Zobrazeno 1 - 10
of 1 546
pro vyhledávání: '"Backer, D."'
Autor:
ATA GROUP, Atkinson, Shannon, Backer, D. C., Backus, P. R., Barott, William, Bauermeister, Amber, Blitz, Leo, Bock, D. C. -J., Bower, Geoffrey C., Bradford, Tucker, Cheng, Calvin, Croft, Steve, Dexter, Matt, Dreher, John, Engargiola, Greg, Fields, Ed, Heiles, Carl, Helfer, Tamara, Jordan, Jane, Jorgensen, Susan, Kilsdonk, Tom, Gutierrez-Kraybill, Colby, Keating, Garrett, Law, Casey, Lugten, John, MacMahon, D. H. E., McMahon, Peter, Milgrome, Oren, Siemion, Andrew, Smolek, Ken, Thornton, Douglas, Pierson, Tom, Randall, Karen, Ross, John, Shostak, Seth, Tarter, J. C., Urry, Lynn, Werthimer, Dan, Williams, Peter K. G., Whysong, David, Harp, G. R., Ackermann, R. F., Nadler, Z. J., Blair, Samantha K., Davis, M. M., Wright, M. C. H., Forster, J. R., DeBoer, D. R., Welch, W. J.
Publikováno v:
IEEE Transactions on Antennas and Propagation, 59 (2011) p. 2004
The Allen Telescope Array (ATA) is a cm-wave interferometer in California, comprising 42 antenna elements with 6-m diameter dishes. We characterize the antenna optical accuracy using two-antenna interferometry and radio holography. The distortion of
Externí odkaz:
http://arxiv.org/abs/1210.8246
Autor:
Law, C. J., Jones, G., Backer, D. C., Barott, W. C., Bower, G. C., Gutierrez-Kraybill, C., Williams, P. K. G., Werthimer, D.
We demonstrate a signal processing concept for imaging the sky at millisecond rates with radio interferometers. The "Pocket Correlator" (PoCo) correlates the signals from multiple elements of a radio interferometer fast enough to image brief, dispers
Externí odkaz:
http://arxiv.org/abs/1106.4876
Autor:
Law, C. J., Gaensler, B. M., Bower, G. C., Backer, D. C., Bauermeister, A., Croft, S., Forster, R., Gutierrez-Kraybill, C., Harvey-Smith, L., Heiles, C., Hull, C., Keating, G., MacMahon, D., Whysong, D., Williams, P. K. G., Wright, M.
We have observed 37 bright, polarized radio sources with the Allen Telescope Array (ATA) to present a novel analysis of their Faraday rotation properties. Each source was observed during the commissioning phase with 2 to 4 100-MHz bands at frequencie
Externí odkaz:
http://arxiv.org/abs/1012.0945
Autor:
Champion, D. J., Hobbs, G. B., Manchester, R. N., Edwards, R. T., Backer, D. C., Bailes, M., Bhat, N. D. R., Burke-Spolaor, S., Coles, W., Demorest, P. B., Ferdman, R. D., Folkner, W. M., Hotan, A. W., Kramer, M., Lommen, A. N., Nice, D. J., Purver, M. B., Sarkissian, J. M., Stairs, I. H., van Straten, W., Verbiest, J. P. W., Yardley, D. R. B.
High-precision pulsar timing relies on a solar-system ephemeris in order to convert times of arrival (TOAs) of pulses measured at an observatory to the solar system barycenter. Any error in the conversion to the barycentric TOAs leads to a systematic
Externí odkaz:
http://arxiv.org/abs/1008.3607
Autor:
Hobbs, G., Archibald, A., Arzoumanian, Z., Backer, D., Bailes, M., Bhat, N. D. R., Burgay, M., Burke-Spolaor, S., Champion, D., Cognard, I., Coles, W., Cordes, J., Demorest, P., Desvignes, G., Ferdman, R. D., Finn, L., Freire, P., Gonzalez, M., Hessels, J., Hotan, A., Janssen, G., Jenet, F., Jessner, A., Jordan, C., Kaspi, V., Kramer, M., Kondratiev, V., Lazio, J., Lazaridis, K., Lee, K. J., Levin, Y., Lommen, A., Lorimer, D., Lynch, R., Lyne, A., Manchester, R., McLaughlin, M., Nice, D., Oslowski, S., Pilia, M., Possenti, A., Purver, M., Ransom, S., Reynolds, J., Sanidas, S., Sarkissian, J., Sesana, A., Shannon, R., Siemens, X., Stairs, I., Stappers, B., Stinebring, D., Theureau, G., van Haasteren, R., van Straten, W., Verbiest, J. P. W., Yardley, D. R. B., You, X. P.
Publikováno v:
Class.Quant.Grav.27:084013,2010
The International Pulsar Timing Array project combines observations of pulsars from both Northern and Southern hemisphere observatories with the main aim of detecting ultra-low frequency (~10^-9 to 10^-8 Hz) gravitational waves. Here we introduce the
Externí odkaz:
http://arxiv.org/abs/0911.5206
Autor:
Jenet, F., Finn, L. S., Lazio, J., Lommen, A., McLaughlin, M., Stairs, I., Stinebring, D., Verbiest, J., Archibald, A., Arzoumanian, Z., Backer, D., Cordes, J., Demorest, P., Ferdman, R., Freire, P., Gonzalez, M., Kaspi, V., Kondratiev, V., Lorimer, D., Lynch, R., Nice, D., Ransom, S., Shannon, R., Siemens, X.
The North American Nanohertz Observatory for Gravitational Waves (NANOGrav) is a consortium of astronomers whose goal is the creation of a galactic scale gravitational wave observatory sensitive to gravitational waves in the nHz-microHz band. It is j
Externí odkaz:
http://arxiv.org/abs/0909.1058
Publikováno v:
MNRAS 395, 333 (2009)
We report the first attempt to observe the secondary eclipse of a transiting extra-solar planet at radio wavelengths. We observed HD 189733 b with the Robert C. Byrd Green Bank Telescope of the NRAO over about 5.5 hours before, during and after secon
Externí odkaz:
http://arxiv.org/abs/0901.2344
Publikováno v:
Astrophys.J.695:1070-1081,2009
The Galactic Center lobe is a degree-tall shell seen in radio continuum images of the Galactic center (GC) region. If it is actually located in the GC region, formation models would require massive energy input (e.g., starburst or jet) to create it.
Externí odkaz:
http://arxiv.org/abs/0901.1480
Publikováno v:
Acta Anaesthesiologica Belgica; May2024, Vol. 75 Issue 2, p125-138, 14p
Autor:
Champion, D. J., Ransom, S. M., Lazarus, P., Camilo, F., Bassa, C., Kaspi, V. M., Nice, D. J., Freire, P. C. C., Stairs, I. H., van Leeuwen, J., Stappers, B. W., Cordes, J. M., Hessels, J. W. T., Lorimer, D. R., Arzoumanian, Z., Backer, D. C., Bhat, N. D. R., Chatterjee, S., Cognard, I., Deneva, J. S., Faucher-Giguere, C. -A., Gaensler, B. M., Han, J. L., Jenet, F. A., Kasian, L., Kondratiev, V. I., Kramer, M., Lazio, J., McLaughlin, M. A., Venkataraman, A., Vlemmings, W.
Binary pulsar systems are superb probes of stellar and binary evolution and the physics of extreme environments. In a survey with the Arecibo telescope, we have found PSR J1903+0327, a radio pulsar with a rotational period of 2.15 ms in a highly ecce
Externí odkaz:
http://arxiv.org/abs/0805.2396