A COORDINATED X-RAY AND OPTICAL CAMPAIGN OF THE NEAREST MASSIVE ECLIPSING BINARY, δ ORIONIS Aa. II. X-RAY VARIABILITY by Nichols, Joy S., Corcoran, M. F., Waldron, W., Pollock, A. M. T., Moffat, A. F. J., Lauer, Jennifer L., Shenar, T., Russell, C. M. P., Richardson, N. D., Pablo, H., Evans, N. R., Hamaguchi, K., Gull, T., Hamann, W.-R., Oskinova, Lidia M., Ignace, R., Hoffman, Jennifer L., Hole, K. T., Lomax, J. R., Huenemoerder, David P., Naze, Y.

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