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Palomar Gattini-IR: Survey overview, data processing system, on-sky performance and first results
Kishalay De, Matthew J. Hankins, Mansi M. Kasliwal +24
(Abridged) Palomar Gattini-IR is a new wide-field, near-infrared robotic time domain survey operating at Palomar Observatory. Using a 30 cm telescope mounted with a H2RG detector,…
GROWTH on S190814bv: Deep Synoptic Limits on the Optical/Near-Infrared Counterpart to a Neutron Star-Black Hole Merger
Igor Andreoni, Daniel A. Goldstein, Mansi M. Kasliwal +49
On 2019 August 14, the Advanced LIGO and Virgo interferometers detected the high-significance gravitational wave (GW) signal S190814bv. The GW data indicated that the event resulte…
Supernova 2014C: ongoing interaction with extended circumstellar material with silicate dust
Samaporn Tinyanont, Ryan M Lau, Mansi M Kasliwal +8
Supernova (SN) 2014C is a unique explosion where a seemingly typical hydrogen-poor stripped envelope SN started to interact with a dense, hydrogen-rich circumstellar medium (CSM) a…
GROWTH on S190425z: Searching thousands of square degrees to identify an optical or infrared counterpart to a binary neutron star merger with the Zwicky Transient Facility and Palomar Gattini IR
Michael W. Coughlin, Tomás Ahumada, Shreya Anand +76
The third observing run by LVC has brought the discovery of many compact binary coalescences. Following the detection of the first binary neutron star merger in this run (LIGO/Virg…
Uncovering Red and Dusty Ultraluminous X-ray Sources with Spitzer
Ryan M. Lau, Marianne Heida, Dominic J. Walton +9
We present a mid-infrared (IR) sample study of nearby ultraluminous X-ray sources (ULXs) using multi-epoch observations with the Infrared Array Camera (IRAC) on the Spitzer Space T…
Discovery of an intermediate-luminosity red transient in M51 and its likely dust-obscured, infrared-variable progenitor
Jacob E. Jencson, Scott M. Adams, Howard E. Bond +49
We present the discovery of an optical transient (OT) in Messier 51, designated M51 OT2019-1 (also ZTF19aadyppr, AT 2019abn, ATLAS19bzl), by the Zwicky Transient Facility (ZTF). Th…
The Dynamic Infrared Sky
Mansi M. Kasliwal, Scott Adams, Igor Andreoni +16
Opening up the dynamic infrared sky for systematic time-domain exploration would yield many scientific advances. Multi-messenger pursuits such as localizing gravitational waves fro…
GRBs as Probes of the Early Universe with TSO
Nial Tanvir, Jonathan Grindlay, Edo Berger +12
Long gamma-ray bursts (GRBs) are the most luminous known electromagnetic radiation sources in the Universe for the 3 to 300 sec of their prompt flashes (isotropic X/ gamma-ray lumi…
Big Science with a nUV-MidIR Rapid-Response 1.3m telescope at L2
Jonathan Grindlay, Edo Berger, Brian Metzger +12
Time-domain Astrophysics (TDA), a foundation of Astronomy, has become a major part of current and projected (2020s) astrophysics. While much has been derived from temporal measures…
Kilonovae: nUV/Optical/IR Counterparts of Neutron Star Binary Mergers with TSO
Brian D. Metzger, Edo Berger, Jonathan Grindlay +12
With the epochal first detection of gravitational waves from a binary neutron star (NS) merger with the GW170817 event, and its direct confirmation that NS-NS mergers are significa…
Mapping the Inner Structure of Quasars with Time-Domain Spectroscopy
Yue Shen, Scott Anderson, Edo Berger +40
The ubiquitous variability of quasars across a wide range of wavelengths and timescales encodes critical information about the structure and dynamics of the circumnuclear emitting…
Supernova 2017eaw: molecule and dust formation from infrared observations
Samaporn Tinyanont, Mansi M Kasliwal, Kelsie Krafton +15
We present infrared (IR) photometry and spectroscopy of the Type II-P SN 2017eaw and its progenitor in the nearby galaxy NGC 6946. Progenitor observations in the Ks band in 4 epoch…
ZTF 18aaqeasu (SN 2018byg): A Massive Helium-shell Double Detonation on a Sub-Chandrasekhar Mass White Dwarf
Kishalay De, Mansi M. Kasliwal, Abigail Polin +24
The detonation of a helium shell on a white dwarf has been proposed as a possible explosion triggering mechanism for Type Ia supernovae. Here, we report ZTF 18aaqeasu (SN 2018byg/A…
SPIRITS Catalog of Infrared Variables: Identification of Extremely Luminous Long Period Variables
V. R. Karambelkar, S. M. Adams, P. A. Whitelock +11
We present a catalog of 417 luminous infrared variable stars with periods exceeding 250 days. These were identified in 20 nearby galaxies by the ongoing SPIRITS survey with the Spi…
The SPIRITS sample of Luminous Infrared Transients: Uncovering Hidden Supernovae and Dusty Stellar Outbursts in Nearby Galaxies
Jacob E. Jencson, Mansi M. Kasliwal, Scott M. Adams +23
We present a systematic study of the most luminous ( [Vega magnitudes] brighter than ) infrared (IR) transients discovered by the SPitzer InfraRed Intensive T…