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Rates and properties of type Ia supernovae in galaxy clusters within the Dark Energy Survey
M. Toy, P. Wiseman, M. Sullivan +59
We identify 66 photometrically classified type Ia supernovae (SNe Ia) from the Dark Energy Survey (DES) that have occurred within red-sequence selected galaxy clusters. We compare…
Designing an Optimal Kilonova Search using DECam for Gravitational Wave Events
C. R. Bom, J. Annis, A. Garcia +67
We address the problem of optimally identifying all kilonovae detected via gravitational wave emission in the upcoming LIGO/Virgo/KAGRA Collaboration observing run, O4, which is ex…
Core-collapse Supernovae in the Dark Energy Survey: Luminosity Functions and Host Galaxy Demographics
M. Grayling, C. P. Gutiérrez, M. Sullivan +73
We present the luminosity functions and host galaxy properties of the Dark Energy Survey (DES) core-collapse supernova (CCSN) sample, consisting of 69 Type II and 50 Type Ibc spect…
Understanding the extreme luminosity of DES14X2fna
M. Grayling, C. P. Gutiérrez, M. Sullivan +66
We present DES14X2fna, a high-luminosity, fast-declining type IIb supernova (SN IIb) at redshift , detected by the Dark Energy Survey (DES). DES14X2fna is an unusual memb…
Candidate Periodically Variable Quasars from the Dark Energy Survey and the Sloan Digital Sky Survey
Yu-Ching Chen, Xin Liu, Wei-Ting Liao +62
Periodically variable quasars have been suggested as close binary supermassive black holes. We present a systematic search for periodic light curves in 625 spectroscopically confir…
A DESGW Search for the Electromagnetic Counterpart to the LIGO/Virgo Gravitational Wave Binary Neutron Star Merger Candidate S190510g
DES Collaboration, A. Garcia, R. Morgan +87
We present the results from a search for the electromagnetic counterpart of the LIGO/Virgo event S190510g using the Dark Energy Camera (DECam). S190510g is a binary neutron star (B…
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…
Studying Type II supernovae as cosmological standard candles using the Dark Energy Survey
T. de Jaeger, L. Galbany, S. González-Gaitán +85
Despite vast improvements in the measurement of the cosmological parameters, the nature of dark energy and an accurate value of the Hubble constant (H) in the Hubble-Lemaître l…
The Mystery of Photometric Twins DES17X1boj and DES16E2bjy
M. Pursiainen, C. Gutierrez, P. Wiseman +80
We present an analysis of DES17X1boj and DES16E2bjy, two peculiar transients discovered by the Dark Energy Survey (DES). They exhibit nearly identical double-peaked light curves wh…
A DECam Search for Explosive Optical Transients Associated with IceCube Neutrinos
R. Morgan, K. Bechtol, R. Kessler +65
In this work, we investigate the likelihood of association between realtime, TeV-PeV energy neutrino alerts from IceCube and optical counterparts in the form of core-collapse super…
Superluminous Supernovae from the Dark Energy Survey
C. R. Angus, M. Smith, M. Sullivan +72
We present a sample of 21 hydrogen-free superluminous supernovae (SLSNe-I), and one hydrogen-rich SLSN (SLSN-II) detected during the five-year Dark Energy Survey (DES). These SNe,…
A Search for Optical Emission from Binary-Black-Hole Merger GW170814 with the Dark Energy Camera
Z. Doctor, R. Kessler, K. Herner +96
Binary black hole (BBH) mergers found by the LIGO and Virgo detectors are of immense scientific interest to the astrophysics community, but are considered unlikely to be sources of…
Rapidly evolving transients in the Dark Energy Survey
M. Pursiainen, M. Childress, M. Smith +79
We present the results of a search for rapidly evolving transients in the Dark Energy Survey Supernova Programme. These events are characterized by fast light curve evolution (rise…
Studying the Ultraviolet Spectrum of the First Spectroscopically Confirmed Supernova at redshift two
M. Smith, M. Sullivan, R. C. Nichol +87
We present observations of DES16C2nm, the first spectroscopically confirmed hydrogen-free superluminous supernova (SLSN-I) at redshift z~2. DES16C2nm was discovered by the Dark Ene…
Evidence for Dynamically Driven Formation of the GW170817 Neutron Star Binary in NGC 4993
A. Palmese, W. Hartley, F. Tarsitano +89
We present a study of NGC 4993, the host galaxy of the GW170817 gravitational wave event, the GRB170817A short gamma-ray burst (sGRB) and the AT2017gfo kilonova. We use Dark Energy…
The Electromagnetic Counterpart of the Binary Neutron Star Merger LIGO/VIRGO GW170817. II. UV, Optical, and Near-IR Light Curves and Comparison to Kilonova Models
P. S. Cowperthwaite, E. Berger, V. A. Villar +141
We present UV, optical, and NIR photometry of the first electromagnetic counterpart to a gravitational wave source from Advanced LIGO/Virgo, the binary neutron star merger GW170817…
The Electromagnetic Counterpart of the Binary Neutron Star Merger LIGO/Virgo GW170817. I. Dark Energy Camera Discovery of the Optical Counterpart
M. Soares-Santos, D. E. Holz, J. Annis +142
We present the Dark Energy Camera (DECam) discovery of the optical counterpart of the first binary neutron star merger detected through gravitational wave emission, GW170817. Our o…
Searching for Dark Matter Annihilation in Recently Discovered Milky Way Satellites with Fermi-LAT
The Fermi-LAT, DES Collaborations, A. Albert +70
We search for excess gamma-ray emission coincident with the positions of confirmed and candidate Milky Way satellite galaxies using 6 years of data from the Fermi Large Area Telesc…
A Search for Kilonovae in the Dark Energy Survey
Z. Doctor, R. Kessler, H. Y. Chen +68
The coalescence of a binary neutron star (BNS) pair is expected to produce gravitational waves (GW) and electromagnetic (EM) radiation, both of which may be detectable with current…
The Evolution of Active Galactic Nuclei in Clusters of Galaxies from the Dark Energy Survey
E. Bufanda, D. Hollowood, T. E. Jeltema +53
The correlation between active galactic nuclei (AGN) and environment provides important clues to AGN fueling and the relationship of black hole growth to galaxy evolution. In this…
A DECam Search for an Optical Counterpart to the LIGO Gravitational Wave Event GW151226
P. S. Cowperthwaite, E. Berger, M. Soares-Santos +97
We report the results of a Dark Energy Camera (DECam) optical follow-up of the gravitational wave (GW) event GW151226, discovered by the Advanced LIGO detectors. Our observations c…
DESAlert: Enabling Real-Time Transient Follow-Up with Dark Energy Survey Data
A. Poci, K. Kuehn, the DES Collaboration +63
The Dark Energy Survey (DES) is currently undertaking an observational program imaging of the southern hemisphere sky with unprecedented photometric accuracy. In the process…
Search for Gamma-Ray Emission from DES Dwarf Spheroidal Galaxy Candidates with Fermi-LAT Data
LAT Collaboration, The DES Collaboration, A. Drlica-Wagner +123
Due to their proximity, high dark-matter content, and apparent absence of non-thermal processes, Milky Way dwarf spheroidal satellite galaxies (dSphs) are excellent targets for the…
DES13S2cmm: The First Superluminous Supernova from the Dark Energy Survey
A. Papadopoulos, C. B. D'Andrea, M. Sullivan +66
We present DES13S2cmm, the first spectroscopically-confirmed superluminous supernova (SLSN) from the Dark Energy Survey (DES). We briefly discuss the data and search algorithm used…