A pulsar in a binary with a compact object in the mass gap between neutron stars and black holes
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arXiv
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| Natura: | Preprint |
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2024
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| author | Barr, Ewan D. Dutta, Arunima Freire, Paulo C. C. Cadelano, Mario Gautam, Tasha Kramer, Michael Pallanca, Cristina Ransom, Scott M. Ridolfi, Alessandro Stappers, Benjamin W. Tauris, Thomas M. Krishnan, Vivek Venkatraman Wex, Norbert Bailes, Matthew Behrend, Jan Buchner, Sarah Burgay, Marta Chen, Weiwei Champion, David J. Chen, C. -H. Rosie Corongiu, Alessandro Geyer, Marisa Men, Y. P. Padmanabh, Prajwal V. Possenti, Andrea |
| author_facet | Barr, Ewan D. Dutta, Arunima Freire, Paulo C. C. Cadelano, Mario Gautam, Tasha Kramer, Michael Pallanca, Cristina Ransom, Scott M. Ridolfi, Alessandro Stappers, Benjamin W. Tauris, Thomas M. Krishnan, Vivek Venkatraman Wex, Norbert Bailes, Matthew Behrend, Jan Buchner, Sarah Burgay, Marta Chen, Weiwei Champion, David J. Chen, C. -H. Rosie Corongiu, Alessandro Geyer, Marisa Men, Y. P. Padmanabh, Prajwal V. Possenti, Andrea |
| contents | Among the compact objects observed in gravitational wave merger events a few have masses in the gap between the most massive neutron stars (NSs) and least massive black holes (BHs) known. Their nature and the formation of their merging binaries are not well understood. We report on pulsar timing observations using the Karoo Array Telescope (MeerKAT) of PSR J0514-4002E, an eccentric binary millisecond pulsar in the globular cluster NGC 1851 with a total binary mass of $3.887 \pm 0.004$ solar masses. The companion to the pulsar is a compact object and its mass (between $2.09$ and $2.71$ solar masses, 95% confidence interval) is in the mass gap, so it either is a very massive NS or a low-mass BH. We propose the companion was formed by a merger between two earlier NSs. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2401_09872 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | A pulsar in a binary with a compact object in the mass gap between neutron stars and black holes Barr, Ewan D. Dutta, Arunima Freire, Paulo C. C. Cadelano, Mario Gautam, Tasha Kramer, Michael Pallanca, Cristina Ransom, Scott M. Ridolfi, Alessandro Stappers, Benjamin W. Tauris, Thomas M. Krishnan, Vivek Venkatraman Wex, Norbert Bailes, Matthew Behrend, Jan Buchner, Sarah Burgay, Marta Chen, Weiwei Champion, David J. Chen, C. -H. Rosie Corongiu, Alessandro Geyer, Marisa Men, Y. P. Padmanabh, Prajwal V. Possenti, Andrea High Energy Astrophysical Phenomena General Relativity and Quantum Cosmology Nuclear Theory Among the compact objects observed in gravitational wave merger events a few have masses in the gap between the most massive neutron stars (NSs) and least massive black holes (BHs) known. Their nature and the formation of their merging binaries are not well understood. We report on pulsar timing observations using the Karoo Array Telescope (MeerKAT) of PSR J0514-4002E, an eccentric binary millisecond pulsar in the globular cluster NGC 1851 with a total binary mass of $3.887 \pm 0.004$ solar masses. The companion to the pulsar is a compact object and its mass (between $2.09$ and $2.71$ solar masses, 95% confidence interval) is in the mass gap, so it either is a very massive NS or a low-mass BH. We propose the companion was formed by a merger between two earlier NSs. |
| title | A pulsar in a binary with a compact object in the mass gap between neutron stars and black holes |
| topic | High Energy Astrophysical Phenomena General Relativity and Quantum Cosmology Nuclear Theory |
| url | https://arxiv.org/abs/2401.09872 |