Articles by Ward S. Howard

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Ward S. Howard

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Preparing for the Early eVolution Explorer: Characterizing the photochemical inputs and transit detection efficiencies of young planets using multiwavelength flare observations by TESS and Swift

12 November 2024 by Ward Howard and others

Earth and Planetary Astrophysics, Solar and Stellar Astrophysics

JWST/NIRISS reveals the water-rich "steam world" atmosphere of GJ 9827 d

4 October 2024 by Caroline Piaulet-Ghorayeb and others

Earth and Planetary Astrophysics, Solar and Stellar Astrophysics

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

29 February 2024 by Nathan Galliher and others

Instrumentation and Methods for Astrophysics

Characterizing the Near-infrared Spectra of Flares from TRAPPIST-1 During JWST Transit Spectroscopy Observations

5 October 2023 by Ward Howard and others

Earth and Planetary Astrophysics, Solar and Stellar Astrophysics

The apparent absence of forward scattering in the HD 53143 debris disk

14 April 2023 by Christopher Stark and others

Earth and Planetary Astrophysics

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

21 February 2023 by Hank Corbett and others

Instrumentation and Methods for Astrophysics, High Energy Astrophysical Phenomena

The Mouse that Squeaked: A small flare from Proxima Cen observed in the millimeter, optical, and soft X-ray with Chandra and ALMA

12 September 2022 by Ward Howard and others

Solar and Stellar Astrophysics, Earth and Planetary Astrophysics

ALMA Images the Eccentric HD 53143 Debris Disk

12 June 2022 by Meredith Macgregor and others

Earth and Planetary Astrophysics, Solar and Stellar Astrophysics

The Flaring TESS Objects of Interest: Flare Rates for all Two Minute Cadence TESS Planet Candidates

3 March 2022 by Ward Howard

Solar and Stellar Astrophysics, Earth and Planetary Astrophysics

No Such Thing as a Simple Flare: Substructure and QPPs Observed in a Statistical Sample of 20 Second Cadence TESS Flares

8 December 2021 by Ward Howard and Meredith Macgregor

Solar and Stellar Astrophysics, Earth and Planetary Astrophysics

TIC 172900988: A Transiting Circumbinary Planet Detected in One Sector of TESS Data

27 August 2021 by Veselin Kostov and others at

San Diego State University

Earth and Planetary Astrophysics

EvryFlare IV: Detection of periodicity in flare occurrence from cool stars with TESS

13 July 2021 by Ward Howard and Nicholas Law

Solar and Stellar Astrophysics, Earth and Planetary Astrophysics

Low-Cost Access to the Deep, High-Cadence Sky: the Argus Optical Array

1 July 2021 by Nicholas Law and others

Instrumentation and Methods for Astrophysics, Earth and Planetary Astrophysics

Rotation periods of TESS Objects of Interest from the Magellan-TESS Survey with multiband photometry from Evryscope and TESS

29 June 2021 by Ward Howard and others

Solar and Stellar Astrophysics, Earth and Planetary Astrophysics

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

28 April 2021 by Nathan Galliher and others

Solar and Stellar Astrophysics

Discovery of an Extremely Short Duration Flare from Proxima Centauri Using Millimeter through FUV Observations

19 April 2021 by Meredith Macgregor and others

Solar and Stellar Astrophysics, Earth and Planetary Astrophysics

Revisiting the HD 21749 Planetary System with Stellar Activity Modeling

9 December 2020 by Tianjun Gan and others

Earth and Planetary Astrophysics, Solar and Stellar Astrophysics

Orbital Foregrounds for Ultra-Short Duration Transients

4 November 2020 by Hank Corbett and others

High Energy Astrophysical Phenomena, Instrumentation and Methods for Astrophysics

EvryFlare III: Temperature Evolution and Habitability Impacts of Dozens of Superflares Observed Simultaneously by Evryscope and TESS

1 October 2020 by Ward Howard and others

Solar and Stellar Astrophysics, Earth and Planetary Astrophysics

EVR-CB-004: An Inflated Hot Subdwarf O star + Unseen WD Companion in a Compact Binary Discovered with the Evryscope

13 September 2020 by Jeffrey Ratzloff and others

Solar and Stellar Astrophysics

Evryscope and K2 Constraints on TRAPPIST-1 Superflare Occurrence and Planetary Habitability

17 August 2020 by Amy Glazier and others

Earth and Planetary Astrophysics, Solar and Stellar Astrophysics

Multi-wavelength Photometry and Progenitor Analysis of the Nova V906 Car

25 June 2020 by Jerrick Wee and others

High Energy Astrophysical Phenomena

EvryFlare II: Rotation Periods of the Cool Flare Stars in TESS Across Half the Southern Sky

26 May 2020 by Ward Howard and others

Solar and Stellar Astrophysics, Earth and Planetary Astrophysics

Hot Subdwarf All Southern Sky Fast Transit Survey with the Evryscope

23 December 2019 by Jeffrey Ratzloff and others

Solar and Stellar Astrophysics, Earth and Planetary Astrophysics

EVR-CB-001: An evolving, progenitor, white dwarf compact binary discovered with the Evryscope

3 October 2019 by Jeffrey Ratzloff and others

Solar and Stellar Astrophysics

EvryFlare I: Long-term Evryscope Monitoring of Flares from the Cool Stars Across Half the Southern Sky

23 July 2019 by Ward Howard and others

Solar and Stellar Astrophysics, Earth and Planetary Astrophysics

Variables in the Southern Polar Region Evryscope 2016 Dataset

7 May 2019 by Jeffrey Ratzloff and others

Solar and Stellar Astrophysics

Building the Evryscope: Hardware Design and Performance

26 April 2019 by Jeffrey Ratzloff and others

Instrumentation and Methods for Astrophysics, Solar and Stellar Astrophysics

Bright Opportunities for Atmospheric Characterization of Small Planets: Masses and Radii of K2-3 b, c, d and GJ3470 b from Radial Velocity Measurements and Spitzer Transits

14 February 2019 by Molly Kosiarek and others

Earth and Planetary Astrophysics

The First Naked-Eye Superflare Detected from Proxima Centauri

8 June 2018 by Ward Howard and others

Earth and Planetary Astrophysics, Solar and Stellar Astrophysics

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Solar and Stellar Astrophysics Earth and Planetary Astrophysics Instrumentation and Methods for Astrophysics High Energy Astrophysical Phenomena Astrophysics of Galaxies