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Article
| Open Access
An updated nuclear-physics and multi-messenger astrophysics framework for binary neutron star mergers
The Nuclear-physics and Multi-Messenger Astrophysics framework, NMMA, combines multiple information from neutron stars and neutron star mergers. Here, the authors show an update of the NMMA framework to constrain neutron star equation of state by simultaneously analyzing multi-messenger observations.
- Peter T. H. Pang
- , Tim Dietrich
- & Chris Van Den Broeck
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Article
| Open Access
A wind environment and Lorentz factors of tens explain gamma-ray bursts X-ray plateau
The origin of the plateau observed in the early X-ray light curves of gamma ray bursts (GRBs) is debated. Here, the authors show that the observed plateau can be explained within the classical GRB model by considering expanding shell with initial Lorentz factor of a few tens.
- Hüsne Dereli-Bégué
- , Asaf Pe’er
- & Maria G. Dainotti
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Article
| Open Access
Repeating fast radio burst 20201124A originates from a magnetar/Be star binary
Fast radio bursts (FRBs) are bright millisecond or shorter duration transient events. Here, the authors propose that FRB 20201124A comes from a binary system of a magnetar and a Be star with a decretion disk.
- F. Y. Wang
- , G. Q. Zhang
- & K. S. Cheng
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Article
| Open Access
Searching for ultra-light bosons and constraining black hole spin distributions with stellar tidal disruption events
Stellar tidal disruption events (TDEs) occur when stars pass close enough to supermassive black holes. Here, the authors show that future searches TDEs have potential to uncover the existence of ultralight bosons.
- Peizhi Du
- , Daniel Egaña-Ugrinovic
- & Rosalba Perna
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Article
| Open Access
Spectral index-flux relation for investigating the origins of steep decay in γ-ray bursts
Gamma ray bursts (GRB) are transient events releasing large amount of energy. Here, the authors show a relation between the spectral index and the flux, which allows further investigation of the origin of steep decay in GRBs.
- Samuele Ronchini
- , Gor Oganesyan
- & Om Sharan Salafia
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Article
| Open Access
A 34.5 day quasi-periodic oscillation in γ-ray emission from the blazar PKS 2247–131
PKS 2247–131 is an active galaxy that has been emitting gamma-ray flares since October 2016. Here, the authors used data obtained with the Fermi Gamma-ray Space Telescope to find that PKS 2247–131 presents a relatively short, month-like flux oscillation at gamma-ray energies of 0.1–300 GeV.
- Jianeng Zhou
- , Zhongxiang Wang
- & Jujia Zhang
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Article
| Open Access
A luminous blue kilonova and an off-axis jet from a compact binary merger at z = 0.1341
A faint gamma-ray burst (GRB 170817A) has been recently detected in coincidence with the gravitational wave (GW) event GW 170817. Here, the authors report that another faint short GRB at a cosmological distance (GRB150101B) and its late time emission are analogous to the neutron star merger event GRB 170817A.
- E. Troja
- , G. Ryan
- & S. Veilleux
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Article
| Open Access
Strongly lensed repeating fast radio bursts as precision probes of the universe
Fast radio bursts (FRBs) are likely to be gravitationally lensed by intervening galaxies. Here, the authors propose to make accurate measurements of time delays between images of lensed FRBs as a powerful probe for precision cosmology.
- Zheng-Xiang Li
- , He Gao
- & Bing Zhang
A delayed 400 GeV photon from GRB 221009A and implication on the intergalactic magnetic field