Tootfinder

Searching for radio emission from radio quiet magnetars with MeerKAT
Marlon L. Bause, Kamalpreet Kaur, Isabella Rammala-Zitha, Laura G. Spitler
https://arxiv.org/abs/2509.14043 …

Searching for radio emission from radio quiet magnetars with MeerKAT
Magnetars occupy the neutron star population, with magnetic field strengths of more than 10e12 G. They have been proposed as one of the most likely progenitor models for the phenomenon of energetic, ms-duration, extragalactic radio bursts (FRBs) intensively since FRB-like bursts emitted from the galactic Magnetar SGR 1935+2154. Only a low fraction of the magnetars (six in total) has been detected in the radio regime and most magnetars are radio quiet. We conducted regular observations of 13 rad…

Origin of Pulsed Radio Emission from Magnetars
Shuzhe Zeng, Alexander Philippov, James Juno, Andrei M. Beloborodov, Elena Popova
https://arxiv.org/abs/2509.13419 https://…

Origin of Pulsed Radio Emission from Magnetars
Extended periods of radio pulsations have been observed for six magnetars, displaying characteristics different from those of ordinary pulsars. In this Letter, we argue that radio emission is generated in a closed, twisted magnetic flux bundle originating near the magnetic pole and extending beyond 100 km from the magnetar. The electron-positron flow in the twisted bundle has to carry electric current and, at the same time, experiences a strong drag by the radiation field of the magnetar. This …

Magnetars in Binaries as the Engine of Actively Repeating #FastRadioBursts: https://iopscience.iop.org/article/10.3847/2041-8213/ae1023 -> A Unified Explanation for Fast Radio Bursts: https://aasnova.org/2025/12/10/a-unified-explanation-for-fast-radio-bursts/

Unveil A Peculiar Light Curve Pattern of Magnetar Burst with GECAM observations of SGR J1935 2154
Yue Wang, Chen-Wei Wang, Shaolin Xiong, Xiao Xiao, Yanqiu Zhang, Sheng-Lun Xie, Lin Lin, Yuan-Pei Yang, Haoxuan Guo, Ce Cai, Yue Huang, Cheng-Kui Li, Bing Li, Xiaobo Li, Jiacong Liu, Xiang Ma, Liming Song, Wen-Jun Tan, Ping Wang, Wang-Chen Xue, Shu-Xu Yi, Yun-Wei Yu, Zheng-Hang Yu, Jin-Peng Zhang, Peng Zhang, Shuang-Nan Zhang, Wen-Long Zhang, Zhen Zhang, Xiao-Yun Zhao, Chao Zheng, S. J. Zh…

Unveil A Peculiar Light Curve Pattern of Magnetar Burst with GECAM observations of SGR J1935+2154
Magnetar X-ray Burst (MXB) is usually composed of a single pulse or multiple pulses with rapid rise and brief duration mostly observed in hard X-ray (soft gamma-ray) band. Previous work studied the temporal behavior of some magnetar bursts and employed the Fast Rise Exponential Decay (FRED) model to fit pulses of MXB. However, whether there is other kind of pulse shape has not been explored. In this study, we systematically examined light curve of MXBs from SGR J1935+2154 detected by GECAM betw…

No Sign of a Magnetar Remnant Following the Kilonova-Producing Long GRB 211211A $\sim 1.7~$Years Later
Genevieve Schroeder (Cornell), Ben Margalit, Brian D. Metzger, Wen-fai Fong, Benjamin P. Gompertz, Kate D. Alexander, Edo Berger, Tanmoy Laskar, Gavin P. Lamb, Andrew Levan, Charles D. Kilpatrick, Jillian C. Rastinejad
https://arxiv.org/a…

No Sign of a Magnetar Remnant Following the Kilonova-Producing Long GRB 211211A $\sim 1.7~$Years Later
In addition to a $γ$-ray burst (GRB), the merger of two neutron stars may produce a temporarily or indefinitely stable neutron star remnant with a strong magnetic field (a "magnetar"). As this magnetar remnant spins down, it can deposit its rotational energy into the surrounding kilonova ejecta, producing synchrotron emission that peaks in the radio bands $\sim$months-years after the merger ("boosted kilonova"). The nearby ($z=0.0763$) long-duration GRB 211211A, which has an apparent kilonova …

Constraints on an optical counterpart for the long-period radio transient GPM J1839-10
Ingrid Pelisoli, A. J. Brown, N. Castro Segura, V. S. Dhillon, M. J. Dyer, J. A. Garbutt, M. J. Green, D. Jarvis, M. R. Kennedy, P. Kerry, S. P. Littlefair, J. McCormac, J. Munday, S. G. Parsons, E. Pike, D. I. Sahman, A. Yates
https://arxiv.org/abs/2509…

Constraints on an optical counterpart for the long-period radio transient GPM J1839-10
Long period radio transients (LPTs) are periodic radio sources showing pulsed emission on timescales from minutes to hours. The underlying sources behind this emission are currently unclear. There are two leading candidates: neutron stars or white dwarfs. Neutron stars could emit at LPT timescales as magnetars, binaries, or precessing sources. White dwarfs on the other hand have only been observed to emit in radio as binary systems with companions that provide charged particles through their wi…

Vacuum birefringence in the polarized X-ray emission of a radio magnetar
Rachael E. Stewart, Hoa Dinh Thi, George Younes, Marcus E. Lower, Matthew G. Baring, Michela Negro, Fernando Camilo, Joel B. Coley, Alice K. Harding, Wynn C. G. Ho, Chin-Ping Hu, Philip Kaaret, Paul Scholz, Alex Van Kooten, Zorawar Wadiasingh
https://arxiv.org/abs/250…

Vacuum birefringence in the polarized X-ray emission of a radio magnetar
The quantum electrodynamics (QED) theory predicts that the quantum vacuum becomes birefringent in the presence of ultra-strong magnetic fields -- a fundamental effect yet to be directly observed. Magnetars, isolated neutron stars with surface fields exceeding $10^{14}$~G, provide unique astrophysical laboratories to probe this elusive prediction. Here, we report phase- and energy-resolved X-ray polarization measurements of the radio-emitting magnetar 1E 1547.0-5408 obtained with the Imaging X-r…

Magnetar-like flares behind the high-energy emission in LS 5039
V. Bosch-Ramon, M. V. Barkov
https://arxiv.org/abs/2509.19173 https://arxiv.org/pdf/2509.19…

Ultra-long Gamma-ray Bursts from Micro-Tidal Disruption Events: The Case of GRB 250702B
Paz Beniamini, Hagai B. Perets, Jonathan Granot
https://arxiv.org/abs/2509.22779 https://…

Ultra-long Gamma-ray Bursts from Micro-Tidal Disruption Events: The Case of GRB 250702B
Ultra-long gamma-ray bursts (ULGRBs), a rare class of high-energy transients with durations $>10^3$,s, remain poorly understood. GRB,250702B ($z=1.04$) is notable for its multi-hour prompt emission, an X-ray precursor $\sim$1 day earlier, off-nuclear host position, and hard, rapidly variable gamma-rays. This combination is difficult to explain with standard ULGRB progenitors such as blue-supergiant collapsars, magnetar engines, or white-dwarf tidal disruptions by intermediate-mass black holes. …

Replaced article(s) found for astro-ph.HE. https://arxiv.org/list/astro-ph.HE/new
[1/1]:
- Gravitational Waves from Magnetars
Chris Kouvaris
https://…