activity
20002026
most citedThe NANOGrav 15-year Data Set: Evidence for a Gravitational-Wave Background

1.5k citations · 5.4k across the 47 of their papers we have counts for

collaborators

48 papers

astro-ph.HE2026

Photon-Count Statistics of Crab X-ray Pulses: Skellam Behavior and Excess Variance in the Main Pulse

Max Worchel, Margaret M. Ferris, Sasha Levina +15

The Crab pulsar (PSR B0531+21) provides an unusually rich test bed for statistical studies of high-energy photon-counting data, owing to its extreme brightness and the contrasting…

astro-ph.HE2023

Comparing recent PTA results on the nanohertz stochastic gravitational wave background

The International Pulsar Timing Array Collaboration, G. Agazie, J. Antoniadis +242

The Australian, Chinese, European, Indian, and North American pulsar timing array (PTA) collaborations recently reported, at varying levels, evidence for the presence of a nanohert…

astro-ph.HE2023★ 1.5k cited

The NANOGrav 15-year Data Set: Evidence for a Gravitational-Wave Background

Gabriella Agazie, Akash Anumarlapudi, Anne M. Archibald +111

We report multiple lines of evidence for a stochastic signal that is correlated among 67 pulsars from the 15-year pulsar-timing data set collected by the North American Nanohertz O…

physics.space-ph2023★ 7 cited

Long-Term Density Trend in the Mesosphere and Lower Thermosphere from Occultations of the Crab Nebula with X-Ray Astronomy Satellites

Satoru Katsuda, Teruaki Enoto, Andrea N. Lommen +9

We present long-term density trends of the Earth's upper atmosphere at altitudes between 71 and 116 km, based on atmospheric occultations of the Crab Nebula observed with X-ray ast…

astro-ph.HE2021★ 6 cited

A Detection of Red Noise in PSR J18242452A and Projections for PSR B1937+21 using NICER X-ray Timing Data

Jeffrey S. Hazboun, Jack Crump, Andrea N. Lommen +17

We have used X-ray data from the Neutron Star Interior Composition Explorer (NICER) to search for long time-scale, correlated variations ("red noise") in the pulse times of arrival…

astro-ph.HE2020★ 6 cited

A NICER View of Spectral and Profile Evolution for Three X-ray Emitting Millisecond Pulsars

Dominick M. Rowan, Zaynab Ghazi, Lauren Lugo +17

We present two years of Neutron star Interior Composition Explorer (NICER) X-ray observations of three energetic rotation-powered millisecond pulsars (MSPs): PSRs B1937+21, B1821-2…