Jennie McCormick - Center for Backyard Astrophysics

Jennie McCormick
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Jennie McCormick
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Center for Backyard Astrophysics
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Solar and Stellar Astrophysics (6)
 
Astrophysics (1)
 
High Energy Astrophysical Phenomena (1)

Publications Authored By Jennie McCormick

It has recently been discovered that some, if not all, classical novae emit GeV gamma-rays during outburst, but the mechanics of this gamma-ray emission are still not well understood. We present here a comprehensive, multi-wavelength dataset---from radio to X-rays---for the most gamma-ray luminous classical nova to-date, V1324 Sco. Using this dataset, we show that V1324 Sco is a canonical dusty Fe-II type nova, with a bulk ejecta velocity of $1150 \pm 40~\rm km~s^{-1}$ and an ejecta mass of $2. Read More

2016Mar
Affiliations: 1Columbia Univ, 2Center for Backyard Astrophysics, 3Middlebury Coll, 4Center for Backyard Astrophysics, 5Center for Backyard Astrophysics, 6Center for Backyard Astrophysics, 7Center for Backyard Astrophysics, 8Center for Backyard Astrophysics, 9Center for Backyard Astrophysics, 10Center for Backyard Astrophysics, 11Center for Backyard Astrophysics, 12Center for Backyard Astrophysics, 13Columbia Univ, 14Center for Backyard Astrophysics, 15Center for Backyard Astrophysics, 16Harlingten Obs, 17Center for Backyard Astrophysics

We report a 20-year campaign to track the 1.8 hour photometric wave in the recurrent nova T Pyxidis, using the global telescope network of the Center for Backyard Astrophysics. During 1996-2011, that wave was highly stable in amplitude and waveform, resembling the orbital wave commonly seen in supersoft binaries. Read More

2013Mar
Affiliations: 1Columbia Univ, 2Center for Backyard Astrophysics, 3Center for Backyard Astrophysics, 4Center for Backyard Astrophysics, 5Center for Backyard Astrophysics, 6Center for Backyard Astrophysics, 7Center for Backyard Astrophysics, 8Columbia Univ, 9Center for Backyard Astrophysics, 10Center for Backyard Astrophysics, 11Center for Backyard Astrophysics, 12Center for Backyard Astrophysics, 13Center for Backyard Astrophysics, 14Center for Backyard Astrophysics, 15Center for Backyard Astrophysics

We report a long campaign to track the 1.8 hr photometric wave in the recurrent nova T Pyxidis, using the global telescope network of the Center for Backyard Astrophysics. During 1996-2011, that wave was highly stable in amplitude and waveform, resembling the orbital wave commonly seen in supersoft binaries. Read More

We report the discovery of rapid periodic signals in the light curves of two cataclysmic variables with prominent white-dwarf components in their spectra, SDSS J1457+51 and BW Sculptoris. These stars therefore appear to be new members of the GW Lib class of variable star, in which the fast periodic (and non-commensurate with the orbital period) signals are believed to arise from non-radial pulsations in the underlying white dwarf. The power spectra of both stars show complex signals with primary periods near 10 and 20 minutes. Read More

2005Jul
Affiliations: 1Columbia Univ, 2Joint Astron. Ctr, 3Ctr. for Backyard Astroph, 4Ctr. for Backyard Astroph, 5Ctr. for Backyard Astroph, 6Ctr. for Backyard Astroph, 7Ctr. for Backyard Astroph, 8Ctr. for Backyard Astroph, 9Ctr. for Backyard Astroph, 10Ctr. for Backyard Astroph, 11Univ. of California-San Diego, 12Ctr. for Backyard Astroph, 13Ctr. for Backyard Astroph, 14Ctr. for Backyard Astroph, 15Ctr. for Backyard Astroph, 16Ctr. for Backyard Astroph, 17Ctr. for Backyard Astroph, 18Ctr. for Backyard Astroph, 19Ctr. for Backyard Astroph, 20Univ. of Auckland
Category: Astrophysics

We report on successes and failures in searching for positive superhumps in cataclysmic variables, and show the superhumping fraction as a function of orbital period. Basically, all short-period systems do, all long-period systems don't, and a 50% success rate is found at P_orb=3.1+-0. Read More