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Employment (1)

George Mason University: Fairfax, VA, US

2017-08-01 to present | Graduate Research Assistant (Physics and Astronomy)
Employment
Source: Self-asserted source
Ryan W. Pfeifle

Education and qualifications (2)

George Mason University: Fairfax, VA, US

2017-06-01 to present | Physics, Ph.D (Physics and Astronomy)
Education
Source: Self-asserted source
Ryan W. Pfeifle

George Mason University: Fairfax, VA, US

2013-06-01 to 2017-05-17 | Bachelors of Science, Physics (Physics and Astronomy)
Education
Source: Self-asserted source
Ryan W. Pfeifle

Works (12)

A Serendipitous Observation of the Recently Discovered Cataclysmic Variable TUVO-21acq

Publications of the Astronomical Society of the Pacific
2024-05-01 | Journal article
DOI: 10.1088/1538-3873/ad4592
Contributors: Lynne A. Valencic; Kimberly A. Weaver; K. D. Kuntz; Jenna M. Cann; Ryan W. Pfeifle
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Exploring X-Ray Properties of Low-metallicity Dwarf Galaxies

The Astrophysical Journal
2024-02-01 | Journal article
DOI: 10.3847/1538-4357/ad0a6b
Contributors: Jenna M. Cann; Kimberly A. Weaver; Ryan W. Pfeifle; Nathan J. Secrest; Shobita Satyapal; Mario Gliozzi
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Crossref

VaDAR: Varstrometry for Dual AGN Using Radio Interferometry

The Astrophysical Journal
2024-02-01 | Journal article
DOI: 10.3847/1538-4357/ad0ed0
Contributors: Emma Schwartzman; Tracy E. Clarke; Kristina Nyland; Nathan J. Secrest; Ryan W. Pfeifle; Henrique Schmitt; Shobita Satyapal; Barry Rothberg
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Crossref

NuSTAR Observations of Four Mid-IR–Selected Dual AGN Candidates in Galaxy Mergers

The Astrophysical Journal
2023-09-01 | Journal article
DOI: 10.3847/1538-4357/ace2c0
Contributors: Ryan W. Pfeifle; Kimberly Weaver; Shobita Satyapal; Claudio Ricci; Nathan J. Secrest; Mario Gliozzi; Laura Blecha; Barry Rothberg
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Crossref

Nuclear Activity in the Low-metallicity Dwarf Galaxy SDSS J0944-0038 : A Glimpse into the Primordial Universe

The Astrophysical Journal Letters
2023-04-01 | Journal article
DOI: 10.3847/2041-8213/acb4e4
Contributors: Michael Reefe; Shobita Satyapal; Remington O. Sexton; Nathan J. Secrest; William Matzko; Emma Schwartzman; Kristina Nyland; Gabriela Canalizo; Barry Rothberg; Ryan W. Pfeifle et al.
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Crossref

The Messy Nature of Fiber Spectra: Star–Quasar Pairs Masquerading as Dual Type 1 AGNs

The Astrophysical Journal
2023-03-01 | Journal article
DOI: 10.3847/1538-4357/acbd45
Contributors: Ryan W. Pfeifle; Barry Rothberg; Kimberly A. Weaver; Remington O. Sexton; Jenna M. Cann; Nathan J. Secrest; Michael A. Reefe; Thomas Bohn
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Crossref

NuSTAR Observes Two Bulgeless Galaxies: No Hard X-Ray AGN Detected in NGC 4178 or J0851+3926

The Astrophysical Journal
2023-02-01 | Journal article
DOI: 10.3847/1538-4357/aca7ff
Contributors: Ryan W. Pfeifle; Shobita Satyapal; Claudio Ricci; Nathan J. Secrest; Mario Gliozzi; Thomas Bohn; Gabriela Canalizo; Michael A. Reefe
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Crossref

BASS. XXIII. A New Mid-infrared Diagnostic for Absorption in Active Galactic Nuclei

The Astrophysical Journal Supplement Series
2022-07-01 | Journal article
DOI: 10.3847/1538-4365/ac5b65
Contributors: Ryan W. Pfeifle; Claudio Ricci; Peter G. Boorman; Marko Stalevski; Daniel Asmus; Benny Trakhtenbrot; Michael J. Koss; Daniel Stern; Federica Ricci; Shobita Satyapal et al.
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The Discovery of a Hidden Broad-line AGN in a Bulgeless Galaxy: Keck NIR Spectroscopic Observations of SDSS J085153.64+392611.76

The Astrophysical Journal
2020-08-01 | Journal article
DOI: 10.3847/1538-4357/aba52c
Contributors: Thomas Bohn; Gabriela Canalizo; Shobita Satyapal; Ryan W. Pfeifle
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Crossref

Multiwavelength Observations of SDSS J105621.45+313822.1, a Broad-line, Low-metallicity AGN

The Astrophysical Journal
2020-06-01 | Journal article
DOI: 10.3847/1538-4357/ab8b64
Contributors: Jenna M. Cann; Shobita Satyapal; Thomas Bohn; Remington O. Sexton; Ryan W. Pfeifle; Christina Manzano-King; Gabriela Canalizo; Barry Rothberg; Mario Gliozzi; Nathan J. Secrest et al.
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Crossref

A Triple AGN in a Mid-infrared Selected Late-stage Galaxy Merger

The Astrophysical Journal
2019-10-01 | Journal article
DOI: 10.3847/1538-4357/ab3a9b
Contributors: Ryan W. Pfeifle; Shobita Satyapal; Christina Manzano-King; Jenna Cann; Remington O. Sexton; Barry Rothberg; Gabriela Canalizo; Claudio Ricci; Laura Blecha; Sara L. Ellison et al.
Source: check_circle
Crossref

Buried Black Hole Growth in IR-selected Mergers: New Results from Chandra

The Astrophysical Journal
2019-04-20 | Journal article
DOI: 10.3847/1538-4357/ab07bc
Contributors: Ryan W. Pfeifle; Shobita Satyapal; Nathan J. Secrest; Mario Gliozzi; Claudio Ricci; Sara L. Ellison; Barry Rothberg; Jenna Cann; Laura Blecha; James K. Williams et al.
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Crossref
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