The NANOGrav 11 yr data set: Constraints on planetary masses around 45 millisecond pulsars

Behrens, E. A., Ransom, S. M., Madison, D. R., Arzoumanian, Z., Crowter, K., DeCesar, M. E., Demorest, P. B., Dolch, T., Ellis, J. A., Ferdman, R. D., Ferrara, E. C., Fonseca, E., Gentile, P. A., Jones, G., Jones, M. L., Lam, M. T., Levin, L., Lorimer, D. R., Lynch, R. S., McLaughlin, M. A., Ng, C., Nice, D. J., Pennucci, T. T., Perera, B. B. P., Ray, P. S., Spiewak, R., Stairs, I. H., Stovall, K., Swiggum, J. K. and Zhu, W. W. (2020) The NANOGrav 11 yr data set: Constraints on planetary masses around 45 millisecond pulsars. Astrophysical Journal Letters, 893 (1). ISSN 2041-8205

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Abstract

We search for extrasolar planets around millisecond pulsars using pulsar timing data and seek to determine the minimum detectable planetary masses as a function of orbital period. Using the 11 yr data set from the North American Nanohertz Observatory for Gravitational Waves (NANOGrav), we look for variations from our models of pulse arrival times due to the presence of exoplanets. No planets are detected around the millisecond pulsars in the NANOGrav 11 yr data set, but taking into consideration the noise levels of each pulsar and the sampling rate of our observations, we develop limits that show we are sensitive to planetary masses as low as that of the moon. We analyzed potential planet periods, P, in the range 7 days < P < 2000 days, with somewhat smaller ranges for some binary pulsars. The planetary-mass limit for our median-sensitivity pulsar within this period range is .

Item Type: Article
Uncontrolled Keywords: millisecond pulsars,pulsar planets,pulsar timing method,exoplanet detection methods,binary,system,star,evolution
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Depositing User: LivePure Connector
Date Deposited: 10 Aug 2020 23:52
Last Modified: 18 Sep 2020 23:52
URI: https://ueaeprints.uea.ac.uk/id/eprint/76370
DOI: 10.3847/2041-8213/ab8121

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