169 citations · 871 across the 26 of their papers we have counts for
26 papers
Radio and Gamma-Ray Timing of a Newly Discovered Millisecond Pulsar
L. Vleeschower, R. Sengar, L. Nieder +17
We report the discovery and timing of PSR J2147-3604, a fully recycled millisecond pulsar with a spin period of 3.2 ms, discovered in a reprocessing of the 350-MHz Green Bank North…
On the triple nature of the PSR J0435+3233 system
Paulo C. C. Freire, Colin J. Clark, Cees G. Bassa +4
The recent pulsar timing ephemeris of PSR J0435+3233 indicates that this millisecond pulsar (MSP) has a spin-down rate that is much higher than observed in other MSPs and challenge…
Pulsar Discoveries from the TRAPUM UHF Survey of Fermi-LAT Sources
Tinn Thongmeearkom, Colin J. Clark, Rene P. Breton +25
The Fermi Large Area Telescope (LAT) provides advantages for radio pulsar searches by enabling efficient target selection. We can confidently point radio telescopes to the position…
An updated constraint for the Gravitational Wave Background from the Gamma-ray Pulsar Timing Array
Serena Valtolina, Colin J. Clark, Rutger van Haasteren +5
Fermi LAT observations of gamma-ray pulsars can be used to build a pulsar timing array (PTA) experiment to search for gravitational wave (GW) signals at nanohertz frequencies. At t…
Timing Gamma-ray Pulsars using Gibbs Sampling
Colin J. Clark, Serena Valtolina, Lars Nieder +1
Timing analyses of gamma-ray pulsars in the Fermi Large Area Telescope data set can provide sensitive probes of many astrophysical processes, including timing noise in young pulsar…
Einstein@Home Searches for Gamma-ray Pulsars in the Inner Galaxy
C. J. Clark, M. Di Mauro, J. Wu +14
The Fermi Large Area Telescope (LAT) has revealed a mysterious extended excess of GeV gamma-ray emission around the Galactic Center, which can potentially be explained by unresolve…
Multiwavelength observations of a new black-widow millisecond pulsar PSR J1544-2555
Sergio Belmonte Diaz, Tinn Thongmeearkom, Adipol Phosrisom +20
We report the discovery of a new black-widow millisecond pulsar, PSR J1544-2555, associated with the Fermi-LAT source 4FGL J1544.2-2554. Optical, radio, and gamma-ray observations…
Radio and gamma-ray timing of TRAPUM L-band Fermi pulsar survey discoveries
M. Burgay, L. Nieder, C. J. Clark +18
This paper presents the results of a joint radio and gamma-ray timing campaign on the nine millisecond pulsars (MSPs) discovered as part of the L-band targeted survey of Fermi-LAT…
A targeted radio pulsar survey of redback candidates with MeerKAT
T. Thongmeearkom, C. J. Clark, R. P. Breton +18
Redbacks are millisecond pulsar binaries with low mass, irradiated companions. These systems have a rich phenomenology that can be used to probe binary evolution models, pulsar win…
A 350-MHz Green Bank Telescope Survey of Unassociated Fermi LAT Sources: Discovery and Timing of Ten Millisecond Pulsars
P. Bangale, B. Bhattacharyya, F. Camilo +18
We have searched for radio pulsations towards 49 Fermi Large Area Telescope (LAT) 1FGL Catalog -ray sources using the Green Bank Telescope at 350 MHz. We detected 18 millisecond…
The Third Fermi Large Area Telescope Catalog of Gamma-ray Pulsars
David A. Smith, Philippe Bruel, Colin J. Clark +156
We present 294 pulsars found in GeV data from the Large Area Telescope (LAT) on the Fermi Gamma-ray Space Telescope. Another 33 millisecond pulsars (MSPs) discovered in deep radio…
The MPIfR-MeerKAT Galactic Plane survey I -- System setup and early results
P. V. Padmanabh, E. D. Barr, S. S. Sridhar +30
Galactic plane radio surveys play a key role in improving our understanding of a wide range of astrophysical phenomena. Performing such a survey using the latest interferometric te…
Neutron star mass estimates from gamma-ray eclipses in spider millisecond pulsar binaries
C. J. Clark, M. Kerr, E. D. Barr +26
Reliable neutron star mass measurements are key to determining the equation-of-state of cold nuclear matter, but these are rare. "Black Widows" and "Redbacks" are compact binaries…
The TRAPUM L-band survey for pulsars in Fermi-LAT gamma-ray sources
C. J. Clark, R. P. Breton, E. D. Barr +35
More than 100 millisecond pulsars (MSPs) have been discovered in radio observations of gamma-ray sources detected by the Fermi Large Area Telescope (LAT), but hundreds of pulsar-li…
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…
Is the black-widow pulsar PSR J1555-2908 in a hierarchical triple system?
L. Nieder, M. Kerr, C. J. Clark +4
The 559 Hz black-widow pulsar PSR J1555-2908, originally discovered in radio, is also a bright gamma-ray pulsar. Timing its pulsations using 12 yr of Fermi-LAT gamma-ray data revea…
Discovery, Timing, and Multiwavelength Observations of the Black Widow Millisecond Pulsar PSR J1555-2908
Paul S. Ray, Lars Nieder, Colin J. Clark +21
We report the discovery of PSR J1555-2908, a 1.79 ms radio and gamma-ray pulsar in a 5.6 hr binary system with a minimum companion mass of 0.052 . This fast and energetic…
Measuring the mass of the black widow PSR J1555-2908
M. R. Kennedy, R. P. Breton, C. J. Clark +8
Accurate measurements of the masses of neutron stars are necessary to test binary evolution models, and to constrain the neutron star equation of state. In pulsar binaries with no…
Discovery of a Gamma-ray Black Widow Pulsar by GPU-accelerated Einstein@Home
L. Nieder, C. J. Clark, D. Kandel +39
We report the discovery of 1.97 ms period gamma-ray pulsations from the 75 minute orbital-period binary pulsar now named PSR J1653-0158. The associated Fermi Large Area Telescope g…
Radio pulsations from the -ray millisecond pulsar PSR J2039-5617
A. Corongiu, R. P. Mignani, A. S. Seyffert +9
The predicted nature of the candidate redback pulsar 3FGL\,J2039.65618 was recently confirmed by the discovery of -ray millisecond pulsations (Clark et al. 2020, hereafter Pa…
Einstein@Home Discovery of the Gamma-ray Millisecond Pulsar PSR J2039-5617 Confirms Its Predicted Redback Nature
C. J. Clark, L. Nieder, G. Voisin +19
The Fermi Large Area Telescope gamma-ray source 3FGL J2039.65618 contains a periodic optical and X-ray source that was predicted to be a "redback" millisecond pulsar (MSP) binar…
Exploiting Orbital Constraints from Optical Data to Detect Binary Gamma-ray Pulsars
L. Nieder, B. Allen, C. J. Clark +1
It is difficult to discover pulsars via their gamma-ray emission because current instruments typically detect fewer than one photon per million rotations. This creates a significan…
Einstein@Home discovers a radio-quiet gamma-ray millisecond pulsar
C. J. Clark, H. J. Pletsch, J. Wu +18
Millisecond pulsars (MSPs) are old neutron stars that spin hundreds of times per second and appear to pulsate as their emission beams cross our line of sight. To date, radio pulsat…
On the highest energy emission from millisecond pulsars
Pablo M. Saz Parkinson, Andrea Belfiore, David Carreto Fidalgo +3
Fermi has detected over 200 pulsars above 100 MeV. In a previous work, using 3 years of LAT data (1FHL catalog) we reported that 28 of these pulsars show emission above 10 GeV; onl…