314 citations · 4.9k across the 151 of their papers we have counts for
17 papers · 1 filter
Pulsar revival in neutron star mergers: multi-messenger prospects for the discovery of pre-merger coherent radio emission
A. J. Cooper, O. Gupta, Z. Wadiasingh +5
We investigate pre-merger coherent radio emission from neutron star mergers arising due to the magnetospheric interaction between compact objects. We consider two plausible radiati…
Magnetar spin-down glitch clearing the way for FRB-like bursts and a pulsed radio episode
G. Younes, M. G. Baring, A. K. Harding +16
Magnetars are a special subset of the isolated neutron star family, with X-ray and radio emission mainly powered by the decay of their immense magnetic fields. Many attributes of m…
Evidence for an abundant old population of Galactic ultra long period magnetars and implications for fast radio bursts
P. Beniamini, Z. Wadiasingh, J. Hare +3
Two recent discoveries, namely PSR J0901-4046 and GLEAM-X J162759.5-523504.3 (hereafter GLEAM-X J1627), have corroborated an extant population of radio-loud periodic sources with l…
High-Energy Photon Opacity in the Twisted Magnetospheres of Magnetars
Kun Hu, Matthew G. Baring, Alice K. Harding +1
Magnetars are neutron stars characterized by strong surface magnetic fields generally exceeding the quantum critical value of 44.1 TeraGauss. High-energy photons propagating in the…
Snowmass 2021 Cosmic Frontier White Paper: The Dense Matter Equation of State and QCD Phase Transitions
Slavko Bogdanov, Emmanuel Fonseca, Rahul Kashyap +26
Our limited understanding of the physical properties of matter at ultra-high density, high proton/neutron number asymmetry, and low temperature is presently one of the major outsta…
The Radius of PSR J0740+6620 from NICER with NICER Background Estimates
Tuomo Salmi, Serena Vinciguerra, Devarshi Choudhury +15
We report a revised analysis for the radius, mass, and hot surface regions of the massive millisecond pulsar PSR J0740+6620, studied previously with joint fits to NICER and XMM-New…
The discovery of the 528.6 Hz accreting millisecond X-ray pulsar MAXI J1816-195
Peter Bult, Diego Altamirano, Zaven Arzoumanian +15
We present the discovery of 528.6 Hz pulsations in the new X-ray transient MAXI J1816-195. Using NICER, we observed the first recorded transient outburst from the neutron star low-…
The All-sky Medium Energy Gamma-ray Observatory eXplorer (AMEGO-X) Mission Concept
Regina Caputo, Marco Ajello, Carolyn Kierans +52
The All-sky Medium Energy Gamma-ray Observatory eXplorer (AMEGO-X) is designed to identify and characterize gamma rays from extreme explosions and accelerators. The main science th…
Search for new cosmic-ray acceleration sites within the 4FGL catalog Galactic plane sources
LAT Collaboration, S. Abdollahi, F. Acero +117
Cosmic rays are mostly composed of protons accelerated to relativistic speeds. When those protons encounter interstellar material, they produce neutral pions which in turn decay in…
A Gamma-ray Pulsar Timing Array Constrains the Nanohertz Gravitational Wave Background
M. Ajello, W. B. Atwood, L. Baldini +129
After large galaxies merge, their central supermassive black holes are expected to form binary systems whose orbital motion generates a gravitational wave background (GWB) at nanoh…
Advancing the Landscape of Multimessenger Science in the Next Decade
Kristi Engel, Tiffany Lewis, Marco Stein Muzio +91
The last decade has brought about a profound transformation in multimessenger science. Ten years ago, facilities had been built or were under construction that would eventually dis…
Limits on the hard X-ray emission from the periodic fast radio burst FRB 180916.J0158+65
Sibasish Laha, Zorawar Wadiasingh, Tyler Parsotan +11
FRB 180916.J0158+65 is one of the nearest, periodically repeating, and actively bursting fast radio burst (FRB) which has been localized to the outskirts of a spiral galaxy. In thi…
Simultaneous view of the FRB~180301 with FAST and NICER during a bursting phase
Sibasish Laha, George Younes, Zorawar Wadiasingh +16
FRB180301 is one of the most actively repeating fast radio bursts (FRBs) which has shown polarization angle changes in its radio burst emission, an indication for their likely orig…
The Future of Gamma-Ray Experiments in the MeV-EeV Range
Kristi Engel, Jordan Goodman, Petra Huentemeyer +95
Gamma-rays, the most energetic photons, carry information from the far reaches of extragalactic space with minimal interaction or loss of information. They bring messages about par…
The Fundamental Plane Relation for Gamma-Ray Pulsars Implied by 4FGL
Constantinos Kalapotharakos, Zorawar Wadiasingh, Alice K. Harding +1
We explore the validity of the recently reported fundamental plane (FP) relation of gamma-ray pulsars using 190 pulsars included in the latest 4FGL-DR3 catalog. This sample number…
Pulse Peak Migration during the Outburst Decay of the Magnetar SGR 1830-0645: Crustal Motion and Magnetospheric Untwisting
G. Younes, S. K. Lander, M. G. Baring +12
Magnetars, isolated neutron stars with magnetic field strengths typically ~G, exhibit distinctive months-long outburst epochs during which strong evolution of soft…
X-ray burst and persistent emission properties of the magnetar SGR 1830-0645 in outburst
G. Younes, C. -P. Hu, K. Bansal +18
We report on NICER X-ray monitoring of the magnetar SGR 1830-0645 covering 223 days following its October 2020 outburst, as well as Chandra and radio observations. We present the m…