Publications (14)
Data Release 1 of the Dark Energy Spectroscopic Instrument
DESI Collaboration, M. Abdul Karim, A. G. Adame +306
In 2021 May the Dark Energy Spectroscopic Instrument (DESI) collaboration began a 5-year spectroscopic redshift survey to produce a detailed map of the evolving three-dimensional s…
The Afterglow and Environment of the Short GRB111117A
R. Margutti, E. Berger, W. Fong +10
We present multi-wavelength observations of the afterglow of the short GRB111117A, and follow-up observations of its host galaxy. From rapid optical and radio observations we place…
Perspective: Towards the predictive discovery of ambipolarly dopable ultra-wide-band-gap semiconductors: the case of rutile GeO
S. Chae, K. A. Mengle, K. Bushick +8
Ultrawide-band-gap (UWBG) semiconductors are promising for fast, compact, and energy-efficient power-electronics devices. Their wider band gaps result in higher breakdown electric…
DESI DR2 Results I: Baryon Acoustic Oscillations from the Lyman Alpha Forest
DESI Collaboration, M. Abdul-Karim, J. Aguilar +147
We present the Baryon Acoustic Oscillation (BAO) measurements with the Lyman-alpha (LyA) forest from the second data release (DR2) of the Dark Energy Spectroscopic Instrument (DESI…
iPTF15eqv: Multi-wavelength Exposé of a Peculiar Calcium-rich Transient
D. Milisavljevic, D. Patnaude, J. Raymond +15
The progenitor systems of the class of "Ca-rich transients" is a key open issue in time domain astrophysics. These intriguing objects exhibit unusually strong calcium line emission…
Supernova Photometric Classification Pipelines Trained on Spectroscopically Classified Supernovae from the Pan-STARRS1 Medium-Deep Survey
V. A. Villar, E. Berger, G. Miller +11
Photometric classification of supernovae (SNe) is imperative as recent and upcoming optical time-domain surveys, such as the Large Synoptic Survey Telescope (LSST), overwhelm the a…
Slowly fading super-luminous supernovae that are not pair-instability explosions
M. Nicholl, S. J. Smartt, A. Jerkstrand +57
Super-luminous supernovae that radiate more than 10^44 ergs per second at their peak luminosity have recently been discovered in faint galaxies at redshifts of 0.1-4. Some evolve s…
Metamorphosis of SN 2014C: Delayed Interaction Between a Hydrogen Poor Core-collapse Supernova and a Nearby Circumstellar Shell
D. Milisavljevic, R. Margutti, A. Kamble +19
We present optical observations of supernova SN 2014C, which underwent an unprecedented slow metamorphosis from H-poor type Ib to H-rich type IIn over the course of one year. The o…
SN2011hs: a Fast and Faint Type IIb Supernova from a Supergiant Progenitor
F. Bufano, G. Pignata, M. Bersten +33
Observations spanning a large wavelength range, from X-ray to radio, of the Type IIb supernova 2011hs are presented, covering its evolution during the first year after explosion. T…
Validation of the DESI DR2 Measurements of Baryon Acoustic Oscillations from Galaxies and Quasars
U. Andrade, E. Paillas, J. Mena-Fernández +116
The Dark Energy Spectroscopic Instrument (DESI) data release 2 (DR2) galaxy and quasar clustering data represents a significant expansion of data from DR1, providing improved stati…
DESI DR2 Results II: Measurements of Baryon Acoustic Oscillations and Cosmological Constraints
DESI Collaboration, M. Abdul-Karim, J. Aguilar +184
We present baryon acoustic oscillation (BAO) measurements from more than 14 million galaxies and quasars drawn from the Dark Energy Spectroscopic Instrument (DESI) Data Release 2 (…
Comparative Analysis of SN 2012dn Optical Spectra: Days -14 to +114
J. T. Parrent, D. A. Howell, R. A. Fesen +19
SN 2012dn is a super-Chandrasekhar mass candidate in a purportedly normal spiral (SAcd) galaxy, and poses a challenge for theories of type Ia supernova diversity. Here we utilize t…
Relativistic supernovae have shorter-lived central engines or more extended progenitors: the case of SN\,2012ap
R. Margutti, D. Milisavljevic, A. M. Soderberg +10
Deep late-time X-ray observations of the relativistic, engine-driven, type Ic SN2012ap allow us to probe the nearby environment of the explosion and reveal the unique properties of…
SN 2012au: A Golden Link Between Superluminous Supernovae and Their Lower-Luminosity Counterparts
D. Milisavljevic, A. Soderberg, R. Margutti +25
We present optical and near-infrared observations of SN 2012au, a slow-evolving supernova (SN) with properties that suggest a link between subsets of energetic and H-poor SNe and s…