Zobrazeno 1 - 10
of 783
pro vyhledávání: '"Abbate, F"'
Autor:
Abbate, F., Possenti, A., Ridolfi, A., Buchner, S., Geyer, M., Kramer, M., Zhang, L., Corongiu, A., Camilo, F., Bailes, M.
The eclipses seen in the radio emission of some pulsars can be invaluable to study the properties of the material from the companion stripped away by the pulsar. We present a study of six consecutive eclipses of PSR J0024-7204O in the globular cluste
Externí odkaz:
http://arxiv.org/abs/2407.15563
Autor:
Corongiu, A., Ridolfi, A., Abbate, F., Bailes, M., Possenti, A., Geyer, M., Manchester, R. N., Kramer, M., Freire, P. C. C., Burgay, M., Buchner, S., Camilo, F.
Publikováno v:
Journal: The Astrophysical Journal; Volume 972; Year 2024; Page 198
Millisecond pulsars are subject to accelerations in globular clusters (GCs) that manifest themselves in both the first and second spin period time derivatives, and can be used to explore the mass distribution of the potentials they inhabit. Here we r
Externí odkaz:
http://arxiv.org/abs/2407.03271
Autor:
Padmanabh, P. V., Ransom, S. M., Freire, P. C. C., Ridolfi, A., Taylor, J. D., Choza, C., Clark, C. J., Abbate, F., Bailes, M., Barr, E. D., Buchner, S., Burgay, M., DeCesar, M. E., Chen, W., Corongiu, A., Champion, D. J., Dutta, A., Geyer, M., Hessels, J. W. T., Kramer, M., Possenti, A., Stairs, I. H., Stappers, B. W., Krishnan, V. Venkatraman, Vleeschower, L., Zhang, L.
Publikováno v:
A&A 686, A166 (2024)
We report the discovery of ten new pulsars in the globular cluster Terzan 5 as part of the Transients and Pulsars with MeerKAT (TRAPUM) Large Survey Project. We observed Terzan 5 at L-band (856--1712 MHz) with the MeerKAT radio telescope for four hou
Externí odkaz:
http://arxiv.org/abs/2403.17799
Autor:
Vleeschower, L., Corongiu, A., Stappers, B. W., Freire, P. C. C., Ridolfi, A., Abbate, F., Ransom, S. M., Possenti, A., Padmanabh, P. V., Balakrishnan, V., Kramer, M., Krishnan, V. Venkatraman, Zhang, L., Bailes, M., Barr, E. D., Buchner, S., Chen, W.
Using MeerKAT, we have discovered three new millisecond pulsars (MSPs) in the bulge globular cluster M62: M62H, M62I, and M62J. All three are in binary systems, which means all ten known pulsars in the cluster are in binaries. M62H has a planetary-ma
Externí odkaz:
http://arxiv.org/abs/2403.12137
Autor:
Abbate, F., Ridolfi, A., Freire, P. C. C., Padmanabh, P. V., Balakrishnan, V., Buchner, S., Zhang, L., Kramer, M., Stappers, B. W., Barr, E. D., Chen, W., Champion, D., Ransom, S., Possenti, A.
Publikováno v:
A&A 680, A47 (2023)
We present the results of observations aimed at discovering and studying pulsars in the core-collapsed globular cluster (GC) NGC 6522 performed by the MeerTIME and TRAPUM Large Survey Project with the MeerKAT telescope. We have discovered two new iso
Externí odkaz:
http://arxiv.org/abs/2310.03800
Autor:
Abbate, F., Noutsos, A., Desvignes, G., Wharton, R. S., Torne, P., Kramer, M., Eatough, R. P., Karuppusamy, R., Liu, K., Shao, L., Wongphechauxsorn, J.
We report the results of an observational campaign using the Effelsberg 100-m telescope of the pulsars J1746$-$2849, J1746$-$2850, J1746$-$2856 and J1745$-$2912 located in the Central Molecular Zone (CMZ) close to the Galactic centre in order to stud
Externí odkaz:
http://arxiv.org/abs/2307.03230
Autor:
Corongiu, A., Krishnan, V. Venkatraman, Freire, P. C. C., Kramer, M., Possenti, A., Geyer, M., Ridolfi, A., Abbate, F., Bailes, M., Barr, E. D., Balakrishnan, V., Buchner, S., Champion, D. J., Chen, W., Hugo, B. V., Karastergiou, A., Lyne, A. G., Manchester, R. N., Padmanabh, P. V., Parthasarathy, A., Ransom, S. M., Sarkissian, J. M., Serylak, M., van Straten, W.
Publikováno v:
A&A 671, A72 (2023)
PSRJ1910-5959A (J1910A) is a binary millisecond pulsar in a 0.837 day circular orbit around a helium white dwarf (HeWD) companion. This pulsar is located 6.3 arcmin away from the centre of the globular cluster NGC6752. Given the large offset, the ass
Externí odkaz:
http://arxiv.org/abs/2301.04055
Autor:
Chen, W., Freire, P. C. C., Ridolfi, A., Barr, E. D., Stappers, B., Kramer, M., Possenti, A., Ransom, S. M., Levin, L., Breton, R. P., Burgay, M., Camilo, F., Buchner, S., Champion, D. J., Abbate, F., Krishnan, V. Venkatraman, Padmanabh, P. V., Gautam, T., Vleeschower, L., Geyer, M., Grießmeier, J-M., Men, Y. P., Balakrishnan, V., Bezuidenhout, M. C.
The most massive globular cluster in our Galaxy, Omega Centauri, is an interesting target for pulsar searches, because of its multiple stellar populations and the intriguing possibility that it was once the nucleus of a galaxy that was absorbed into
Externí odkaz:
http://arxiv.org/abs/2301.03864
Autor:
Abbate, F., Possenti, A., Ridolfi, A., Krishnan, V. Venkatraman, Buchner, S., Barr, E. D., Bailes, M., Kramer, M., Cameron, A., Parthasarathy, A., van Straten, W., Chen, W., Camilo, F., Padmanabh, P. V., Mao, S. A., Freire, P. C. C., Ransom, S. M., Vleeschower, L., Geyer, M., Zhang, L.
We present the polarization profiles of 22 pulsars in the globular cluster 47 Tucanae using observations from the MeerKAT radio telescope at UHF-band (544-1088 MHz) and report precise values of dispersion measure (DM) and rotation measure (RM). We us
Externí odkaz:
http://arxiv.org/abs/2211.03815
Autor:
Abbate, F., Ridolfi, A., Barr, E. D., Buchner, S., Burgay, M., Champion, D. J., Chen, W., Freire, P. C. C., Gautam, T., Grießmeier, J. M., Künkel, L., Kramer, M., Padmanabh, P. V., Possenti, A., Ransom, S., Serylak, M., Stappers, B. W., Krishnan, V. Venkatraman, Behrend, J., Breton, R. P., Levin, L., Men, Y.
We report 4 new pulsars discovered in the core-collapsed globular cluster (GC) NGC 6624 by the TRAPUM Large Survey Project with the MeerKAT telescope. All of the new pulsars found are isolated. PSR J1823$-$3021I and PSR J1823$-$3021K are millisecond
Externí odkaz:
http://arxiv.org/abs/2204.05334