Explanipedia

EFTE-SOAR: Two Giant M Dwarf Flares with Rapid Spectroscopic Follow-up Open

Hank Corbett, Nathan Galliher, Amy Glazier, Ramses Gonzalez Chavez, Nicholas M. Law , et al. · 2025

We present time-series optical spectroscopy of two stellar flares with complex multi-peaked light curves: a erg flare from an M8 ultra-cool dwarf, and a erg superflare from an M4 field star. Both f…

The ArgusSpec Prototype: Autonomous Spectroscopic Follow-up of Flares Detected by Large Array Telescopes Open

Nathan Galliher, Thomas Procter, Nicholas M. Law, Hank Corbett, Ward S. Howard , et al. · 2024

ArgusSpec is a prototype autonomous spectroscopic follow-up instrument designed to characterize flares detected by the Argus Pathfinder telescope array by taking short exposure (30 s) broadband spectra (370–750 nm) at low resolutions (R ∼ …

The ArgusSpec Prototype: Autonomous Spectroscopic Follow-up of Flares Detected by Large Array Telescopes Open

Nathan Galliher, Thomas Procter, Nicholas M. Law, Hank Corbett, Ward S. Howard , et al. · 2024

ArgusSpec is a prototype autonomous spectroscopic follow-up instrument designed to characterize flares detected by the Argus Pathfinder telescope array by taking short exposure (30 s) broadband spectra (370 - 750 nm) at low resolutions (R~…

The Evryscope Fast Transient Engine: Real-time Detection for Rapidly Evolving Transients Open

Hank Corbett, Jonathan Carney, Ramses Gonzalez, O. Fors, Nathan Galliher , et al. · 2023

Astrophysical transients with rapid developments on subhour timescales are intrinsically rare. Due to their short durations, events like stellar superflares, optical flashes from gamma-ray bursts, and shock breakouts from young supernovae …

The Evryscope Fast Transient Engine: Real-Time Detection for Rapidly Evolving Transients Open

Hank Corbett, Jonathan Carney, Ramses Gonzalez, O. Fors, Nathan Galliher , et al. · 2023

Astrophysical transients with rapid development on sub-hour timescales are intrinsically rare. Due to their short durations, events like stellar superflares, optical flashes from gamma-ray bursts, and shock breakouts from young supernovae …

Multiwavelength Photometry and Progenitor Analysis of the Nova V906 Car Open

J. Wee, N. Blagorodnova, B.E. Penprase, J.P. Facey, T. Morioka , et al. · 2022

We present optical and infrared photometry of the classical nova V906 Car, also known as Nova Car 2018 and ASASSN-18fv, which was discovered by the All-Sky Automated Survey for SuperNovae (ASAS-SN) on 2018 March 16.32 UT (MJD 58193.0). The…

Orbital foregrounds for ultra-short duration transients Open

Hank Corbett, Nicholas M. Law, Alan Vasquez Soto, William A. Howard, Amy Glazier , et al. · 2022

Reflections from objects in Earth orbit can produce subsecond, star-like optical flashes similar to astrophysical transients. Reflections have historically caused false alarms for transient surveys, but the population has not been systemat…

Mysterious Dust-emitting Object Orbiting TIC 400799224 Open

B.P. Powell, Veselin B. Kostov, S.A. Rappaport, A. Tokovinin, A. Shporer , et al. · 2022

We report the discovery of a unique object of uncertain nature - but quite possibly a disintegrating asteroid or minor planet - orbiting one star of the widely separated binary TIC 400799224. We initially identified the system in data from…

Packing the sky: coverage optimization and evaluation for large telescope arrays Open

Nathan Galliher, Nicholas M. Law, Hank Corbett, Ramses Gonzalez, Lawrence Machia , et al. · 2022

Recent advancements in low-cost astronomical equipment, including high-quality medium-aperture telescopes and low-noise CMOS detectors, have made the deployment of large optical telescope arrays both financially feasible and scientifically…

The sky at one terabit per second: Architecture and implementation of the Argus Array Hierarchical Data Processing System Open

Hank Corbett, Alan Vasquez Soto, Lawrence Machia, Nathan Galliher, Ramses Gonzalez , et al. · 2022

The Argus Optical Array is a synoptic survey observatory, currently in development, that will have a total collecting area equivalent to a 5-meter monolithic telescope and an all-sky field of view, multiplexed from 900 commercial off-the-s…

The inside-out, upside-down telescope: the Argus Array's new pseudofocal design Open

Nicholas M. Law, Alan Vasquez Soto, Hank Corbett, Nathan Galliher, Ramses Gonzalez , et al. · 2022

The Argus Optical Array will be the first all-sky, arcsecond-resolution, 5-m class telescope. The 55 GPix Array, currently being prototyped, will consist of 900 telescopes with 61 MPix very-low-noise CMOS detectors enabling sub-second cade…

Skynet’s New Observing Mode: The Campaign Manager Open

D. A. Dutton, Daniel Reichart, J. Haislip, Vladimir Kouprianov, Omar H. Shaban , et al. · 2022

Built in 2004, the Skynet robotic telescope network originally consisted of six 0.4 m telescopes located at the Cerro-Tololo Inter-American Observatory in the Chilean Andes. The network was designed to carry out simultaneous multi-waveleng…

Mysterious Dust-emitting Object Orbiting TIC 400799224 Open

Brian P. Powell, Veselin B. Kostov, S. Rappaport, Andreï Tokovinin, Avi Shporer , et al. · 2021

We report the discovery of a unique object of uncertain nature—but quite possibly a disintegrating asteroid or minor planet—orbiting one star of the widely separated binary TIC 400799224. We initially identified the system in data from TES…

Investigating exoplanet habitability and the stellar magnetism of cool stars across half the southern sky via superflares, starspots, and stellar rotation Open

Ward S. Howard, N. Law, Hank Corbett, Jeffrey K. Ratzloff, Amy Glazier , et al. · 2021

Stellar flares are stochastic events that occur when a star's magnetic field re-connects, releasing intense radiation across the electromagnetic spectrum. Rocky planets in the habitable zones of M-dwarfs are often subjected to superflares,…

Constraints on Post-Superflare Exo-Auroral Emission with SOAR and the Evryscope Fast Transient Engine Open

Amy Glazier, Nicholas M. Law, Hank Corbett, Ward S. Howard, Alan Vasquez Soto , et al. · 2021

High-energy particles from M-dwarf superflares--flares with energy \(\geq 10^{33}\) erg--can dramatically impact habitable-zone planets around these cool stars, with possible effects including the excitation of intense aurorae as particles…

Orbital Foregrounds for Ultra-short Duration Transients Open

Hank Corbett, Nicholas M. Law, Alan Vasquez Soto, Ward S. Howard, Amy Glazier , et al. · 2020

Reflections from objects in Earth orbit can produce subsecond, star-like optical flashes similar to astrophysical transients. Reflections have historically caused false alarms for transient surveys, but the population has not been systemat…

Evryscope-South Survey of Upper- and Pre-main Sequence Solar Neighborhood Stars Open

Nathan Galliher, Jeffrey K. Ratzloff, Hank Corbett, Nicholas M. Law, Ward S. Howard , et al. · 2020

Using photometric data collected by Evryscope-South, we search for nearby young variable systems on the upper-main sequence (UMS) and pre-main sequence (PMS). The Evryscopes are all-sky high-cadence telescope arrays operating in the Northe…

Erratum: “A Multiwavelength Study of Nearby Millisecond Pulsar PSR J1400–1431: Improved Astrometry and an Optical Detection of Its Cool White Dwarf Companion” (2017, ApJ, 847, 25) Open

Joseph K. Swiggum, D. L. Kaplan, M. A. McLaughlin, D. R. Lorimer, Slavko Bogdanov , et al. · 2020

A Search for Rapidly Pulsating Hot Subdwarf Stars in the GALEX Survey Open

Thomas M. Boudreaux, B. N. Barlow, Scott W. Fleming, Alan Vasquez Soto, Chase Million , et al. · 2020

NASA’s Galaxy Evolution Explorer ( GALEX ) provided near- and far-UV observations for approximately 77% of the sky over a 10-year period; however, the data reduction pipeline initially only released single NUV and FUV images to the communi…

New Pulse Timing Measurements of the sdBV Star CS 1246 Open

Zackary L. Hutchens, B. N. Barlow, Alan Vasquez Soto, D. Reichart, J. B. Haislip , et al. · 2017

CS 1246 is a hot subdwarf B star discovered in 2009 to exhibit a single, large-amplitude radial pulsation. An O-C diagram constructed from this mode revealed reflex motion due to the presence of a low-mass M dwarf, as well as a long-term t…

New Pulse Timing Measurements of the sdBV Star CS 1246 Open

Zackary L. Hutchens, B. N. Barlow, Alan Vasquez Soto, D. Reichart, J. B. Haislip , et al. · 2017

CS 1246 is a hot subdwarf B star discovered in 2009 to exhibit a single, large-amplitude radial pulsation. An O-C diagram constructed from this mode revealed reflex motion due to the presence of a low-mass M dwarf, as well as a long-term t…

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