Zobrazeno 1 - 10
of 106
pro vyhledávání: '"Stappers, B."'
Autor:
Main, R. A., Antoniadis, J., Chen, S., Cognard, I., Hu, H., Jang, J., Karuppusamy, R., Kramer, M., Liu, K., Liu, Y., Mall, G., McKee, J. W., Mickaliger, M. B., Perrodin, D., Sanidas, S. A., Stappers, B. W., Sprenger, T., Wucknitz, O., Bassa, C. G., Burgay, M., Concu, R., Gaikwad, M., Janssen, G. H., Lee, K. J., Melis, A., Pilia, M., Possenti, A., Wang, L., Zhu, W. W.
We present the first large sample of scintillation arcs in millisecond pulsars, analysing 12 sources observed with the Large European Array for Pulsars (LEAP), and the Effelsberg 100\,m telescope. We estimate the delays from multipath propagation, me
Externí odkaz:
http://arxiv.org/abs/2306.13462
Autor:
Dhillon, V. S., Kennedy, M. R., Breton, R. P., Clark, C. J., Sánchez, D. Mata, Voisin, G., Breedt, E., Brown, A. J., Dyer, M. J., Green, M. J., Kerry, P., Littlefair, S. P., Marsh, T. R., Parsons, S. G., Pelisoli, I., Sahman, D. I., Wild, J. F., van Kerkwijk, M. H., Stappers, B. W.
We present simultaneous, multi-colour optical light curves of the companion star to the black-widow pulsar PSR J2051-0827, obtained approximately 10 years apart using ULTRACAM and HiPERCAM, respectively. The ULTRACAM light curves confirm the previous
Externí odkaz:
http://arxiv.org/abs/2208.09249
Autor:
Sengar, R., Balakrishnan, V., Stevenson, S., Bailes, M., Barr, E. D., Bhat, N. D. R., Burgay, M., Bernadich, M. C. i, Cameron, A. D., Champion, D. J., Chen, W., Flynn, C. M. L., Jameson, A., Johnston, S., Keith, M. J., Kramer, M., Morello, V., Ng, C., Possenti, A., Stappers, B., Shannon, R. M., van Straten, W., Wongphechauxsorn, J.
The observable population of double neutron star (DNS) systems in the Milky Way allow us to understand the nature of supernovae and binary stellar evolution. Until now, all DNS systems in wide orbits ($ P_{\textrm{orb}}>$ 1~day) have been found to ha
Externí odkaz:
http://arxiv.org/abs/2204.06869
Autor:
Vleeschower, L., Stappers, B. W., Bailes, M., Barr, E. D., Kramer, M., Ransom, S., Ridolfi, A., Krishnan, V. Venkatraman, Possenti, A., Keith, M. J., Burgay, M., Freire, P. C. C., Spiewak, R., Champion, D. J., Bezuidenhout, M. C., Niţu, I. C., Chen, W., Parthasarathy, A., DeCesar, M. E., Buchner, S., Stairs, I. H., Hessels, J. W. T.
Using the MeerKAT radio telescope, a series of observations have been conducted to time the known pulsars and search for new pulsars in the globular cluster NGC 6440. As a result, two pulsars have been discovered, NGC 6440G and NGC 6440H, one of whic
Externí odkaz:
http://arxiv.org/abs/2204.00086
Autor:
Sobey, C., Bassa, C. G., O'Sullivan, S. P., Callingham, J. R., Tan, C. M., Hessels, J. W. T., Kondratiev, V. I., Stappers, B. W., Tiburzi, C., Heald, G., Shimwell, T., Breton, R. P., Kirwan, M., Vedantham, H. K., Carretti, Ettore, Grießmeier, J. -M., Haverkorn, M., Karastergiou, A.
Publikováno v:
A&A 661, A87 (2022)
Discovering radio pulsars, particularly millisecond pulsars (MSPs), is important for a range of astrophysical applications, such as testing theories of gravity or probing the magneto-ionic interstellar medium. We aim to discover pulsars that may have
Externí odkaz:
http://arxiv.org/abs/2203.08331
Autor:
Driessen, L. N., Williams, D. R. A., McDonald, I., Stappers, B. W., Buckley, D. A. H., Fender, R. P., Woudt, P. A.
We report the detection of radio emission from the known X-ray flaring star EXO 040830$-$7134.7 during MeerKAT observations of the nearby cataclysmic variable VW Hydri. We have three epochs of MeerKAT observations, where the star is not detected in t
Externí odkaz:
http://arxiv.org/abs/2111.13283
Autor:
McKee, J. W., Freire, P. C. C., Berezina, M., Champion, D. J., Cognard, I., Graikou, E., Guillemot, L., Keith, M. J., Kramer, M., Lyne, A. G., Stappers, B. W., Tauris, T. M., Theureau, G.
We present the results of a timing analysis undertaken with the goal of obtaining an improved mass measurement of the recycled pulsar J2045+3633. Using regular high-cadence observations with the Effelsberg, Nan\c{c}ay, and Lovell radio telescopes, to
Externí odkaz:
http://arxiv.org/abs/2009.12283
Autor:
Hewitt, D. M., Pretorius, M. L., Woudt, P. A., Tremou, E., Miller-Jones, J. C. A., Knigge, C., Segura, N. Castro, Williams, D. R. A., Fender, R. P., Armstrong, R., Groot, P., Heywood, I., Horesh, A., van der Horst, A. J., Koerding, E., McBride, V. A., Mooley, K. P., Rowlinson, A., Stappers, B., Wijers, R. A. M. J.
We present the results of MeerKAT radio observations of eleven nearby novalike cataclysmic variables. We have detected radio emission from IM Eri, RW Sex, V3885 Sgr and V603 Aql. While RW Sex, V3885 Sgr and V603 Aql had been previously detected, this
Externí odkaz:
http://arxiv.org/abs/2006.07918
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
We model the present day, observable, normal radio pulsar population of the Small Magellanic Cloud (SMC). The pulsars are generated with SeBa, a binary population synthesis code that evolves binaries and the constituent stellar objects up to remnant
Externí odkaz:
http://arxiv.org/abs/2003.01969