An insight into chromatic behaviour of jitter in pulsars and its modelling: A case study of PSR J0437$-$4715

Autor: Kulkarni, A. D., Shannon, R. M., Reardon, D. J., Miles, M. T., Bailes, M., Shamohammadi, M.

Pulse-to-pulse profile shape variations introduce correlations in pulsar times of arrival (TOAs) across radio frequency measured at the same observational epoch. This leads to a broadband noise in excess of radiometer noise, which is termed pulse jit

Externí odkaz: http://arxiv.org/abs/2401.03660

The MeerTime Pulsar Timing Array -- A Census of Emission Properties and Timing Potential

Autor: Spiewak, R., Bailes, M., Miles, M. T., Parthasarathy, A., Reardon, D. J., Shamohammadi, M., Shannon, R. M., Bhat, N. D. R., Buchner, S., Cameron, A. D., Camilo, F., Geyer, M., Johnston, S., Karastergiou, A., Keith, M., Kramer, M., Serylak, M., van Straten, W., Theureau, G., Krishnan, V. Venkatraman

MeerTime is a five-year Large Survey Project to time pulsars with MeerKAT, the 64-dish South African precursor to the Square Kilometre Array. The science goals for the programme include timing millisecond pulsars (MSPs) to high precision (< 1 $\mu$s)

Externí odkaz: http://arxiv.org/abs/2204.04115

The MeerKAT Telescope as a Pulsar Facility: System verification and early science results from MeerTime

Autor: Bailes, M., Jameson, A., Abbate, F., Barr, E. D., Bhat, N. D. R., Bondonneau, L., Burgay, M., Buchner, S. J., Camilo, F., Champion, D. J., Cognard, I., Demorest, P. B., Freire, P. C. C., Gautam, T., Geyer, M., Griessmeier, J. M., Guillemot, L., Hu, H., Jankowski, F., Johnston, S., Karastergiou, A., Karuppusamy, R., Kaur, D., Keith, M. J., Kramer, M., van Leeuwen, J., Lower, M. E., Maan, Y., McLaughlin, M. A., Meyers, B. W., Osłowski, S., Oswald, L. S., Parthasarathy, A., Pennucci, T., Posselt, B., Possenti, A., Ransom, S. M., Reardon, D. J., Ridolfi, A., Schollar, C. T. G., Serylak, M., Shaifullah, G., Shamohammadi, M., Shannon, R. M., Sobey, C., Song, X., Spiewak, R., Stairs, I. H., Stappers, B. W., van Straten, W., Szary, A., Theureau, G., Krishnan, V. Venkatraman, Weltevrede, P., Wex, N., Abbott, T. D., Adams, G. B., Burger, J. P., Gamatham, R. R. G., Gouws, M., Horn, D. M., Hugo, B., Joubert, A. F., Manley, J. R., McAlpine, K., Passmoor, S. S., Peens-Hough, A., Ramudzuli, Z. R., Rust, A., Salie, S., Schwardt, L. C., Siebrits, R., Van Tonder, G., Van Tonder, V., Welz, M. G.

We describe system verification tests and early science results from the pulsar processor (PTUSE) developed for the newly-commissioned 64-dish SARAO MeerKAT radio telescope in South Africa. MeerKAT is a high-gain (~2.8 K/Jy) low-system temperature (~

Externí odkaz: http://arxiv.org/abs/2005.14366

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