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Discovery of a Candidate Binary Supermassive Black Hole in a Periodic Quasar from Circumbinary Accretion Variability
Wei-Ting Liao, Yu-Ching Chen, Xin Liu +68
Binary supermassive black holes (BSBHs) are expected to be a generic byproduct from hierarchical galaxy formation. The final coalescence of BSBHs is thought to be the loudest gravi…
Constraints on the Physical Properties of GW190814 through Simulations based on DECam Follow-up Observations by the Dark Energy Survey
R. Morgan, M. Soares-Santos, J. Annis +99
On 14 August 2019, the LIGO and Virgo Collaborations detected gravitational waves from a black hole and a 2.6 solar mass compact object, possibly the first neutron star -- black ho…
The first Hubble diagram and cosmological constraints using superluminous supernova
C. Inserra, M. Sullivan, C. R. Angus +88
We present the first Hubble diagram of superluminous supernovae (SLSNe) out to a redshift of two, together with constraints on the matter density, , and the dark energy…
Dynamical Classification of Trans-Neptunian Objects Detected by the Dark Energy Survey
T. Khain, J. C. Becker, Hsing Wen Lin +52
The outer Solar System contains a large number of small bodies (known as trans-Neptunian objects or TNOs) that exhibit diverse types of dynamical behavior. The classification of bo…
Optical follow-up of gravitational wave triggers with DECam during the first two LIGO/VIRGO observing runs
K. Herner, J. Annis, D. Brout +82
Gravitational wave (GW) events detectable by LIGO and Virgo have several possible progenitors, including black hole mergers, neutron star mergers, black hole--neutron star mergers,…