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The NANOGrav 12.5-Year Data Set: Polarimetry, Rotation Measures, and Galactic Magnetic Field Strengths from NANOGrav Observations with the Green Bank Telescope
We present polarization profiles for 24 millisecond pulsars observed at 820 and 1500 MHz with the Green Bank Telescope by the NANOGrav pulsar timing array. We use Mueller matrix solutions calculated from observations of PSRs B1929+10 and J1022+1001 to calibrate the data. We discuss the polarization...
| Autores principales: | , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , |
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| Lenguaje: | eng |
| Publicado: |
2021
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| Materias: | |
| Acceso en línea: | http://cds.cern.ch/record/2764479 |
| _version_ | 1780971117063700480 |
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| author | Wahl, H.M. McLaughlin, M.A. Gentile, P.A. Jones, M.L. Spiewak, R. Arzoumanian, Z. Crowter, K. Demorest, P.B. DeCesar, M.E. Dolch, T. Ellis, J.A. Ferdman, R.D. Ferrara, E.C. Fonseca, E. Garver-Daniels, N. Jones, G. Lam, M.T. Levin, L. Lewandowska, N. Lorimer, D.R. Lynch, R.S. Madison, D.R. Ng, C. Nice, D.J. Pennucci, T.T. Ransom, S.M. Ray, P. Stairs, I.H. Stovall, K. Swiggum, J.K. Zhu, W.W. |
| author_facet | Wahl, H.M. McLaughlin, M.A. Gentile, P.A. Jones, M.L. Spiewak, R. Arzoumanian, Z. Crowter, K. Demorest, P.B. DeCesar, M.E. Dolch, T. Ellis, J.A. Ferdman, R.D. Ferrara, E.C. Fonseca, E. Garver-Daniels, N. Jones, G. Lam, M.T. Levin, L. Lewandowska, N. Lorimer, D.R. Lynch, R.S. Madison, D.R. Ng, C. Nice, D.J. Pennucci, T.T. Ransom, S.M. Ray, P. Stairs, I.H. Stovall, K. Swiggum, J.K. Zhu, W.W. |
| author_sort | Wahl, H.M. |
| collection | CERN |
| description | We present polarization profiles for 24 millisecond pulsars observed at 820 and 1500 MHz with the Green Bank Telescope by the NANOGrav pulsar timing array. We use Mueller matrix solutions calculated from observations of PSRs B1929+10 and J1022+1001 to calibrate the data. We discuss the polarization profiles, which can be used to constrain pulsar emission geometry, and also present the discovery of very low intensity average profile components ("microcomponents") in four pulsars. Using the rotation measures we measured for each pulsar, we calculate the Galactic magnetic field parallel to the line of sight for different lines of sight through the interstellar medium. We fit for linear and sinusoidal trends in time in the rotation measure, dispersion measure, and Galactic magnetic field. We detect rotation measure variations with a period of one year in some pulsars but overall find that the variations in these parameters are more consistent with a stochastic origin. |
| id | cern-2764479 |
| institution | Organización Europea para la Investigación Nuclear |
| language | eng |
| publishDate | 2021 |
| record_format | invenio |
| spelling | cern-27644792021-05-03T08:10:32Zhttp://cds.cern.ch/record/2764479engWahl, H.M.McLaughlin, M.A.Gentile, P.A.Jones, M.L.Spiewak, R.Arzoumanian, Z.Crowter, K.Demorest, P.B.DeCesar, M.E.Dolch, T.Ellis, J.A.Ferdman, R.D.Ferrara, E.C.Fonseca, E.Garver-Daniels, N.Jones, G.Lam, M.T.Levin, L.Lewandowska, N.Lorimer, D.R.Lynch, R.S.Madison, D.R.Ng, C.Nice, D.J.Pennucci, T.T.Ransom, S.M.Ray, P.Stairs, I.H.Stovall, K.Swiggum, J.K.Zhu, W.W.The NANOGrav 12.5-Year Data Set: Polarimetry, Rotation Measures, and Galactic Magnetic Field Strengths from NANOGrav Observations with the Green Bank Telescopeastro-ph.SRAstrophysics and AstronomyWe present polarization profiles for 24 millisecond pulsars observed at 820 and 1500 MHz with the Green Bank Telescope by the NANOGrav pulsar timing array. We use Mueller matrix solutions calculated from observations of PSRs B1929+10 and J1022+1001 to calibrate the data. We discuss the polarization profiles, which can be used to constrain pulsar emission geometry, and also present the discovery of very low intensity average profile components ("microcomponents") in four pulsars. Using the rotation measures we measured for each pulsar, we calculate the Galactic magnetic field parallel to the line of sight for different lines of sight through the interstellar medium. We fit for linear and sinusoidal trends in time in the rotation measure, dispersion measure, and Galactic magnetic field. We detect rotation measure variations with a period of one year in some pulsars but overall find that the variations in these parameters are more consistent with a stochastic origin.arXiv:2104.05723oai:cds.cern.ch:27644792021-04-12 |
| spellingShingle | astro-ph.SR Astrophysics and Astronomy Wahl, H.M. McLaughlin, M.A. Gentile, P.A. Jones, M.L. Spiewak, R. Arzoumanian, Z. Crowter, K. Demorest, P.B. DeCesar, M.E. Dolch, T. Ellis, J.A. Ferdman, R.D. Ferrara, E.C. Fonseca, E. Garver-Daniels, N. Jones, G. Lam, M.T. Levin, L. Lewandowska, N. Lorimer, D.R. Lynch, R.S. Madison, D.R. Ng, C. Nice, D.J. Pennucci, T.T. Ransom, S.M. Ray, P. Stairs, I.H. Stovall, K. Swiggum, J.K. Zhu, W.W. The NANOGrav 12.5-Year Data Set: Polarimetry, Rotation Measures, and Galactic Magnetic Field Strengths from NANOGrav Observations with the Green Bank Telescope |
| title | The NANOGrav 12.5-Year Data Set: Polarimetry, Rotation Measures, and Galactic Magnetic Field Strengths from NANOGrav Observations with the Green Bank Telescope |
| title_full | The NANOGrav 12.5-Year Data Set: Polarimetry, Rotation Measures, and Galactic Magnetic Field Strengths from NANOGrav Observations with the Green Bank Telescope |
| title_fullStr | The NANOGrav 12.5-Year Data Set: Polarimetry, Rotation Measures, and Galactic Magnetic Field Strengths from NANOGrav Observations with the Green Bank Telescope |
| title_full_unstemmed | The NANOGrav 12.5-Year Data Set: Polarimetry, Rotation Measures, and Galactic Magnetic Field Strengths from NANOGrav Observations with the Green Bank Telescope |
| title_short | The NANOGrav 12.5-Year Data Set: Polarimetry, Rotation Measures, and Galactic Magnetic Field Strengths from NANOGrav Observations with the Green Bank Telescope |
| title_sort | nanograv 12.5-year data set: polarimetry, rotation measures, and galactic magnetic field strengths from nanograv observations with the green bank telescope |
| topic | astro-ph.SR Astrophysics and Astronomy |
| url | http://cds.cern.ch/record/2764479 |
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