Comparing recent PTA results on the nanohertz stochastic gravitational wave background

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

Parkes transient events: I. Database of single pulses, initial results and missing FRBs

Autor: Zhang, S. -B., Hobbs, G., Russell, C. J., Toomey, L., Dai, S., Dempsey, J., Manchester, R. N., Johnston, S., Staveley-Smith, L., Wu, X. -F., Li, D., Yang, Y. -Y., Wang, S. -Q., Qiu, H., Luo, R., Wang, C., Zhang, C., Zhang, L., Mandow, R.

A large number of observations from the Parkes 64\,m-diameter radio telescope, recorded with high time resolution, are publicly available. We have re-processed all of the observations obtained during the first four years (from 1997 to 2001) of the Pa

Externí odkaz: http://arxiv.org/abs/2004.04601

An ultra-wide bandwidth (704 to 4032 MHz) receiver for the Parkes radio telescope

Autor: Hobbs, G., Manchester, R. N., Dunning, A., Jameson, A., Roberts, P., George, D., Green, J. A., Tuthill, J., Toomey, L., Kaczmarek, J. F., Mader, S., Marquarding, M., Ahmed, A., Amy, S. W., Bailes, M., Beresford, R., Bhat, N. D. R., Bock, D. C. -J., Bourne, M., Bowen, M., Brothers, M., Cameron, A. D., Carretti, E., Carter, N., Castillo, S., Chekkala, R., Cheng, W., Chung, Y., Craig, D. A., Dai, S., Dawson, J. R., Dempsey, J., Doherty, P., Dong, B., Edwards, P. G., Ergesh, T., Gao, X. Y., Han, J. L., Hayman, D. B., Indermuehle, B. T., Jeganathan, K., Johnston, S., Kanoniuk, H., Kesteven, M., Kramer, M., Leach, M., Mcintyre, V. J., Moss, V. A., Oslowski, S., Phillips, C. J., Pope, N. C., Preisig, B., Price, D. C., Reeves, K., Reilly, L., Reynolds, J. E., Robishaw, T., Roush, P., Ruckley, T., Sadler, E. M., Sarkissian, J., Severs, S., Shannon, R. M., Smart, K. W., Smith, M., Sobey, S. L. Smith. C., Staveley-Smith, L., Tzioumis, A. K., van Straten, W., Wang, N., Wen, L., Whiting, M. T.

We describe an ultra-wide-bandwidth, low-frequency receiver ("UWL") recently installed on the Parkes radio telescope. The receiver system provides continuous frequency coverage from 704 to 4032 MHz. For much of the band (~60%) the system temperature

Externí odkaz: http://arxiv.org/abs/1911.00656

Commensal discovery of four Fast Radio Bursts during Parkes Pulsar Timing Array observations

Autor: Osłowski, S., Shannon, R. M., Ravi, V., Kaczmarek, J. F., Zhang, S., Hobbs, G., Bailes, M., Russell, C. J., van Straten, W., James, C. W., Jameson, A., Mahony, E. K., Kumar, P., Andreoni, I., Bhat, N. D. R., Burke-Spolaor, S., Dai, S., Dempsey, J., Kerr, M., Manchester, R. N., Parthasarathy, A., Reardon, D., Sarkissian, J. M., Spiewak, R., Toomey, L., Wang, J. -B., Zhang, L., Zhu, X. -J.

The Parkes Pulsar Timing Array (PPTA) project monitors two dozen millisecond pulsars (MSPs) in order to undertake a variety of fundamental physics experiments using the Parkes 64m radio telescope. Since June 2017 we have been undertaking commensal se

Externí odkaz: http://arxiv.org/abs/1906.09793

Studying the solar system with the International Pulsar Timing Array

Autor: Caballero, R. N., Guo, Y. J., Lee, K. J., Lazarus, P., Champion, D. J., Desvignes, G., Kramer, M., Plant, K., Arzoumanian, Z., Bailes, M., Bassa, C. G., Bhat, N. D. R., Brazier, A., Burgay, M., Burke-Spolaor, S., Chamberlin, S. J., Chatterjee, S., Cognard, I., Cordes, J. M., Dai, S., Demorest, P., Dolch, T., Ferdman, R. D., Fonseca, E., Gair, J. R., Garver-Daniels, N., Gentile, P., Gonzalez, M. E., Graikou, E., Guillemot, L., Hobbs, G., Janssen, G. H., Karuppusamy, R., Keith, M. J., Kerr, M., Lam, M. T., Lasky, P. D., Lazio, T. J. W., Levin, L., Liu, K., Lommen, A. N., Lorimer, D. R., Lynch, R. S., Madison, D. R., Manchester, R. N., McKee, J. W., McLaughlin, M. A., McWilliams, S. T., Mingarelli, C. M. F., Nice, D. J., Osłowski, S., Palliyaguru, N. T., Pennucci, T. T., Perera, B. B. P., Perrodin, D., Possenti, A., Ransom, S. M., Reardon, D. J., Sanidas, S. A., Sesana, A., Shaifullah, G., Shannon, R. M., Siemens, X., Simon, J., Spiewak, R., Stairs, I., Stappers, B., Stinebring, D. R., Stovall, K., Swiggum, J. K., Taylor, S. R., Theureau, G., Tiburzi, C., Toomey, L., van Haasteren, R., van Straten, W., Verbiest, J. P. W., Wang, J. B., Zhu, X. J., Zhu, W. W.

Pulsar-timing analyses are sensitive to errors in the solar-system ephemerides (SSEs) that timing models utilise to estimate the location of the solar-system barycentre, the quasi-inertial reference frame to which all recorded pulse times-of-arrival

Externí odkaz: http://arxiv.org/abs/1809.10744