes from both magnetic poles. This tight constraint lends credence to the idea that the supernova that formed the second pulsar was relatively symmetric, possibly involving electron capture onto an O-Ne-Mg core. [ABSTRACT FROM AUTHOR]
- Published
- 2013
- Full Text
- View/download PDF
27. Timing the main-sequence-star binary pulsar J1740−3052.
- Author
-
Madsen, E. C., Stairs, I. H., Kramer, M., Camilo, F., Hobbs, G. B., Janssen, G. H., Lyne, A. G., Manchester, R. N., Possenti, A., and Stappers, B. W.
- Subjects
- *
BINARY stars , *PULSARS , *MASS loss (Astrophysics) , *MOLECULAR orbitals , *DISPERSION (Chemistry) , *STELLAR orbits , *STELLAR mass - Abstract
ABSTRACT PSR J1740−3052 is a young pulsar in orbit around a companion that is most likely a B-type main-sequence star. Since its discovery more than a decade ago, data have been taken at several frequencies with instruments at the Green Bank, Parkes, Lovell and Westerbork telescopes. We measure scattering time-scales in the pulse profiles and dispersion measure changes as a function of binary orbital phase and present evidence that both of these vary as would be expected due to a wind from the companion star. Using pulse arrival times that have been corrected for the observed periodic dispersion measure changes, we find a timing solution spanning from 1997 November to 2011 March. This includes measurements of the advance of periastron [ABSTRACT FROM AUTHOR]
- Published
- 2012
- Full Text
- View/download PDF
28. THE DOUBLE PULSAR ECLIPSES. I. PHENOMENOLOGY AND MULTI-FREQUENCY ANALYSIS.
- Author
-
BRETON, R. P., KASPI, V. M., MCLAUGHLIN, M. A., LYUTIKOV, M., KRAMER, M., STAIRS, I. H., RANSOM, S. M., FERDMAN, R. D., CAMILO, F., and POSSENTI, A.
- Subjects
PULSARS ,ECLIPSES ,RADIO waves ,MAGNETOSPHERE ,PHENOMENOLOGY ,TELESCOPES - Abstract
The double pulsar PSR J0737-3039A/B displays short, 30 s eclipses that arise around conjunction when the radio waves emitted by pulsar A are absorbed as they propagate through the magnetosphere of its companion pulsar B. These eclipses offer a unique opportunity to directly probe the magnetospheric structure and the plasma properties of pulsar B. We have performed a comprehensive analysis of the eclipse phenomenology using multi-frequency radio observations obtained with the Green Bank Telescope. We have characterized the periodic flux modulations previously discovered at 820 MHz by McLaughlin et al. and investigated the radio frequency dependence of the duration and depth of the eclipses. Based on their weak radio frequency evolution, we conclude that the plasma in pulsar B's magnetosphere requires a large multiplicity factor (~10
5 ). We also found that, as expected, flux modulations are present at all radio frequencies in which eclipses can be detected. Their complex behavior is consistent with the confinement of the absorbing plasma in the dipolar magnetic field of pulsar B as suggested by Lyutikov & Thompson and such a geometric connection explains that the observed periodicity is harmonically related to pulsar B's spin frequency. We observe that the eclipses require a sharp transition region beyond which the plasma density drops off abruptly. Such a region defines a plasmasphere that would be well inside the magnetospheric boundary of an undisturbed pulsar. It is also two times smaller than the expected standoff radius calculated using the balance of the wind pressure from pulsar A and the nominally estimated magnetic pressure of pulsar B. [ABSTRACT FROM AUTHOR]- Published
- 2012
- Full Text
- View/download PDF
29. HIGH-PRECISION TIMING OF FIVE MILLISECOND PULSARS: SPACE VELOCITIES, BINARY EVOLUTION, AND EQUIVALENCE PRINCIPLES.
- Author
-
Gonzalez, M. E., Stairs, I. H., Ferdman, R. D., Freire, P. C. C., Nice, D. J., Demorest, P. B., Ransom, S. M., Kramer, M., Camilo, F., Hobbs, G., Manchester, R. N., and Lyne, A. G.
- Subjects
- *
PULSARS , *BINARY systems (Astronomy) , *RELATIVISTIC astrophysics , *ASTROPHYSICS , *NEUTRON stars - Abstract
We present high-precision timing of five millisecond pulsars (MSPs) carried out for more than seven years; four pulsars are in binary systems and one is isolated. We are able to measure the pulsars' proper motions and derive an estimate for their space velocities. The measured two-dimensional velocities are in the range 70-210 km s-1, consistent with those measured for other MSPs. We also use all the available proper motion information for isolated and binary MSPs to update the known velocity distribution for these populations. As found by earlier works, we find that the velocity distribution of binary and isolated MSPs are indistinguishable with the current data. Four of the pulsars in our observing program are highly recycled with low-mass white dwarf companions and we are able to derive accurate binary parameters for these systems. For three of these binary systems, we are able to place initial constraints on the pulsar masses with best-fit values in the range 1.0-1.6 M⊙. The implications of the results presented here to our understanding of binary pulsar evolution are discussed. The updated parameters for the binary systems studied here, together with recently discovered similar systems, allowed us to update previous limits on the violation of the strong equivalence principle through the parameter |Δ| to 4.6 x 10-3 (95% confidence) and the violation of Lorentz invariance/momentum conservation through the parameter |α̂ to 5.5 x 10-20 (95% confidence). [ABSTRACT FROM AUTHOR]
- Published
- 2011
- Full Text
- View/download PDF
30. On the nature and evolution of the unique binary pulsar J1903+0327.
- Author
-
Freire, P. C. C., Bassa, C. G., Wex, N., Stairs, I. H., Champion, D. J., Ransom, S. M., Lazarus, P., Kaspi, V. M., Hessels, J. W. T., Kramer, M., Cordes, J. M., Verbiest, J. P. W., Podsiadlowski, P., Nice, D. J., Deneva, J. S., Lorimer, D. R., Stappers, B. W., McLaughlin, M. A., and Camilo, F.
- Subjects
STELLAR evolution ,BINARY stars ,PULSARS ,ASTRONOMICAL observations ,STAR formation ,STELLAR mass ,STELLAR magnetic fields ,STELLAR orbits ,NEUTRON stars - Abstract
PSR J1903+0327, a millisecond pulsar in an eccentric () 95-d orbit with an companion poses a challenge to our understanding of stellar evolution in binary and multiple-star systems. Here we describe optical and radio observations which rule out most of the scenarios proposed to explain formation of this system. Radio timing measurements of three post-Keplerian effects yield the most precise measurement of the mass of a millisecond pulsar to date: solar masses (99.7 per cent confidence limit). This rules out some equations of state for superdense matter; furthermore, it is consistent with the spin-up of the pulsar by mass accretion, as suggested by its short spin period and low magnetic field. Optical spectroscopy of a proposed main-sequence counterpart shows that its orbital motion mirrors the pulsar's 95-d orbit; being therefore its binary companion. This finding rules out a previously suggested scenario which proposes that the system is presently a hierarchical triple. Conventional binary evolution scenarios predict that, after recycling a neutron star into a millisecond pulsar, the binary companion should become a white dwarf and its orbit should be nearly circular. This suggests that if PSR J1903+0327 was recycled, its present companion was not responsible for it. The optical detection also provides a measurement of the systemic radial velocity of the binary; this and the proper motion measured from pulsar timing allow the determination of the systemic 3D velocity in the Galaxy. We find that the system is always within 270 pc of the plane of the Galaxy, but always more than 3 kpc away from the Galactic Centre. Thus an exchange interaction in a dense stellar environment (like a globular cluster or the Galactic Centre) is not likely to be the origin of this system. We suggest that after the supernova that formed it, the neutron star was in a tight orbit with a main-sequence star and the present companion was a tertiary farther out. The neutron star then accreted matter from its evolving inner companion, forming a millisecond pulsar. The inner companion then disappeared, either due to a chaotic three-body interaction with the outer star (caused by the expansion of the inner orbit that necessarily results from mass transfer), or in the case of a very compact inner system, due to ablation/accretion by the newly formed millisecond pulsar. We discuss in detail the possible evolution of such a system before the supernova. [ABSTRACT FROM AUTHOR]
- Published
- 2011
- Full Text
- View/download PDF
31. The binary companion of PSR J1740−3052.
- Author
-
Bassa, C. G., Brisken, W. F., Nelemans, G., Stairs, I. H., Stappers, B. W., and Kramer, M.
- Subjects
X-ray binaries ,X-ray astronomy ,PULSARS ,STELLAR mass ,ELECTRONS ,SCIENTIFIC observation ,INTERFEROMETRY - Abstract
We report on the identification of a near-infrared counterpart to the massive (>11 M) binary companion of pulsar J3052. An accurate celestial position of PSR J3052 is determined from interferometric radio observations. Adaptive optics corrected near-infrared imaging observations show a counterpart at the interferometric position of the pulsar. The counterpart has and . Based on distance and absorption estimates from models of the Galactic electron and dust distributions, these observed magnitudes are consistent with those of a main-sequence star as the binary companion. We argue that this counterpart is the binary companion to PSR J3052 and thus rule out a stellar mass black hole as the pulsar companion. [ABSTRACT FROM AUTHOR]
- Published
- 2011
- Full Text
- View/download PDF
32. A search for the binary companion to PSR J1740–3052.
- Author
-
Tam, C. R., Stairs, I. H., Wagner, S., Kramer, M., Manchester, R. N., Lyne, A. G., Camilo, F., and D'Amico, N.
- Subjects
- *
PULSARS , *INFRARED spectroscopy , *ASTRONOMICAL observations , *RADIATION sources , *TELESCOPES - Abstract
We present results of near-infrared spectroscopy of the late-type star coincident with the young pulsar PSR J 3052. High-spectral-resolution K-band ( m) observations were obtained in 2003 with the Infrared Spectrometer and Array Camera instrument on the Very Large Telescope and with Phoenix on the Gemini Telescope. We find no consistent evidence of a radial velocity shift in the star compatible with the known pulsar orbit, setting a limit on the minimum mass of the star, if it is the companion, of . We therefore conclude that the observed star is likely to be a foreground object. No sign of the previously reported Brackett-γ emission was found in this analysis. Our findings support previous suggestions that the companion to PSR J 3052 is most likely a massive B-type star that has been obscured by the bright late-type star in the foreground. [ABSTRACT FROM AUTHOR]
- Published
- 2010
- Full Text
- View/download PDF
33. Timing observations of rotating radio transients.
- Author
-
McLaughlin, M. A., Lyne, A. G., Keane, E. F., Kramer, M., Miller, J. J., Lorimer, D. R., Manchester, R. N., Camilo, F., and Stairs, I. H.
- Subjects
RADIATION sources ,PULSARS ,MAGNETIC fields ,NEUTRON stars ,ASTRONOMY - Abstract
We present radio timing measurements of six rotating radio transient (RRAT) sources discovered in the Parkes Multibeam Pulsar Survey. These provide four new phase-connected timing solutions and two updated ones, making a total of seven of the original 11 reported RRATs now with high-precision rotational and astrometric parameters. Three of these seven RRATs have magnetic fields greater than 10
13 G, with spin-down properties similar to those of the magnetars and X-ray detected isolated neutron stars. Another two of these RRATs have long periods and large characteristic ages, and lie near the ‘death line’ for radio pulsar emission. The remaining two RRATs with timing solutions have properties typical of the bulk of the pulsar population. The new solutions offer insights into what might be responsible for the unusual emission properties. We demonstrate that the RRATs have significantly longer periods and higher magnetic fields than normal radio pulsars, and find no correlation with other spin-down parameters. These solutions also provide precise positions, which will facilitate follow-up studies at high energies, crucial for relating these sources with other neutron star populations. [ABSTRACT FROM AUTHOR]- Published
- 2009
- Full Text
- View/download PDF
34. A new technique for timing the double pulsar system.
- Author
-
Freire, P. C. C., Wex, N., Kramer, M., Lorimer, D. R., McLaughlin, M. A., Stairs, I. H., Rosen, R., and Lyne, A. G.
- Subjects
PULSARS ,RADIO frequency ,GEOMETRIC modeling ,ELECTROMAGNETIC waves ,ORBITS (Astronomy) - Abstract
In 2004, McLaughlin et al. discovered a phenomenon in the radio emission of PSR J0737−3039B (B) that resembles drifting subpulses. The repeat rate of the subpulses is equal to the spin frequency of PSR J0737−3039A (A); this led to the suggestion that they are caused by incidence upon B's magnetosphere of electromagnetic radiation from A. Here, we describe a geometrical model which predicts the delay of B's subpulses relative to A's radio pulses. We show that measuring these delays is equivalent to tracking A's rotation from the point of view of a hypothetical observer located near B. This has three main astrophysical applications: (i) to determine the sense of rotation of A relative to its orbital plane, (ii) to estimate where in B's magnetosphere the radio subpulses are modulated and (iii) to provide an independent estimate of the mass ratio of A and B. The latter might improve existing tests of gravitational theories using this system. [ABSTRACT FROM AUTHOR]
- Published
- 2009
- Full Text
- View/download PDF
35. PSR J1753−2240: a mildly recycled pulsar in an eccentric binary system.
- Author
-
Keith, M. J., Kramer, M., Lyne, A. G., Eatough, R. P., Stairs, I. H., Possenti, A., Camilo, F., and Manchester, R. N.
- Subjects
NEUTRON stars ,PULSARS ,WHITE dwarf stars ,COMPACT objects (Astronomy) ,ASTRONOMICAL observations - Abstract
We report the discovery of PSR J1753−2240 in the Parkes Multibeam Pulsar Survey data base. This 95-ms pulsar is in an eccentric binary system with a 13.6-d orbital period. Period derivative measurements imply a characteristic age in excess of 1 Gyr, suggesting that the pulsar has undergone an episode of accretion-induced spin-up. The eccentricity and spin period are indicative of the companion being a second neutron star, so that the system is similar to that of PSR J1811−1736, although other companion types cannot be ruled out at this time. The companion mass is constrained by geometry to lie above 0.48 solar masses, although long-term timing observations will give additional constraints. If the companion is a white dwarf or a main-sequence star, optical observations may yield a direct detection of the companion. If the system is indeed one of the few known double neutron star systems, it would lie significantly far from the recently proposed spin-period/eccentricity relationship. [ABSTRACT FROM AUTHOR]
- Published
- 2009
- Full Text
- View/download PDF
36. The Double Pulsar.
- Author
-
Kramer, M. and Stairs, I. H.
- Subjects
- *
PULSARS , *NEUTRON stars , *GENERAL relativity (Physics) , *GRAVITATIONAL fields , *STAR formation , *STELLAR evolution - Abstract
A landmark discovery was made in 2003 when the first binary system containing two active radio pulsars was observed. Not only is this system, PSR J0737-3039A/B, the most relativistic binary, system ever found, but it also exhibits eclipses and magnetospheric interactions. The observational and theoretical insights provided by this first double pulsar go far beyond applications in pulsar astrophysics alone. Timing observations of the two pulsars provide the best test of general relativity (GR) in strong gravitational fields. Studies of the system's evolution suggest the possibility of an unusual neutron star formation process. The discovery of this system has a significant impact on the expected coalescence rate of galactic double neutron stars and the detection of merging systems in Earth-bound gravitational-wave detectors. Moreover, observations and modeling of the eclipses provide evidence for relativistic spin precession and dipolar magnetic fields in pulsar magnetospheres. This paper reviews the double pulsar's properties and what they mean for fundamental physics and astrophysics. [ABSTRACT FROM AUTHOR]
- Published
- 2008
- Full Text
- View/download PDF
37. Interstellar scintillation of the double pulsar J0737-3039: effects of anisotropy.
- Author
-
Rickett, B., Coles, B., Mclaughlin, M., Bank, J., Lyne, A., Stairs, I., Ferdman, R., Freire, P., and Camilo, F.
- Subjects
ASTRONOMICAL observations ,SCINTILLATION spectrometry ,PULSARS ,ANISOTROPY ,RADIATION sources - Abstract
We describe a year-long series of interstellar scintillation (ISS) observations of the double pulsar using the Green Bank Telescope. The goal is to improve the estimates of the proper motion velocity of this interesting binary system relative to the interstellar plasma. The scintillation time scale varies remarkably over its orbital period but only provides three independent parameters per epoch. Extra information is found from repeating these observations over a year, as the Earth velocity changes, and also from cross-correlating the scintillations of the two pulsars. The latter gives clear evidence that the ISS is anisotropic with an axial ratio greater than 2.6. This reduces the proper motion velocity over that obtained assuming isotropic ISS. However, changes in the timing of the orbital windows when the slow pulsar is detectable have limited the usefulness of this technique. A progress report on the work is presented. [ABSTRACT FROM AUTHOR]
- Published
- 2007
- Full Text
- View/download PDF
38. Age constraints in the double pulsar system J0737–3039.
- Author
-
Lorimer, D. R., Freire, P. C. C., Stairs, I. H., Kramer, M., McLaughlin, M. A., Burgay, M., Thorsett, S. E., Dewey, R. J., Lyne, A. G., Manchester, R. N., D'Amico, N., Possenti, A., and Joshi, B. C.
- Subjects
PULSARS ,NEUTRON stars ,BINARY stars ,STAR formation ,COSMOCHRONOLOGY ,ASTROPHYSICS - Abstract
We investigate the age constraints that can be placed on the double pulsar system using models for the spin-down of the first-born 22.7-ms Pulsar A and the 2.77-s Pulsar B with characteristic ages of 210 and 50 Myr, respectively. Standard models assuming dipolar spin-down of both pulsars suggest that the time since the formation of Pulsar B is ∼50 Myr, that is, close to Pulsar B's characteristic age. However, adopting models which account for the impact of Pulsar A's relativistic wind on Pulsar B's spin-down, we find that the formation of Pulsar B took place either 80 or 180 Myr ago, depending on the interaction mechanism. Formation 80 Myr ago, closer to Pulsar B's characteristic age, would result in the contribution from J0737−3039 to the inferred coalescence rates for double neutron star binaries increasing by 40 per cent. The 180 Myr age is closer to Pulsar A's characteristic age and would be consistent with the most recent estimates of the coalescence rate. The new age constraints do not significantly impact recent estimates of the kick velocity, tilt angle between pre- and post-supernova orbital planes or pre-supernova mass of Pulsar B's progenitor. [ABSTRACT FROM AUTHOR]
- Published
- 2007
- Full Text
- View/download PDF
39. PSR J1453+1902 and the radio luminosities of solitary versus binary millisecond pulsars.
- Author
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Lorimer, D. R., McLaughlin, M. A., Champion, D. J., and Stairs, I. H.
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NEUTRON stars ,RADIATION sources ,PULSARS ,GALAXIES ,EXPERIMENTAL design ,MATHEMATICAL analysis - Abstract
We present 3 yr of timing observations for PSR J1453+1902, a 5.79-ms pulsar discovered during a 430-MHz drift-scan survey with the Arecibo telescope. Our observations show that PSR J1453+1902 is solitary and has a proper motion of mas yr
−1 . At the nominal distance of 1.2 kpc estimated from the pulsar's dispersion measure, this corresponds to a transverse speed of , typical of the millisecond pulsar population. We analyse the current sample of 55 millisecond pulsars in the Galactic disc and revisit the question of whether the luminosities of isolated millisecond pulsars are different from their binary counterparts. We demonstrate that the apparent differences in the luminosity distributions seen in samples selected from 430-MHz surveys can be explained by small-number statistics and observational selection biases. An examination of the sample from 1400-MHz surveys shows no differences in the distributions. The simplest conclusion from the current data is that the spin, kinematic, spatial and luminosity distributions of isolated and binary millisecond pulsars are consistent with a single homogeneous population. [ABSTRACT FROM AUTHOR]- Published
- 2007
- Full Text
- View/download PDF
40. The formation of the double pulsar PSR J0737−3039A/B.
- Author
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Stairs, I. H., Thorsett, S. E., Dewey, R. J., Kramer, M., and McPhee, C. A.
- Subjects
- *
PULSARS , *SUPERNOVAE , *GALAXIES , *GAMMA ray bursts , *NEUTRON stars , *BINARY stars - Abstract
Recent timing observations of the double pulsar J0737−3039A/B have shown that its transverse velocity is extremely low, only 10 km s−1, and nearly in the plane of the Galaxy. With this new information, we rigorously re-examine the history and formation of this system, determining estimates of the pre-supernova companion mass, supernova kick and misalignment angle between the pre- and post-supernova orbital planes. We find that the progenitor to the recently formed ‘B’ pulsar was probably less than , lending credence to suggestions that this object may not have formed in a normal supernova involving the collapse of an iron core. At the same time, the supernova kick was likely non-zero. A comparison to the history of the double neutron star binary B1534+12 suggests a range of possible parameters for the progenitors of these systems, which should be taken into account in future binary population syntheses and in predictions of the rate and spatial distribution of short gamma-ray burst events. [ABSTRACT FROM AUTHOR]
- Published
- 2006
- Full Text
- View/download PDF
41. Discovery of 10 pulsars in an Arecibo drift-scan survey.
- Author
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Lorimer, D. R., Xilouris, K. M., Fruchter, A. S., Stairs, I. H., Camilo, F., Vazquez, A. M., Eder, J. A., McLaughlin, M. A., Roberts, M. S. E., Hessels, J. W. T., and Ransom, S. M.
- Subjects
PULSARS ,RADIATION sources ,STARS ,GALAXIES ,ASTRONOMY ,TELESCOPES - Abstract
We present the results of a 430-MHz survey for pulsars conducted during the upgrade to the 305-m Arecibo radio telescope. Our survey covered a total of 1147 deg
2 of sky using a drift-scan technique. We detected 33 pulsars, 10 of which were not known prior to the survey observations. The highlight of the new discoveries is PSR J0407+1607, which has a spin period of 25.7 ms, a characteristic age of 1.5 Gyr and is in a 1.8-yr orbit about a low-masscompanion. The long orbital period and small eccentricitymake the binary system an important new addition to the ensemble of binary pulsars suitable to test for violations of the strong equivalence principle. We also report on our initially unsuccessful attempts to detect optically the companion to J0407+1607, which imply that its absolute visual magnitude is>12.1. If, as expected on evolutionary grounds, the companion is an He white dwarf, our non-detection implies a cooling age of least 1 Gyr. [ABSTRACT FROM AUTHOR]- Published
- 2005
- Full Text
- View/download PDF
42. The Parkes Multibeam Pulsar Survey– V. Finding binary and millisecond pulsars.
- Author
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Faulkner, A. J., Stairs, I. H., Kramer, M., Lyne, A. G., Hobbs, G., Possenti, A., Lorimer, D. R., Manchester, R. N., McLaughlin, M. A., D'Amico, N., Camilo, F., and Burgay, M.
- Subjects
- *
PULSARS , *NEUTRON stars , *BINARY stars , *HARMONIC motion , *STELLAR orbits , *RADIATION sources - Abstract
The Parkes Multibeam Pulsar Survey is the most successful survey of the Galactic plane ever performed, finding over 600 pulsars in the initial processing. We report on a reprocessing of all 40 000 beams with a number of algorithms, including conventional frequency-domain searches and an acceleration search for fast binary pulsars. The very large volume of results coupled with the need to distinguish new candidates from known pulsars and their many harmonics, often with multiple detections from different search algorithms, necessitated the development of a new graphical selection tool tightly linked to a web-based results data base. We discuss and demonstrate the benefits of these software systems, which are specifically designed for large survey projects. The results of this processing have been encouraging. We have discovered 128 new pulsars, including 11 binary and 15 millisecond pulsars; in addition to those previously found in the survey, we have thus far discovered 737 pulsars. In this paper, we discuss the discoveries of PSR J1744−3922 (a 172-ms mildly recycled pulsar in a 4.6-h orbit that exhibits nulling behaviour, not previously observed in recycled or binary objects), PSR J1802−2124 (an intermediate mass binary pulsar) and PSR J1801−1417 (a solitary millisecond pulsar). [ABSTRACT FROM AUTHOR]
- Published
- 2004
- Full Text
- View/download PDF
43. The Parkes multibeam pulsar survey– IV. Discovery of 180 pulsars and parameters for 281 previously known pulsars.
- Author
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Hobbs, G., Faulkner, A., Stairs, I. H., Camilo, F., Manchester, R. N., Lyne, A. G., Kramer, M., D'Amico, N., Kaspi, V. M., Possenti, A., Mclaughlin, M. A., Lorimer, D. R., Burgay, M., Joshi, B. C., and Crawford, F.
- Subjects
PULSARS ,RADIATION sources ,NEUTRON stars ,ATMOSPHERIC density ,ROTATIONAL motion ,DYNAMICS - Abstract
The Parkes multibeam pulsar survey has led to the discovery of more than 700 pulsars. In this paper, we provide timing solutions, flux densities and pulse profiles for 180 of these new discoveries. Two pulsars, PSRs J1736–2843 and J1847–0130, have rotational periods P > 6 s and are therefore among the slowest rotating radio pulsars known. Conversely, with P = 1.8 ms, PSR J1843–1113 has the third-shortest period of pulsars currently known. This pulsar and PSR J1905+0400 (P = 3.8 ms) are both solitary. We also provide orbital parameters for a new binary system, PSR J1420–5625, which has P = 34 ms, an orbital period of 40 d and a minimum companion mass of 0.4 solar masses. The 10°-wide strip along the Galactic plane that was surveyed is known to contain 264 radio pulsars that were discovered prior to the multibeam pulsar survey. We have redetected almost all of these pulsars and provide new dispersion measure values and flux densities at 20cm for the redetected pulsars. [ABSTRACT FROM AUTHOR]
- Published
- 2004
- Full Text
- View/download PDF
44. The Parkes Multibeam Pulsar Survey – III. Young pulsars and the discovery and timing of 200 pulsars.
- Author
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Kramer, M., Bell, J. F., Manchester, R. N., Lyne, A. G., Camilo, F., Stairs, I. H., D'Amico, N., Kaspi, V. M., Hobbs, G., Morris, D. J., Crawford, F., Possenti, A., Joshi, B. C., McLaughlin, M. A., Lorimer, D. R., and Faulkner, A. J.
- Subjects
PULSARS ,RADIATION sources - Abstract
ABSTRACT The Parkes Multibeam Pulsar Survey has unlocked vast areas of the Galactic plane, which were previously invisible to earlier low-frequency and less-sensitive surveys. The survey has discovered more than 600 new pulsars so far, including many that are young and exotic. In this paper we report the discovery of 200 pulsars for which we present positional and spin-down parameters, dispersion measures, flux densities and pulse profiles. A large number of these new pulsars are young and energetic, and we review possible associations of γ-ray sources with the sample of about 1300 pulsars for which timing solutions are known. Based on a statistical analysis, we estimate that about 19 ± 6 associations are genuine. The survey has also discovered 12 pulsars with spin properties similar to those of the Vela pulsar, nearly doubling the known population of such neutron stars. Studying the properties of all known ‘Vela-like’ pulsars, we find their radio luminosities to be similar to normal pulsars, implying that they are very inefficient radio sources. Finally, we review the use of the newly discovered pulsars as Galactic probes and discuss the implications of the new NE2001 Galactic electron density model for the determination of pulsar distances and luminosities. [ABSTRACT FROM AUTHOR]
- Published
- 2003
- Full Text
- View/download PDF
45. PULSAR TIMING OBSERVATIONS AND TESTS OF GENERAL RELATIVITY IN DOUBLE-NEUTRON-STAR BINARIES.
- Author
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STAIRS, I. H.
- Subjects
PULSARS ,NEUTRON stars ,GENERAL relativity (Physics) ,BINARY stars ,PULSATING stars ,GRAVITATIONAL fields - Published
- 2002
46. INTERSTELLAR SCINTILLATION OF THE DOUBLE PULSAR J0737–3039.
- Author
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Rickett, B. J., Coles, W. A., Nava, C. F., McLaughlin, M. A., Ransom, S. M., Camilo, F., Ferdman, R. D., Freire, P. C. C., Kramer, M., Lyne, A. G., and Stairs, I. H.
- Subjects
SCINTILLATION of stars ,PULSARS ,INTERSTELLAR medium ,ORBITAL velocity ,VERY long baseline interferometry - Abstract
We report a series of observations of the interstellar scintillation (ISS) of the double pulsar J0737–3039 over the course of 18 months. As in earlier work, the basic phenomenon is the variation in the ISS caused by the changing transverse velocities of each pulsar, the ionized interstellar medium (IISM), and the Earth. The transverse velocity of the binary system can be determined both by very long baseline interferometry and timing observations. The orbital velocity and inclination is almost completely determined from timing observations, but the direction of the orbital angular momentum is not known. Since the Earth's velocity is known, and can be compared with the orbital velocity by its effect on the timescale of the ISS, we can determine the orientation Ω of the pulsar orbit with respect to equatorial coordinates (Ω = 65 ± 2°). We also resolve the ambiguity (i = 88.°7 or 91.°3) in the inclination of the orbit deduced from the measured Shapiro delay by our estimate i = 88.°1 ± 0.°5. This relies on the analysis of the ISS over both frequency and time, and provides a model for the location, anisotropy, turbulence level, and transverse phase gradient of the IISM. We find that the IISM can be well-modeled during each observation, typically of a few orbital periods, but its turbulence level and mean velocity vary significantly over the 18 months. [ABSTRACT FROM AUTHOR]
- Published
- 2014
- Full Text
- View/download PDF
47. REALISTIC MODELING OF THE PULSE PROFILE OF PSR J0737-3039A.
- Author
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Perera, B. B. P., Kim, C., McLaughlin, M. A., Ferdman, R. D., Kramer, M., Stairs, I. H., Freire, P. C. C., and Possenti, A.
- Subjects
NEUTRON stars ,PULSARS ,NEUTRONS ,STARS ,ASTROPHYSICS research - Abstract
The Double Pulsar, PSR J0737-3039A/B, is a unique system in which both neutron stars have been detected as radio pulsars. As shown in Ferdman et al., there is no evidence for pulse profile evolution of the A pulsar, and the geometry of the pulsar was fit well with a double-pole circular radio beam model. Assuming a more realistic polar cap model with a vacuum retarded dipole magnetosphere configuration including special relativistic effects, we create synthesized pulse profiles for A given the best-fit geometry from the simple circular beam model. By fitting synthesized pulse profiles to those observed from pulsar A, we constrain the geometry of the radio beam, namely the half-opening angle and the emission altitude, to be ∼30° and ∼10 neutron star radii, respectively. Combining the observational constraints of PSR J0737-3039A/B, we are able to construct the full three-dimensional orbital geometry of the Double Pulsar. The relative angle between the spin axes of the two pulsars (Δ
S ) is estimated to be ∼(138° ± 5°) at the current epoch and will likely remain constant until tidal interactions become important in ∼85 Myr, at merger. [ABSTRACT FROM AUTHOR]- Published
- 2014
- Full Text
- View/download PDF
48. X-RAY OBSERVATIONS OF BLACK WIDOW PULSARS.
- Author
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Gentile, P. A., Roberts, M. S. E., McLaughlin, M. A., Camilo, F., Hessels, J. W. T., Kerr, M., Ransom, S. M., Ray, P. S., and Stairs, I. H.
- Subjects
PULSARS ,BINARY stars ,X-rays ,RADIATION sources ,SPECTRUM analysis - Abstract
We describe the first X-ray observations of five short orbital period (P
B < 1 day), γ-ray emitting, binary millisecond pulsars (MSPs). Four of these—PSRs J0023+0923, J1124–3653, J1810+1744, and J2256–1024—are “black-widow” pulsars, with degenerate companions of mass ≪0.1 M☼ , three of which exhibit radio eclipses. The fifth source, PSR J2215+5135, is an eclipsing “redback” with a near Roche-lobe filling ∼0.2 solar mass non-degenerate companion. Data were taken using the Chandra X-Ray Observatory and covered a full binary orbit for each pulsar. Two pulsars, PSRs J2215+5135 and J2256–1024, show significant orbital variability while PSR J1124–3653 shows marginal orbital variability. The lightcurves for these three pulsars have X-ray flux minima coinciding with the phases of the radio eclipses. This phenomenon is consistent with an intrabinary shock emission interpretation for the X-rays. The other two pulsars, PSRs J0023+0923 and J1810+1744, are fainter and do not demonstrate variability at a level we can detect in these data. All five spectra are fit with three separate models: a power-law model, a blackbody model, and a combined model with both power-law and blackbody components. The preferred spectral fits yield power-law indices that range from 1.3 to 3.2 and blackbody temperatures in the hundreds of eV. The spectrum for PSR J2215+5135 shows a significant hard X-ray component, with a large number of counts above 2 keV, which is additional evidence for the presence of intrabinary shock emission. This is similar to what has been detected in the low-mass X-ray binary to MSP transition object PSR J1023+0038. [ABSTRACT FROM AUTHOR]- Published
- 2014
- Full Text
- View/download PDF
49. A very large glitch in PSR J1806-2125.
- Author
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Hobbs, G, Lyne, A. G, Joshi, B. C, Kramer, M, Stairs, I. H, Camilo, F, Manchester, R. N, D'Amico, N, Possenti, A, and Kaspi, V. M
- Subjects
PULSARS ,NEUTRON stars - Abstract
PSR J1806-2125 is a pulsar discovered in the Parkes multibeam pulsar survey with a rotational period of 0.4 s and a characteristic age of 65 kyr. Between MJDs 51462 and 51894 this pulsar underwent an increase in rotational frequency of &Deltav/v &assymp; 16 x 10[sup -6]. The magnitude of this glitch is ∼ 2.5 times greater than any previously observed in any pulsar and 16 times greater than the mean glitch size. This Letter gives the parameters of the glitch and compares its properties with those of previously observed events. The existence of such large and rare glitches offers new hope for attempts to observe thermal X-ray emission from the internal heat released following a glitch, and suggests that pulsars which previously have not been observed to glitch may do so on long time-scales. [ABSTRACT FROM AUTHOR]
- Published
- 2002
- Full Text
- View/download PDF
50. Search for transient gravitational waves in coincidence with short-duration radio transients during 2007-2013
- Author
-
Alejandro Garcia, Michael E Zucker, Courtney R. Epstein, Roman Schnabel, S. Mastrogiovanni, J. E. Brau, A. A. van Veggel, Efim A. Khazanov, G. Ballardin, B. D. Lackey, L. Pinard, J. L. Willis, D. J. McManus, Howard Pan, Denis Martynov, R. Robie, Marco Bazzan, Kipp Cannon, M. Steinke, A. Kutynia, F. Clara, D. Meacher, M. Fays, B. M. Levine, J. Flanigan, A. Cumming, Aaron Buikema, C. C. Wipf, E. J. King, M. J. Cowart, V. Dolique, Federico Ferrini, R. S. Ottens, G. Vajente, P. Kumar, Q. Chu, W. Z. Korth, K. Siellez, C. Baune, Laura Cadonati, E. Genin, F. Baldaccini, Evan Ochsner, D. Ugolini, N. Letendre, B. R. Hall, A. J. Weinstein, A. Di Lieto, V. Boschi, G. Mazzolo, M. Landry, S. Ascenzi, M. Lormand, J. Bergman, H. J. Bulten, J. P. Zendri, Michael Kramer, B. Mours, G. McIntyre, P. Thomas, Z. Patrick, V. Malvezzi, David Jones, Erik Katsavounidis, Vladimir B. Braginsky, H. Vahlbruch, T. Chalermsongsak, Alessandro Bertolini, K. Riles, H. Middleton, M. Weinert, F. Fidecaro, G. M. Guidi, M. Barsuglia, A. Grant, N. Mazumder, M. Prijatelj, T. Dal Canton, J. Warner, H. N. Isa, M. J. Hart, C. J. Bell, N. A. Robertson, L. Kleybolte, J. C. Driggers, P. Puppo, A. W. Muir, C. L. Mueller, C. C. Arceneaux, R. Cavalieri, H. Rew, R. Passaquieti, A. Perreca, Marco Cavaglia, S. J. Chamberlin, M. Vasúth, G. Dojcinoski, Francesco Pannarale, H. Qi, R. F. Cardoso, J. K. Blackburn, A. Sawadsky, Timothy MacDonald, Leo Singer, T. Isogai, M. Branchesi, A. K. Srivastava, Robinjeet Singh, E. Chassande-Mottin, J. C. Batch, Jonathan Cripe, Sheila Rowan, G. A. Prodi, R. DeSalvo, K. Mason, Márton Tápai, David Jonathan Hofman, E. C. Ferreira, E. A. Huerta, B. Behnke, R. Birney, Susan M. Scott, I. Khan, Y. Wang, G. M. Harry, D. Rosińska, K. Venkateswara, Aaron Berndsen, Patrice Hello, Laleh Sadeghian, V. P. Mitrofanov, S. T. Countryman, A. W. Heptonstall, Vivien Raymond, Peter R. Saulson, L. Cerboni Baiardi, T. D. Abbott, O. Puncken, A. Ford, V. Necula, Surabhi Sachdev, Christopher J. Moore, Daniele Trifirò, Chad Hanna, K. A. Hodge, Bala R. Iyer, J. M. Gonzalez Castro, Yuri Levin, S. McCormick, O. V. Palashov, Sean T. McWilliams, M. Merzougui, Carl-Johan Haster, C. Aulbert, F. Piergiovanni, Chang-Hwan Lee, G. Cerretani, L. Trozzo, S. Mirshekari, M. C. Araya, Sanjeev Dhurandhar, Jason W. T. Hessels, Albert Lazzarini, Y. Minenkov, E. G. Thomas, A. Basti, P. G. Murray, Todd Adams, R. Goetz, F. Frasconi, Tarun Souradeep, Liam Cunningham, R. M. Martin, Robert Stone, A. Di Virgilio, A. R. Williamson, W. Del Pozzo, P. F. Cohadon, H. Heitmann, Roy Williams, G. Pillant, V. V. Frolov, L. Rolland, W. D. Vousden, Albrecht Rüdiger, J. Oberling, A. Singhal, L. Matone, Fabrizio Barone, Haocun Yu, Fiodor Sorrentino, B. K. Berger, M. Davier, M. J. Yap, Samaya Nissanke, Jens Birch, Z. Frei, T. Penucci, M. Ast, O. E. S. Sauter, F. Mezzani, Fabien Kéfélian, J. H. Hough, M. Mohan, K. G. Arun, T. Huynh-Dinh, J. Luo, K. Haris, Chunglee Kim, Xing-Jiang Zhu, V. Sequino, M. S. Shahriar, S. Huang, P. Bacon, Daniel E. Holz, S. Márka, D. Barta, J. S. Kissel, V. I. Kondratiev, B. J. J. Slagmolen, Joshua Yablon, D. Passuello, N. Man, Fan Zhang, Collin D. Capano, D. J. Vine, J. R. Palamos, T. Z. Summerscales, Stanislav Babak, D. Day, Namjun Kim, J.-D. Fournier, M. H. Wimmer, K. Kokeyama, J. J. Hacker, Philip F. Hopkins, William Yam, L. Wallace, S. Chung, S. Farinon, M. Constancio, Duncan A. Brown, T. Sadecki, A. Królak, R. Frey, Kenneth A. Strain, Jimin George, M. Sieniawska, A. Moggi, Kevin M. Ryan, H. J. Jang, Gregory Ashton, Fabio Marchesoni, Maria Ilaria Del Principe, B. Patricelli, F. Garufi, C. M. Reed, M. Korobko, G. D. Meadors, Margaret Millhouse, S. Grunewald, M. Agathos, S. G. Gaonkar, D. Bersanetti, S. R. Morriss, Riccardo Bassiri, Magnus Manske, E. Maros, Douglas R. Cook, A. Viceré, Yi Chen, M. E. Normandin, G. Bogaert, Haixing Miao, K. Haughian, J. Eichholz, B. C. Stephens, Marc Favata, V. M. Kaspi, Roger Jones, V. J. Roma, Michele Zanolin, Michael Pürrer, Serena Vinciguerra, F. Nocera, D. J. White, I. Fiori, D. J. Hosken, C. Zhao, E. Coccia, C. Graef, B. A. Weaver, J. G. Rollins, Kyungmin Kim, D. D. Brown, B. O'Reilly, T. J. Massinger, T. Vo, O. J. Piccinni, S. B. Coughlin, S. L. Danilishin, M. Shaltev, O. Bock, L. Di Fiore, James G. Bartlett, K. L. Dooley, G. Mendell, T. Di Girolamo, L.-W. Wei, N. van Bakel, Lisa Barsotti, R. J. G. Jonker, I. Kowalska, S. Kaufer, Eric Oelker, M. Boer, J. B. Kanner, Rainer Weiss, S. Penn, D. Schuette, A. Giazotto, R. Pedurand, Benno Willke, Joonghan Kim, A. Grado, Fredrick A. Jenet, P. Shawhan, Alberto Vecchio, L. Prokhorov, I. Ferrante, C. Cahillane, Will M. Farr, Subhabrata Mitra, R. W. P. Drever, E. A. Quintero, J. Hennig, G. L. Mansell, Jessica Steinlechner, A. Neunzert, Duncan R. Lorimer, Nam-Gyu Kim, S. A. Usman, G. D. Hammond, D. H. Shoemaker, M. Kasprzack, P. Couvares, P. Charlton, Kejia Lee, P. Brockill, G. Vedovato, D. B. Kozak, Tyson Littenberg, T. B. Edo, Gavin Davies, A. Lenon, B. L. Pearlstone, M. Ducrot, Archisman Ghosh, X. F. Wang, Rebecca Fisher, Maura McLaughlin, H. Fehrmann, W. W. Johnson, G. P. Newton, M. Fyffe, Michael L. Gorodetsky, T. Westphal, Ryan Lynch, M. Heurs, S. S. Premachandra, A. Masserot, V. Dattilo, Tejinder Kaur, Edwin J. Son, K. Kawabe, D. Huet, S. H. Huttner, F. Cleva, Marie-Anne Bizouard, S. Walsh, A. Sheperd, Maximiliano Isi, Zifan Zhou, M. Montani, Alessandra Buonanno, R. Metzdorff, Nancy Aggarwal, Zahoor Ali Khan, V. Fafone, Andrew Melatos, Kendall Ackley, R. K. Nayak, D. Mendoza-Gandara, J-Y. Vinet, B. Shapiro, Reed Essick, R. Everett, Jan Harms, D. Talukder, C. V. Torres, S. M. Aston, C. Vorvick, I. W. Harry, Satyanarayan Ray Pitambar Mohapatra, Viswanath Bavigadda, A. Sevigny, P. B. Graff, I. A. Bilenko, J. L. Wright, Alessandra Corsi, David J. Ottaway, A. Paoli, A. R. Wade, R. S. Lynch, G. Kuehn, C. M. Mow-Lowry, Sergey P. Vyatchanin, A. Idrisy, M. Yvert, Lionel Martellini, Kazuhiro Agatsuma, F. Magaña-Sandoval, R. M. Magee, Peter Fritschel, Gabriela Gonzalez, Benjamin William Allen, P. J. Sutton, P. Bojtos, David Blair, Karsten Danzmann, J. Betzwieser, M. Gosselin, Alex B. Nielsen, J. H. Romie, G. Serna, Stefan Hild, Y. Ma, P. Chawla, S. Kandhasamy, B. Sorazu, T. Etzel, Hua Wang, S. E. Hollitt, Vicky Kalogera, G. Lunsford, D. B. Kelley, C. Palomba, J.-M. Isac, Heinz-Bernd Eggenstein, Zhihui Du, V. Predoi, I. W. Martin, L. Rei, M. Masso-Reid, Mark Hannam, I. Dave, Adam A. Libson, M. Fletcher, B. Hughey, Evan Goetz, Michael W. Coughlin, A. L. Stuver, J. E. Lord, M. Mageswaran, C. C. Yancey, A. Ain, B. F. Whiting, J. Casanueva Diaz, Lei Zhang, P. Schale, E. Cuoco, A. Gupta, M. Tonelli, Larry R. Price, John Miller, Leopoldo Milano, Slawomir Gras, C. Bond, Nergis Mavalvala, Sascha Husa, A. Gennai, H. P. Daveloza, C. Van Den Broeck, Arielle N. Walker, Jordan Camp, P. Wessels, T. T. Nguyen, C. S. Unnikrishnan, Lloyd Paul Aiello, R. Douglas, F. J. Raab, David E. McClelland, Scott M. Ransom, B. C. Pant, N. Indik, Andrea Chincarini, T. Prestegard, S. S. Eikenberry, M. S. Kehl, A. Post, Yanxi Zhang, M. Bejger, Hartmut Grote, F. Marion, E. J. Daw, J. Schmidt, Kevin Stovall, C. Krueger, Rosa Poggiani, V. Germain, V. Frey, Jong H. Chow, Paolo Addesso, K. D. Giardina, G. Losurdo, L. Conti, Ingrid H. Stairs, M. Vardaro, A. Pasqualetti, A. Mytidis, A. Pele, P. Raffai, R. Chakraborty, D. M. Macleod, S. E. Gossan, G. Greco, L. E. Wade, J. S. Lange, B. L. Swinkels, Neil J. Cornish, Evan Keane, G. Bergmann, J. Hanks, N. A. Strauss, Timothy A Welborn, V. Tiwari, K. Gill, Walter Winkler, Jiayi Qin, A. Singer, M. C. Díaz, Samuel Deléglise, L. P. Dartez, C. Pankow, P. M. Meyers, Hyun Lee, M. D. Rohr, J. Calderón Bustillo, Jerome Degallaix, Y. Setyawati, C. Casentini, Sebastian Khan, F. Carbognani, E. O. Lebigot, T. Denker, Christopher P. L. Berry, A. D. Silva, H. J. Pletsch, Enrico Calloni, G. Traylor, Thomas Corbitt, L. Salconi, C. A. Costa, L. R. Cominsky, R. Gustafson, M. P. Thirugnanasambandam, N. Straniero, G. Wu, F. Robinet, S. Meshkov, Seog Oh, W. G. Anderson, G. Cella, Giacomo Ciani, B. P. Abbott, E. K. Gustafson, Meng Wang, D.B. DeBra, A. Bisht, M. Leonardi, S. E. Zuraw, Sourav Ghosh, Imre Bartos, V. Quetschke, Bangalore Suryanarayana Sathyaprakash, Martin M. Fejer, J. R. Smith, R. Bork, L. van der Schaaf, S. A. Pai, Cody Messick, Yann Bouffanais, A. Bohe, A. C. Green, Fausto Acernese, Fumiko Kawazoe, D. Moraru, A. S. Markosyan, Madeline Wade, P. Leaci, A. Colla, Harald Lück, D. Verkindt, J. N. Marx, Vuk Mandic, Gianpietro Cagnoli, László Á. Gergely, Tania Regimbau, M. M. Hanke, Barry C. Barish, Christian D. Ott, K. Nedkova, S. Tiwari, S. B. Anderson, M. Cho, Paul J. Groot, M. Zevin, A. Staley, L. Zangrando, Sung-Po Chao, John A. Clark, S. Jawahar, T. Theeg, Ben Farr, V. Re, E. A. Houston, X. Guo, Matthew Evans, S. Vass, A. Glaefke, C. Tomlinson, J. D. Lough, R. Coyne, Mi Zhang, C. Gray, G. H. Ogin, Soma Mukherjee, S. C. McGuire, J. F. Read, M. K. Gupta, J. G. Martinez, John Veitch, S. Di Pace, J. C. Barayoga, D. Nolting, M. Neri, J. A. Giaime, S. Raja, S. E. Strigin, Y. M. Kim, R. De Rosa, Ruslan Vaulin, David B. Tanner, F. Jiménez-Forteza, H. Radkins, N. S. Darman, N. Arnaud, Maggie Tse, Christophe Collette, Ho-Gyu Lee, K. A. Thorne, C. Messenger, Fabrice Matichard, R. Inta, Aviral Singh, P. J. King, W. Kells, S. Klimenko, M. MacInnis, M. Mantovani, H. R. Paris, L. Kuo, H. Yamamoto, E. Capocasa, Thibaut Jacqmin, C. I. Torrie, A. Mata, P. Rapagnani, D. R. Ingram, A. Bozzi, B. A. Boom, S. D'Antonio, A. Allocca, M. Brinkmann, F. Vetrano, J. Zweizig, D. C. Coyne, E. L. Merilh, K. Izumi, M. C. Tringali, I. Nardecchia, Anne M. Archibald, Sebastian Steinlechner, Andreas Freise, Vincenzo Pierro, Paul D. Lasky, S. G. Crowder, J. van Leeuwen, I. Maksimovic, A. Rocchi, D. V. Voss, R. L. Ward, G. Hemming, Matthew Pitkin, D. Stiles, N. Gehrels, N. A. Gordon, Xavier Siemens, P. J. Veitch, Andrew Lundgren, M. Factourovich, S. Koley, S. Leake, A. Schönbeck, T. P. Downes, R. L. Savage, A. S. Bell, D. Pascucci, Mallory S. E. Roberts, J. R. Sanders, J. Prasad, W. Katzman, F. Y. Khalili, M. Saleem, Carlos Cepeda, Robert J. McCarthy, H. Fair, M. Pichot, Andrea Taracchini, J. V. van Heijningen, David Coward, Sheon Chua, R. Bonnand, N. Leroy, M. Granata, Marek Szczepanczyk, Minchuan Zhou, G. Wang, C. Bradaschia, P. Oppermann, Linqing Wen, Ik Siong Heng, K. N. Mukund, Steven Bloemen, Jonathan R. Gair, M. Pedraza, H. A. G. Gabbard, M. Chan, Ettore Majorana, Christie A. McPhee, W. Engels, S. M. Koehlenbeck, Eric Thrane, Maria Alessandra Papa, F. Cavalier, A. Zadro.zny, C. Michel, G. Valdes, S. E. Dwyer, David Keitel, G. Islas, G. Debreczeni, Chia-Liang Cheng, Antoine Heidmann, Gleb Romanov, Nicholas Smith, Qi Fang, Rui Miguel Faisca Rodrigues Pereira, D. Töyrä, N. A. Lockerbie, H. Overmier, T. Hardwick, D. Steinmeyer, P. Ehrens, F. Travasso, Blake Moore, Sarah Caudill, R. Quitzow-James, R. Day, F. Ohme, V. B. 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Di Giovanni, K. E. Gushwa, Matthew Heintze, Rocco Romano, J. S. Key, John D. Scott, D. L. Kinzel, R. A. Mercer, Tomasz Bulik, M. Turconi, Patrick Brady, J. S. Areeda, D. Fiorucci, Richard J. Oram, François Bondu, Guido Mueller, Joseph D. Romano, J. Ming, A. Conte, T. A. Callister, N. Kijbunchoo, Michael Thomas, Sebastien Biscans, David Murphy, A. Effler, A. L. Lombardi, M. Drago, Guenakh Mitselmakher, J. R. Leong, G. Stratta, Jesper Munch, M. van Beuzekom, C. C. Buchanan, M. Haney, P. Popolizio, Koji Arai, H. S. Cho, P. Fulda, Kasem Mossavi, Jade Powell, V. Mangano, Achamveedu Gopakumar, M. De Laurentis, E. J. Sanchez, S. E. Barclay, David H. Reitze, Yi-Ming Hu, Tjonnie G. F. Li, Eric Howell, F. Ricci, S. Leavey, L. K. Nuttall, J. Boyles, M. R. Abernathy, G. Billingsley, A. M. Sergeev, D. Buskulic, J. Logue, B. Lantz, C. Affeldt, R. Taylor, R. T. DeRosa, T. P. Bodiya, R. M. S. Schofield, M. Oliver, Benjamin J. Owen, J. F. J. van den Brand, M. Tacca, Martin Hendry, E. 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Paris 11 (UP11), AstroParticule et Cosmologie (APC (UMR_7164)), Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), Astrophysique Relativiste Théories Expériences Métrologie Instrumentation Signaux (ARTEMIS), Centre National de la Recherche Scientifique (CNRS)-Observatoire de la Côte d'Azur, Université Côte d'Azur (UCA)-COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-Université Côte d'Azur (UCA)-COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Nice Sophia Antipolis (... - 2019) (UNS), COMUE Université Côte d'Azur (2015-2019) (COMUE UCA), Institut de Physique de Rennes (IPR), Université de Rennes 1 (UR1), Université de Rennes (UNIV-RENNES)-Université de Rennes (UNIV-RENNES)-Centre National de la Recherche Scientifique (CNRS), Laboratoire des matériaux avancés (LMA), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon, Science and Engineering Research Board, Canadian Network for Research and Innovation in Machining Technology, Natural Sciences and Engineering Research Council of Canada, Alfred P. 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Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), Université Nice Sophia Antipolis (1965 - 2019) (UNS), COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de la Côte d'Azur, COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-Université Côte d'Azur (UCA)-Université Côte d'Azur (UCA)-Centre National de la Recherche Scientifique (CNRS), Université de Rennes (UR)-Centre National de la Recherche Scientifique (CNRS), Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Laboratoire d'Annecy de Physique des Particules ( LAPP/Laboratoire d'Annecy-le-Vieux de Physique des Particules ), Institut National de Physique Nucléaire et de Physique des Particules du CNRS ( IN2P3 ) -Université Savoie Mont Blanc ( USMB [Université de Savoie] [Université de Chambéry] ) -Centre National de la Recherche Scientifique ( CNRS ), Laboratoire de l'Accélérateur Linéaire ( LAL ), Université Paris-Sud - Paris 11 ( UP11 ) -Institut National de Physique Nucléaire et de Physique des Particules du CNRS ( IN2P3 ) -Centre National de la Recherche Scientifique ( CNRS ), Astrophysique Relativiste Théories Expériences Métrologie Instrumentation Signaux ( ARTEMIS ), Université Nice Sophia Antipolis ( UNS ), Université Côte d'Azur ( UCA ) -Université Côte d'Azur ( UCA ) -Institut national des sciences de l'Univers ( INSU - CNRS ) -Observatoire de la Côte d'Azur, Université Côte d'Azur ( UCA ) -Centre National de la Recherche Scientifique ( CNRS ), AstroParticule et Cosmologie ( APC - UMR 7164 ), Centre National de la Recherche Scientifique ( CNRS ) -Institut National de Physique Nucléaire et de Physique des Particules du CNRS ( IN2P3 ) -Observatoire de Paris-Université Paris Diderot - Paris 7 ( UPD7 ) -Commissariat à l'énergie atomique et aux énergies alternatives ( CEA ), Institut de Physique de Rennes ( IPR ), Université de Rennes 1 ( UR1 ), Université de Rennes ( UNIV-RENNES ) -Université de Rennes ( UNIV-RENNES ) -Centre National de la Recherche Scientifique ( CNRS ), Laboratoire des matériaux avancés ( LMA ), Université Claude Bernard Lyon 1 ( UCBL ), Université de Lyon-Université de Lyon-Institut National de Physique Nucléaire et de Physique des Particules du CNRS ( IN2P3 ) -Centre National de la Recherche Scientifique ( CNRS ) -Centre National de la Recherche Scientifique ( CNRS ), The LIGO Scientific Collaboration, The Virgo Collaboration, Laboratoire d'Annecy de Physique des Particules (LAPP/Laboratoire d'Annecy-le-Vieux de Physique des Particules), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Observatoire de Paris, PSL Research University (PSL)-PSL Research University (PSL)-Université Paris Diderot - Paris 7 (UPD7), Université Nice Sophia Antipolis (... - 2019) (UNS), Université Côte d'Azur (UCA)-Université Côte d'Azur (UCA)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de la Côte d'Azur, Université Côte d'Azur (UCA)-Centre National de la Recherche Scientifique (CNRS), Université de Lyon-Université de Lyon-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)-Centre National de la Recherche Scientifique (CNRS), (Astro)-Particles Physics, Abbott, B. P., Abbott, R., Abbott, T. D., Abernathy, M. R., Acernese, F., Ackley, K., Adams, C., Adams, T., Addesso, P., Adhikari, R. X., Adya, V. B., Affeldt, C., Agathos, M., Agatsuma, K., Aggarwal, N., Aguiar, O. D., Aiello, L., Ain, A., Ajith, P., Allen, B., Allocca, A., Altin, P. A., Anderson, S. B., Anderson, W. G., Arai, K., Araya, M. C., Arceneaux, C. C., Areeda, J. S., Arnaud, N., Arun, K. G., Ascenzi, S., Ashton, G., Ast, M., Aston, S. M., Astone, P., Aufmuth, P., Aulbert, C., Babak, S., Bacon, P., Bader, M. K. M., Baker, P. T., Baldaccini, F., Ballardin, G., Ballmer, S. W., Barayoga, J. C., Barclay, S. E., Barish, B. C., Barker, D., Barone, F., Barr, B., Barsotti, L., Barsuglia, M., Barta, D., Bartlett, J., Bartos, I., Bassiri, R., Basti, A., Batch, J. C., Baune, C., Bavigadda, V., Bazzan, M., Behnke, B., Bejger, M., Bell, A. S., Bell, C. J., Berger, B. K., Bergman, J., Bergmann, G., Berry, C. P. L., Bersanetti, D., Bertolini, A., Betzwieser, J., Bhagwat, S., Bhandare, R., Bilenko, I. A., Billingsley, G., Birch, J., Birney, R., Biscans, S., Bisht, A., Bitossi, M., Biwer, C., Bizouard, M. A., Blackburn, J. K., Blair, C. D., Blair, D. G., Blair, R. M., Bloemen, S., Bock, O., Bodiya, T. P., Boer, M., Bogaert, G., Bogan, C., Bohe, A., Bojtos, P., Bond, C., Bondu, F., Bonnand, R., Boom, B. A., Bork, R., Boschi, V., Bose, S., Bouffanais, Y., Bozzi, A., Bradaschia, C., Brady, P. R., Braginsky, V. B., Branchesi, M., Brau, J. E., Briant, T., Brillet, A., Brinkmann, M., Brisson, V., Brockill, P., Brooks, A. F., Brown, D. A., Brown, D. D., Brown, N. M., Buchanan, C. C., Buikema, A., Bulik, T., Bulten, H. J., Buonanno, A., Buskulic, D., Buy, C., Byer, R. L., Cadonati, L., Cagnoli, G., Cahillane, C., Calderón Bustillo, J., Callister, T., Calloni, Enrico, Camp, J. B., Cannon, K. C., Cao, J., Capano, C. D., Capocasa, E., Carbognani, F., Caride, S., Casanueva Diaz, J., Casentini, C., Caudill, S., Cavaglià, M., Cavalier, F., Cavalieri, R., Cella, G., Cepeda, C. B., Cerboni Baiardi, L., Cerretani, G., Cesarini, E., Chakraborty, R., Chalermsongsak, T., Chamberlin, S. J., Chan, M., Chao, S., Charlton, P., Chassande Mottin, E., Chen, H. Y., Chen, Y., Cheng, C., Chincarini, A., Chiummo, A., Cho, H. S., Cho, M., Chow, J. H., Christensen, N., Chu, Q., Chua, S., Chung, S., Ciani, G., Clara, F., Clark, J. A., Cleva, F., Coccia, E., Cohadon, P. F., Colla, A., Collette, C. G., Cominsky, L., Constancio, M., Conte, A., Conti, L., Cook, D., Corbitt, T. R., Cornish, N., Corsi, A., Cortese, S., Costa, C. A., Coughlin, M. W., Coughlin, S. B., Coulon, J. P., Countryman, S. T., Couvares, P., Coward, D. M., Cowart, M. J., Coyne, D. C., Coyne, R., Craig, K., Creighton, J. D. E., Cripe, J., Crowder, S. G., Cumming, A., Cunningham, L., Cuoco, E., Dal Canton, T., Danilishin, S. L., D'Antonio, S., Danzmann, K., Darman, N. S., Dattilo, V., Dave, I., Daveloza, H. P., Davier, M., Davies, G. S., Daw, E. 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Astropart. Phys (API, FNWI)
- Subjects
Radio Transients ,[PHYS.ASTR.HE]Physics [physics]/Astrophysics [astro-ph]/High Energy Astrophysical Phenomena [astro-ph.HE] ,Nuclear and High Energy Physics ,Astronomy ,Astrophysics::High Energy Astrophysical Phenomena ,detection ,FOS: Physical sciences ,Gravitational Wave ,Astrophysics ,Astrophysics::Cosmology and Extragalactic Astrophysics ,01 natural sciences ,Coincidence ,GAMMA-RAY BURST ,ENERGY ,Pulsar ,Settore FIS/05 - Astronomia e Astrofisica ,Gravitational Waves, Radio Transients ,0103 physical sciences ,Binary star ,coincidence ,010303 astronomy & astrophysics ,QC ,QB ,Physics ,High Energy Astrophysical Phenomena (astro-ph.HE) ,Gravitational Waves ,PLASMA ,010308 nuclear & particles physics ,Gravitational wave ,ORIGIN ,Settore FIS/01 - Fisica Sperimentale ,Green Bank Telescope ,Astrophysics::Instrumentation and Methods for Astrophysics ,[ PHYS.ASTR.HE ] Physics [physics]/Astrophysics [astro-ph]/High Energy Astrophysical Phenomena [astro-ph.HE] ,PULSARS ,LIGO ,PULSES ,Neutron star ,Physics and Astronomy ,ComputingMethodologies_DOCUMENTANDTEXTPROCESSING ,GW ,Gamma-ray burst ,Astrophysics - High Energy Astrophysical Phenomena - Abstract
Copyright © 2016 American Physical Society and reproduced in accordance with the publisher copyright policy, We present an archival search for transient gravitational-wave bursts in coincidence with 27 single-pulse triggers from Green Bank Telescope pulsar surveys, using the LIGO, Virgo, and GEO interferometer network. We also discuss a check for gravitational-wave signals in coincidence with Parkes fast radio bursts using similar methods. Data analyzed in these searches were collected between 2007 and 2013. Possible sources of emission of both short-duration radio signals and transient gravitational-wave emission include starquakes on neutron stars, binary coalescence of neutron stars, and cosmic string cusps. While no evidence for gravitational-wave emission in coincidence with these radio transients was found, the current analysis serves as a prototype for similar future searches using more sensitive second-generation interferometers.
- Published
- 2016
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