Zobrazeno 1 - 10
of 184
pro vyhledávání: '"Thyagarajan, N"'
Autor:
Wang, Z., Bannister, K. W., Gupta, V., Deng, X., Pilawa, M., Tuthill, J., Bunton, J. D., Flynn, C., Glowacki, M., Jaini, A., Lee, Y. W. J., Lenc, E., Lucero, J., Paek, A., Radhakrishnan, R., Thyagarajan, N., Uttarkar, P., Wang, Y., Bhat, N. D. R., James, C. W., Moss, V. A., Murphy, Tara, Reynolds, J. E., Shannon, R. M., Spitler, L. G., Tzioumis, A., Caleb, M., Deller, A. T., Gordon, A. C., Marnoch, L., Ryder, S. D., Simha, S., Anderson, C. S., Ball, L., Brodrick, D., Cooray, F. R., Gupta, N., Hayman, D. B., Ng, A., Pearce, S. E., Phillips, C., Voronkov, M. A., Westmeier, T.
We present the first results from a new backend on the Australian Square Kilometre Array Pathfinder, the Commensal Realtime ASKAP Fast Transient COherent (CRACO) upgrade. CRACO records millisecond time resolution visibility data, and searches for dis
Externí odkaz:
http://arxiv.org/abs/2409.10316
We explore non-redundant aperture masking to derive the size and shape of the ALBA synchrotron light source at optical wavelengths using synchrotron radiation interferometry. We show that non-redundant masks are required due to phase fluctuations ari
Externí odkaz:
http://arxiv.org/abs/2406.02114
Autor:
Monsalve, R. A., Altamirano, C., Bidula, V., Bustos, R., Bye, C. H., Chiang, H. C., Diaz, M., Fernandez, B., Guo, X., Hendricksen, I., Hornecker, E., Lucero, F., Mani, H., McGee, F., Mena, F. P., Pessoa, M., Prabhakar, G., Restrepo, O., Sievers, J. L., Thyagarajan, N.
Publikováno v:
Monthly Notices of the Royal Astronomical Society, Volume 530, Issue 4, June 2024, Pages 4125-4147
The observation of the global 21 cm signal produced by neutral hydrogen gas in the intergalactic medium (IGM) during the Dark Ages, Cosmic Dawn, and Epoch of Reionization requires measurements with extremely well-calibrated wideband radiometers. We d
Externí odkaz:
http://arxiv.org/abs/2309.02996
Autor:
The International Pulsar Timing Array Collaboration, Agazie, G., Antoniadis, J., Anumarlapudi, A., Archibald, A. M., Arumugam, P., Arumugam, S., Arzoumanian, Z., Askew, J., Babak, S., Bagchi, M., Bailes, M., Nielsen, A. -S. Bak, Baker, P. T., Bassa, C. G., Bathula, A., Bécsy, B., Berthereau, A., Bhat, N. D. R., Blecha, L., Bonetti, M., Bortolas, E., Brazier, A., Brook, P. R., Burgay, M., Burke-Spolaor, S., Burnette, R., Caballero, R. N., Cameron, A., Case, R., Chalumeau, A., Champion, D. J., Chanlaridis, S., Charisi, M., Chatterjee, S., Chatziioannou, K., Cheeseboro, B. D., Chen, S., Chen, Z. -C., Cognard, I., Cohen, T., Coles, W. A., Cordes, J. M., Cornish, N. J., Crawford, F., Cromartie, H. T., Crowter, K., Curyło, M., Cutler, C. J., Dai, S., Dandapat, S., Deb, D., DeCesar, M. E., DeGan, D., Demorest, P. B., Deng, H., Desai, S., Desvignes, G., Dey, L., Dhanda-Batra, N., Di Marco, V., Dolch, T., Drachler, B., Dwivedi, C., Ellis, J. A., Falxa, M., Feng, Y., Ferdman, R. D., Ferrara, E. C., Fiore, W., Fonseca, E., Franchini, A., Freedman, G. E., Gair, J. R., Garver-Daniels, N., Gentile, P. A., Gersbach, K. A., Glaser, J., Good, D. C., Goncharov, B., Gopakumar, A., Graikou, E., Grießmeier, J. -M., Guillemot, L., Gültekin, K., Guo, Y. J., Gupta, Y., Grunthal, K., Hazboun, J. S., Hisano, S., Hobbs, G. B., Hourihane, S., Hu, H., Iraci, F., Islo, K., Izquierdo-Villalba, D., Jang, J., Jawor, J., Janssen, G. H., Jennings, R. J., Jessner, A., Johnson, A. D., Jones, M. L., Joshi, B. C., Kaiser, A. R., Kaplan, D. L., Kapur, A., Kareem, F., Karuppusamy, R., Keane, E. F., Keith, M. J., Kelley, L. Z., Kerr, M., Key, J. S., Kharbanda, D., Kikunaga, T., Klein, T. C., Kolhe, N., Kramer, M., Krishnakumar, M. A., Kulkarni, A., Laal, N., Lackeos, K., Lam, M. T., Lamb, W. G., Larsen, B. B., Lazio, T. J. W., Lee, K. J., Levin, Y., Lewandowska, N., Littenberg, T. B., Liu, K., Liu, T., Liu, Y., Lommen, A., Lorimer, D. R., Lower, M. E., Luo, J., Luo, R., Lynch, R. S., Lyne, A. G., Ma, C. -P., Maan, Y., Madison, D. R., Main, R. A., Manchester, R. N., Mandow, R., Mattson, M. A., McEwen, A., McKee, J. W., McLaughlin, M. A., McMann, N., Meyers, B. W., Meyers, P. M., Mickaliger, M. B., Miles, M., Mingarelli, C. M. F., Mitridate, A., Natarajan, P., Nathan, R. S., Ng, C., Nice, D. J., Niţu, I. C., Nobleson, K., Ocker, S. K., Olum, K. D., Osłowski, S., Paladi, A. K., Parthasarathy, A., Pennucci, T. T., Perera, B. B. P., Perrodin, D., Petiteau, A., Petrov, P., Pol, N. S., Porayko, N. K., Possenti, A., Prabu, T., Leclere, H. Quelquejay, Radovan, H. A., Rana, P., Ransom, S. M., Ray, P. S., Reardon, D. J., Rogers, A. F., Romano, J. D., Russell, C. J., Samajdar, A., Sanidas, S. A., Sardesai, S. C., Schmiedekamp, A., Schmiedekamp, C., Schmitz, K., Schult, L., Sesana, A., Shaifullah, G., Shannon, R. M., Shapiro-Albert, B. J., Siemens, X., Simon, J., Singha, J., Siwek, M. S., Speri, L., Spiewak, R., Srivastava, A., Stairs, I. H., Stappers, B. W., Stinebring, D. R., Stovall, K., Sun, J. P., Surnis, M., Susarla, S. C., Susobhanan, A., Swiggum, J. K., Takahashi, K., Tarafdar, P., Taylor, J., Taylor, S. R., Theureau, G., Thrane, E., Thyagarajan, N., Tiburzi, C., Toomey, L., Turner, J. E., Unal, C., Vallisneri, M., van der Wateren, E., van Haasteren, R., Vecchio, A., Krishnan, V. Venkatraman, Verbiest, J. P. W., Vigeland, S. J., Wahl, H. M., Wang, S., Wang, Q., Witt, C. A., Wang, J., Wang, L., Wayt, K. E., Wu, Z., Young, O., Zhang, L., Zhang, S., Zhu, X. -J., Zic, A.
The Australian, Chinese, European, Indian, and North American pulsar timing array (PTA) collaborations recently reported, at varying levels, evidence for the presence of a nanohertz gravitational wave background (GWB). Given that each PTA made differ
Externí odkaz:
http://arxiv.org/abs/2309.00693
We develop a new process of image plane self-calibration for interferometric imaging data. The process is based on Shape-Orientation-Size (SOS) conservation for the principal triangle in an image generated from the three fringes made from a triad of
Externí odkaz:
http://arxiv.org/abs/2210.17290
Autor:
Charles, N., Bernardi, G., Bester, H. L., Smirnov, O. M., Carilli, C., Keller, P. M., Kern, N., Nikolic, B., Thyagarajan, N., Acedo, E. de Lera, Fagnoni, N., Santos, M. G.
The 21~cm transition from neutral Hydrogen promises to be the best observational probe of the Epoch of Reionisation. The main difficulty in measuring the 21 cm signal is the presence of bright foregrounds that require very accurate interferometric ca
Externí odkaz:
http://arxiv.org/abs/2112.12765
Autor:
Goncharov, Boris, Shannon, R. M., Reardon, D. J., Hobbs, G., Zic, A., Bailes, M., Curylo, M., Dai, S., Kerr, M., Lower, M. E., Manchester, R. N., Mandow, R., Middleton, H., Miles, M. T., Parthasarathy, A., Thrane, E., Thyagarajan, N., Xue, X., Zhu, X. J., Cameron, A. D., Feng, Y., Luo, R., Russell, C. J., Sarkissian, J., Spiewak, R., Wang, S., Wang, J. B., Zhang, L., Zhang, S.
Publikováno v:
The Astrophysical Journal Letters, Volume 917, Number 2 (2021)
A nanohertz-frequency stochastic gravitational-wave background can potentially be detected through the precise timing of an array of millisecond pulsars. This background produces low-frequency noise in the pulse arrival times that would have a charac
Externí odkaz:
http://arxiv.org/abs/2107.12112
Autor:
Reardon, D. J., Shannon, R. M., Cameron, A. D., Goncharov, B., Hobbs, G. B., Middleton, H., Shamohammadi, M., Thyagarajan, N., Bailes, M., Bhat, N. D. R., Dai, S., Kerr, M., Manchester, R. N., Russell, C. J., Spiewak, R., Wang, J. B., Zhu, X. J.
The main goal of pulsar timing array experiments is to detect correlated signals such as nanohertz-frequency gravitational waves. Pulsar timing data collected in dense monitoring campaigns can also be used to study the stars themselves, their binary
Externí odkaz:
http://arxiv.org/abs/2107.04609
Searching for gravitational wave bursts from cosmic string cusps with the Parkes Pulsar Timing Array
Autor:
Yonemaru, N., Kuroyanagi, S., Hobbs, G., Takahashi, K., Zhu, X. -J., Coles, W. A., Dai, S., Howard, E., Manchester, R., Reardon, D., Russell, C., Shannon, R., Thyagarajan, N., Spiewak, R., Wang, J. -B.
Cosmic strings are potential gravitational wave (GW) sources that can be probed by pulsar timing arrays (PTAs). In this work we develop a detection algorithm for a GW burst from a cusp on a cosmic string, and apply it to Parkes PTA data. We find four
Externí odkaz:
http://arxiv.org/abs/2011.13490
Autor:
Goncharov, Boris, Reardon, D. J., Shannon, R. M., Zhu, Xing-Jiang, Thrane, Eric, Bailes, M., Bhat, N. D. R., Dai, S., Hobbs, G., Kerr, M., Manchester, R. N., Osłowski, S., Parthasarathy, A., Russell, C. J., Spiewak, R., Thyagarajan, N., Wang, J. B.
Pulsar timing array projects measure the pulse arrival times of millisecond pulsars for the primary purpose of detecting nanohertz-frequency gravitational waves. The measurements include contributions from a number of astrophysical and instrumental p
Externí odkaz:
http://arxiv.org/abs/2010.06109