activity
20152025
most citedThe First Naked-Eye Superflare Detected from Proxima Centauri

114 citations · 1.1k across the 38 of their papers we have counts for

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16 papers · 1 filter

astro-ph.SR2025★ 4 cited

The Proxima Centauri Campaign -- First Constraints On Millimeter Flare Rates from ALMA

Kiana Burton, Meredith A. MacGregor, Rachel A. Osten +6

Proxima Centauri (Cen) has been the subject of many flaring studies due to its proximity and potential to host habitable planets. The discovery of millimeter flares from this M dwa…

astro-ph.SR2022★ 15 cited

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

Ward S. Howard, Meredith A. MacGregor, Rachel Osten +10

We present millimeter, optical, and soft X-ray observations of a stellar flare with an energy squarely in the regime of typical X1 solar flares. The flare was observed from Proxima…

astro-ph.SR2022★ 19 cited

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

Ward S. Howard

Although more than 5000 TESS Objects of Interest have been cataloged, no comprehensive survey of the flare rates of their host stars exists. We perform the first flare survey of al…

astro-ph.SR2021★ 81 cited

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

Ward S. Howard, Meredith A. MacGregor

A 20 second cadence TESS monitoring campaign of 226 low-mass flare stars during Cycle 3 recorded 3792 stellar flares of >10^32 erg. We explore the time-resolved emission and substr…

astro-ph.SR2021★ 1 cited

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

Ward S. Howard, Nicholas M. Law

Phased flaring, or the periodic occurrence of stellar flares, may probe electromagnetic star-planet interaction (SPI), binary interaction, or magnetic conditions in spots. For the…

astro-ph.SR2021★ 16 cited

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

Ward S. Howard, Johanna Teske, Hank Corbett +8

Stellar RV jitter due to surface activity may bias the RV semi-amplitude and mass of rocky planets. The amplitude of the jitter may be estimated from the uncertainty in the rotatio…