PSR J1947−1120: A New Huntsman Millisecond Pulsar Binary
We present the discovery of PSR J1947–1120, a new huntsman millisecond pulsar with a red giant companion star in a 10.3 day orbit. This pulsar was found via optical, X-ray, and radio follow-up of the previously unassociated γ -ray source 4FGL J1947.6–1121. PSR J1947–1120 is the second confirmed puls...
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| Language: | English |
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2025-01-01
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| Series: | The Astrophysical Journal |
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| Online Access: | https://doi.org/10.3847/1538-4357/ada897 |
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| author | Jay Strader Paul S. Ray Ryan Urquhart Samuel J. Swihart Laura Chomiuk Elias Aydi Eric C. Bellm Kristen C. Dage Megan E. DeCesar Julia S. Deneva Maura A. McLaughlin Isabella Molina Teresa Panurach Kirill V. Sokolovsky |
| author_facet | Jay Strader Paul S. Ray Ryan Urquhart Samuel J. Swihart Laura Chomiuk Elias Aydi Eric C. Bellm Kristen C. Dage Megan E. DeCesar Julia S. Deneva Maura A. McLaughlin Isabella Molina Teresa Panurach Kirill V. Sokolovsky |
| author_sort | Jay Strader |
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| description | We present the discovery of PSR J1947–1120, a new huntsman millisecond pulsar with a red giant companion star in a 10.3 day orbit. This pulsar was found via optical, X-ray, and radio follow-up of the previously unassociated γ -ray source 4FGL J1947.6–1121. PSR J1947–1120 is the second confirmed pulsar in the huntsman class and establishes this as a bona fide subclass of millisecond pulsars. We use MESA models to show that huntsman pulsars can be naturally explained as neutron star binaries whose secondaries are currently in the “red bump” region of the red giant branch, temporarily underfilling their Roche lobes and hence halting mass transfer. Huntsman pulsars offer a new view of the formation of typical millisecond pulsars, allowing novel constraints on the efficiency of mass transfer and recycling at an intermediate stage in the process. |
| format | Article |
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| institution | Kabale University |
| issn | 1538-4357 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | IOP Publishing |
| record_format | Article |
| series | The Astrophysical Journal |
| spelling | doaj-art-6c23250a716048bb8e422cae3f2b1d3c2025-02-07T08:55:56ZengIOP PublishingThe Astrophysical Journal1538-43572025-01-01980112410.3847/1538-4357/ada897PSR J1947−1120: A New Huntsman Millisecond Pulsar BinaryJay Strader0https://orcid.org/0000-0002-1468-9668Paul S. Ray1https://orcid.org/0000-0002-5297-5278Ryan Urquhart2https://orcid.org/0000-0003-1814-8620Samuel J. Swihart3https://orcid.org/0000-0003-1699-8867Laura Chomiuk4https://orcid.org/0000-0002-8400-3705Elias Aydi5https://orcid.org/0000-0001-8525-3442Eric C. Bellm6https://orcid.org/0000-0001-8018-5348Kristen C. Dage7https://orcid.org/0000-0002-8532-4025Megan E. DeCesar8https://orcid.org/0000-0002-2185-1790Julia S. Deneva9https://orcid.org/0000-0003-1226-0793Maura A. McLaughlin10https://orcid.org/0000-0001-7697-7422Isabella Molina11https://orcid.org/0009-0004-4418-0645Teresa Panurach12https://orcid.org/0000-0001-8424-2848Kirill V. Sokolovsky13https://orcid.org/0000-0001-5991-6863Center for Data Intensive and Time Domain Astronomy, Department of Physics and Astronomy, Michigan State University , East Lansing, MI 48824, USA ; straderj@msu.eduSpace Science Division, U.S. Naval Research Laboratory , Washington, DC 20375, USACenter for Data Intensive and Time Domain Astronomy, Department of Physics and Astronomy, Michigan State University , East Lansing, MI 48824, USA ; straderj@msu.eduScience, Systems and Sustainment Division, Institute for Defense Analyses , Alexandria, VA 22305, USACenter for Data Intensive and Time Domain Astronomy, Department of Physics and Astronomy, Michigan State University , East Lansing, MI 48824, USA ; straderj@msu.eduCenter for Data Intensive and Time Domain Astronomy, Department of Physics and Astronomy, Michigan State University , East Lansing, MI 48824, USA ; straderj@msu.eduDIRAC Institute, Department of Astronomy, University of Washington , 3910 15th Avenue NE, Seattle, WA 98195, USAInternational Centre for Radio Astronomy Research, Curtin University , GPO Box U1987, Perth, WA 6845, AustraliaCollege of Science, George Mason University , Fairfax, VA 22030, USACollege of Science, George Mason University , Fairfax, VA 22030, USADepartment of Physics and Astronomy, West Virginia University , P.O. Box 6315, Morgantown, WV 26506, USA; Center for Gravitational Waves and Cosmology, West Virginia University , Chestnut Ridge Research Building, Morgantown, WV 26505, USACenter for Data Intensive and Time Domain Astronomy, Department of Physics and Astronomy, Michigan State University , East Lansing, MI 48824, USA ; straderj@msu.eduCenter for Data Intensive and Time Domain Astronomy, Department of Physics and Astronomy, Michigan State University , East Lansing, MI 48824, USA ; straderj@msu.edu; Norfolk State University , 700 Park Avenue, Norfolk, VA 23504, USADepartment of Astronomy, University of Illinois at Urbana-Champaign , 1002 W. Green Street, Urbana, IL 61801, USAWe present the discovery of PSR J1947–1120, a new huntsman millisecond pulsar with a red giant companion star in a 10.3 day orbit. This pulsar was found via optical, X-ray, and radio follow-up of the previously unassociated γ -ray source 4FGL J1947.6–1121. PSR J1947–1120 is the second confirmed pulsar in the huntsman class and establishes this as a bona fide subclass of millisecond pulsars. We use MESA models to show that huntsman pulsars can be naturally explained as neutron star binaries whose secondaries are currently in the “red bump” region of the red giant branch, temporarily underfilling their Roche lobes and hence halting mass transfer. Huntsman pulsars offer a new view of the formation of typical millisecond pulsars, allowing novel constraints on the efficiency of mass transfer and recycling at an intermediate stage in the process.https://doi.org/10.3847/1538-4357/ada897Neutron stars |
| spellingShingle | Jay Strader Paul S. Ray Ryan Urquhart Samuel J. Swihart Laura Chomiuk Elias Aydi Eric C. Bellm Kristen C. Dage Megan E. DeCesar Julia S. Deneva Maura A. McLaughlin Isabella Molina Teresa Panurach Kirill V. Sokolovsky PSR J1947−1120: A New Huntsman Millisecond Pulsar Binary The Astrophysical Journal Neutron stars |
| title | PSR J1947−1120: A New Huntsman Millisecond Pulsar Binary |
| title_full | PSR J1947−1120: A New Huntsman Millisecond Pulsar Binary |
| title_fullStr | PSR J1947−1120: A New Huntsman Millisecond Pulsar Binary |
| title_full_unstemmed | PSR J1947−1120: A New Huntsman Millisecond Pulsar Binary |
| title_short | PSR J1947−1120: A New Huntsman Millisecond Pulsar Binary |
| title_sort | psr j1947 1120 a new huntsman millisecond pulsar binary |
| topic | Neutron stars |
| url | https://doi.org/10.3847/1538-4357/ada897 |
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