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- Goddard Space Flight CenterUS128 papers
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30 papers · 1 filter
The Missing Cool Corona in the Flat Magnetic Field around Solar Active Regions
Talwinder Singh, Alphonse C. Sterling, Ronald L. Moore
SDO/AIA images the full solar disk in several EUV bands that are each sensitive to coronal plasma emissions of one or more specific temperatures. We observe that when isolated acti…
The X-ray bursts of XTE J1739-285: a NICER sample
Peter Bult, Diego Altamirano, Zaven Arzoumanian +10
In this work we report on observations with the Neutron Star Interior Composition Explorer of the known neutron star X-ray transient XTE J1739-285. We observed the source in 2020 F…
Observational Evidence for Enhanced Black Hole Accretion in Giant Elliptical Galaxies
Michael McDonald, Brian R. McNamara, Michael S. Calzadilla +5
We present a study of the relationship between black hole accretion rate (BHAR) and star formation rate (SFR) in a sample of giant elliptical galaxies. These galaxies, which live a…
A Large Population of Luminous Active Galactic Nuclei Lacking X-ray Detections: Evidence for Heavy Obscuration?
Christopher M. Carroll, Ryan C. Hickox, Alberto Masini +5
We present a large sample of infrared-luminous candidate active galactic nuclei (AGNs) that lack X-ray detections in Chandra, XMM-Newton, and NuSTAR fields. We selected all optical…
All-sky search in early O3 LIGO data for continuous gravitational-wave signals from unknown neutron stars in binary systems
The LIGO Scientific Collaboration, the Virgo Collaboration, R. Abbott +1369
Rapidly spinning neutron stars are promising sources of persistent, continuous gravitational waves. Detecting such a signal would allow probing of the physical properties of matter…
The BayesWave analysis pipeline in the era of gravitational wave observations
Neil J. Cornish, Tyson B. Littenberg, Bence Bécsy +4
We describe updates and improvements to the BayesWave gravitational wave transient analysis pipeline, and provide examples of how the algorithm is used to analyze data from ground-…