49 citations · 164 across the 17 of their papers we have counts for
19 papers
Progress in quantum telescopes
David R. Gozzard, Fiona H. Panther, Andrew G. White
Classically, the angular resolution of a telescope is limited by its diffraction limit: the ratio of its observing wavelength to its diameter. Developments in quantum information t…
Weak in the Presence of Beauty: Gravitational waves from the mergers of black holes and neutron stars as a messenger
Fiona H. Panther, Jordan W. N. Moncrieff, Mac L. Button
In 2025, the 4th Gravitational Wave Transient Catalog reported the discovery of over 200 gravitational wave events since 2015. These gravitational waves (GWs) are emitted by compac…
RABBITS IV: Stellar feedback and SMBH merging time-scales in the sub-Milky Way mass regime
Ruby J. Wright, Roosa Heiskanen, Shihong Liao +5
Merging supermassive black holes (SMBHs) in low- and intermediate-mass galaxies are important sources for future millihertz gravitational-wave observatories such as LISA. Predictin…
Stellar flares cannot explain the Galactic 511 keV emission
Saurabh Mittal, Thomas Siegert, Francesca Calore +12
The origin of the 511 keV line signal in the Milky Way remains unresolved despite decades of observations. The measured flux of $\sim 3 \times 10^{-3}\,\mathrm{ph\,cm^{-2}\,s^{-1}}…
Connecting The Hierarchically Merging Binary Black Hole Population To Their Host Galaxies
Jordan Moncrieff, Fiona Panther
The detection of gravitational waves from merging black holes with masses suggests that some proportion of black hole binary systems form hierarchi…
The effect of noise artefacts on gravitational-wave searches for neutron star post-merger remnants
Fiona H. Panther, Paul D. Lasky
Gravitational waves from binary neutron star post-merger remnants have the potential to uncover the physics of the hot nuclear equation of state. These gravitational-wave signals a…
Constraints on the ultra-high energy cosmic ray output of gamma-ray bursts
Eloise Moore, Bruce Gendre, N. Brice Orange +1
Ultra-high energy cosmic rays are the most extreme energetic particles detected on Earth, however, their acceleration sites are still mysterious. We explore the contribution of low…
The most probable host of CHIME FRB 190425A, associated with binary neutron star merger GW190425, and a late-time transient search
Fiona H. Panther, Gemma E. Anderson, Shivani Bhandari +9
The identification and localization of Fast Radio Bursts to their host galaxies has revealed important details about the progenitors of these mysterious, millisecond-long bursts of…
Measuring the smearing of the Galactic 511 keV signal: positron propagation or supernova kicks?
Thomas Siegert, Roland M. Crocker, Oscar Macias +4
We use 15 years of -ray data from INTEGRAL/SPI in a refined investigation of the morphology of the Galactic bulge positron annihilation signal. Our spatial analysis confirms tha…
Prospects of direct detection of V gamma-rays from thermonuclear supernovae
Fiona H. Panther, Ivo R. Seitenzahl, Ashley J. Ruiter +3
Detection of gamma-rays emitted by radioactive isotopes synthesized in stellar explosions can give important insights into the processes that power transients such as supernovae, a…
Constraints on positron annihilation kinematics in the inner Galaxy
Thomas Siegert, Roland M. Crocker, Roland Diehl +4
The annihilation of cosmic positrons () with electrons in the interstellar medium (ISM) results in the strongest persistent gamma-ray line signal in the sky. For 50 years, thi…
Gamma-ray lines in modern astrophysics
Fiona H. Panther
Gamma-ray astronomy provides a direct window into the most violent, dynamic processes in the Universe. MeV gamma-ray astronomy in particular allows us to directly observe the proce…
SN1991bg-like supernovae are associated with old stellar populations
Fiona H. Panther, Ivo R. Seitenzahl, Ashley J. Ruiter +5
SN1991bg-like supernovae are a distinct subclass of thermonuclear supernovae (SNe Ia). Their spectral and photometric peculiarities indicate their progenitors and explosion mechani…
Positron Annihilation in the Galaxy
Carolyn A. Kierans, John F. Beacom, Steve Boggs +27
The 511 keV line from positron annihilation in the Galaxy was the first -ray line detected to originate from outside our solar system. Going into the fifth decade since the disc…
The effect of positron-alkali metal atom interactions in the diffuse ISM
Fiona H. Panther, Ivo R. Seitenzahl, Roland M. Crocker +4
In the Milky Way galaxy, positrons, which are responsible for the diffuse gamma ray emission observed by space-based gamma ray observatories, are thought to ann…
Positron Transport And Annihilation In The Galactic Bulge
Fiona H. Panther
The annihilation of positrons in the Milky Way galaxy has been observed for years however the production sites of these positrons remains hard to identify. The observed m…
Positron Annihilation in the Nuclear Outflows of the Milky Way
Fiona H. Panther, Roland M. Crocker, Yuval Birnboim +2
Observations of soft gamma rays emanating from the Milky Way from SPI/\textit{INTEGRAL} reveal the annihilation of positrons every second in the Galactic bulge…
SN1991bg-like supernovae are a compelling source of most Galactic antimatter
Fiona H. Panther, Roland M. Crocker, Ivo R. Seitenzahl +1
The Milky Way Galaxy glows with the soft gamma ray emission resulting from the annihilation of electron-positron pairs every second. The origin of this vast…
Diffuse Galactic antimatter from faint thermonuclear supernovae in old stellar populations
Roland M. Crocker, Ashley J. Ruiter, Ivo R. Seitenzahl +10
Our Galaxy hosts the annihilation of a few low-energy positrons every second. Radioactive isotopes capable of supplying such positrons are synthesised in stars, st…