WeChat Mini Program
Old Version Features

A Pulsar in a Binary with a Compact Object in the Mass Gap Between Neutron Stars and Black Holes

Ewan D. Barr, Arunima Dutta Prajwal Voraganti Padmanabh,Andrea Possenti

SCIENCE(2024)

Max Planck Inst Radioastron

Cited 31|Views53
Abstract
Some compact objects observed in gravitational wave events have masses in the gap between known neutron stars (NSs) and black holes (BHs). The nature of these mass gap objects is unknown, as is the formation of their host binary systems. We report pulsar timing observations made with the Karoo Array Telescope (MeerKAT) of PSR J0514−4002E, an eccentric binary millisecond pulsar in the globular cluster NGC 1851. We found a total binary mass of 3.887 ± 0.004 solar masses ( M ⊙ ), and multiwavelength observations show that the pulsar’s binary companion is also a compact object. The companion’s mass (2.09 to 2.71 M ⊙ , 95% confidence interval) is in the mass gap, indicating either a very massive NS or a low-mass BH. We propose that the companion formed in a merger between two earlier NSs.
More
Translated text
Key words
Compact Binary Mergers,Binary Black Hole,Pulsar Timing
PDF
Bibtex
AI Read Science
Must-Reading Tree
Example
Generate MRT to find the research sequence of this paper
Data Disclaimer
The page data are from open Internet sources, cooperative publishers and automatic analysis results through AI technology. We do not make any commitments and guarantees for the validity, accuracy, correctness, reliability, completeness and timeliness of the page data. If you have any questions, please contact us by email: report@aminer.cn
Chat Paper
Summary is being generated by the instructions you defined