Personal information

United States

Activities

Employment (2)

Wayne State University: Detroit, US

2022-08-16 to present | Assistant Professor (Physics and Astronomy)
Employment
Source: Self-asserted source
Renee Ludlam

University of Michigan: Pasadena, California, US

2019-09-01 to 2022-08-01 | NHFP/Einstein Postdoctoral Fellow (Astronomy and Astrophysics)
Employment
Source: Self-asserted source
Renee Ludlam

Education and qualifications (2)

University of Michigan: Ann Arbor, MI, US

2015-09-01 to 2019-03-25 | PhD (Astronomy and Astrophysics)
Education
Source: Self-asserted source
Renee Ludlam

Wayne State University: Detroit, MI, US

2010-09-01 to 2015-05-31 | B.S. (Physics), B.A. (Astronomy) (Physics and Astronomy)
Education
Source: Self-asserted source
Renee Ludlam

Works (45)

Simultaneous NICER and NuSTAR Observations of the Neutron Star Low-mass X-Ray Binary Serpens X-1

The Astrophysical Journal
2025-02-20 | Journal article
Contributors: H. Hall; R. M. Ludlam; J. M. Miller; A. C. Fabian; J. A. Tomsick; J. Coley; J. A. García; B. M. Coughenour
Source: check_circle
Crossref

A Spectro-temporal View of Normal Branch Oscillations in Cygnus X-2 as Seen by NICER and NuSTAR

The Astrophysical Journal
2025-01-01 | Journal article
Contributors: Malu Sudha; Renee M. Ludlam; Diego Altamirano; Edward M. Cackett; Jeremy Hare
Source: check_circle
Crossref

X-ray spectropolarimetric characterization of GX 340+0 in the horizontal branch: A highly inclined source?

Astronomy & Astrophysics
2024-11 | Journal article
Contributors: Fabio La Monaca; Alessandro Di Marco; Renee M. Ludlam; Anna Bobrikova; Juri Poutanen; Songwei Li; Fei Xie
Source: check_circle
Crossref

A View of the Long-term Spectral Behavior of Ultracompact X-Ray Binary 4U 0614+091

The Astrophysical Journal
2024-11-01 | Journal article
Contributors: D. L. Moutard; R. M. Ludlam; E. M. Cackett; J. A. García; J. M. Miller; D. R. Wilkins
Source: check_circle
Crossref

NICER Observes the Full Z-track in GX 13+1

Research Notes of the AAS
2024-09-25 | Journal article
Contributors: Mohamad Ali Kaddouh; Malu Sudha; Renee M. Ludlam
Source: check_circle
Crossref

Investigating the Ultracompact X-Ray Binary Candidate SLX 1735-269 with NICER and NuSTAR

The Astrophysical Journal
2024-06-01 | Journal article
Contributors: D. L. Moutard; R. M. Ludlam; M. Sudha; D. J. K. Buisson; E. M. Cackett; N. Degenaar; A. C. Fabian; P. Gandhi; J. A. García; A. W. Shaw et al.
Source: check_circle
Crossref

Return to the Forgotten Ultraluminous X-Ray Source: A Broadband NICER+NuSTAR Study of NGC 4190 ULX-1

The Astrophysical Journal
2024-06-01 | Journal article
Contributors: Hannah P. Earnshaw; Matteo Bachetti; Murray Brightman; Felix Fürst; Fiona A. Harrison; Matthew Middleton; Renee Ludlam; Sean N. Pike; Daniel Stern; Dominic J. Walton
Source: check_circle
Crossref

Simultaneous NICER and NuSTAR Observations of the Ultracompact X-Ray Binary 4U 0614+091

The Astrophysical Journal
2023-11-01 | Journal article
Contributors: D. L. Moutard; R. M. Ludlam; J. A. García; D. Altamirano; D. J. K. Buisson; E. M. Cackett; J. Chenevez; N. Degenaar; A. C. Fabian; J. Homan et al.
Source: check_circle
Crossref

Reflection and Timing Study of the Transient Black Hole X-Ray Binary MAXI J1803-298 with NuSTAR

The Astrophysical Journal
2023-06-01 | Journal article
Contributors: Benjamin M. Coughenour; John A. Tomsick; Guglielmo Mastroserio; James F. Steiner; Riley M. T. Connors; Jiachen Jiang; Jeremy Hare; Aarran W. Shaw; Renee M. Ludlam; A. C. Fabian et al.
Source: check_circle
Crossref

Revealing the Spectral State Transition of the Clocked Burster, GS 1826-238, with NuSTAR StrayCats

The Astrophysical Journal
2023-04-01 | Journal article
Contributors: S. B. Yun; B. W. Grefenstette; R. M. Ludlam; M. C. Brumback; D. J. K. Buisson; G Mastroserio; S. N. Pike
Source: check_circle
Crossref

NuSTAR Spectral Analysis beyond 79 keV with Stray Light

The Astrophysical Journal
2022-12-01 | Journal article
Contributors: G. Mastroserio; B. W. Grefenstette; P. Thalhammer; D. J. K. Buisson; M. C. Brumback; R. M. Ludlam; R. M. T. Connors; J. A. García; V. Grinberg; K. K. Madsen et al.
Source: check_circle
Crossref

Burst–Disk Interaction in 4U 1636–536 as Observed by NICER

The Astrophysical Journal
2022-08-01 | Journal article
Contributors: Tolga Güver; Z. Funda Bostancı; Tuğba Boztepe; Ersin Göğüş; Peter Bult; Unnati Kashyap; Manoneeta Chakraborty; David R. Ballantyne; R. M. Ludlam; C. Malacaria et al.
Source: check_circle
Crossref

StrayCats. II. An Updated Catalog of NuSTAR Stray Light Observations

The Astrophysical Journal
2022-07-01 | Journal article
Contributors: R. M. Ludlam; B. W. Grefenstette; M. C. Brumback; J. A. Tomsick; D. J. K. Buisson; B. M. Coughenour; G Mastroserio; D. Wik; R. Krivonos; A. D. Jaodand et al.
Source: check_circle
Crossref

Radius Constraints from Reflection Modeling of Cygnus X-2 with NuSTAR and NICER

The Astrophysical Journal
2022-03-01 | Journal article
Contributors: R. M. Ludlam; E. M. Cackett; J. A. García; J. M. Miller; A. L. Stevens; A. C. Fabian; J. Homan; M. Ng; S. Guillot; D. J. K. Buisson et al.
Source: check_circle
Crossref

A Spectroscopic Angle on Central Engine Size Scales in Accreting Neutron Stars

The Astrophysical Journal
2022-02-01 | Journal article
Contributors: Nicolas Trueba; J. M. Miller; A. C. Fabian; J. Kaastra; T. Kallman; A. Lohfink; R. M. Ludlam; D. Proga; J. Raymond; C. Reynolds et al.
Source: check_circle
Crossref

Extending the Baseline for SMC X-1's Spin and Orbital Behavior with NuSTAR Stray Light

The Astrophysical Journal
2022-02-01 | Journal article
Contributors: McKinley C. Brumback; Brian W. Grefenstette; Douglas J. K. Buisson; Matteo Bachetti; Riley Connors; Javier A. García; Amruta Jaodand; Roman Krivonos; Renee Ludlam; Kristin K. Madsen et al.
Source: check_circle
Crossref

Relativistic X-Ray Reflection Models for Accreting Neutron Stars

The Astrophysical Journal
2022-02-01 | Journal article
Contributors: Javier A. García; Thomas Dauser; Renee Ludlam; Michael Parker; Andrew Fabian; Fiona A. Harrison; Jörn Wilms
Source: check_circle
Crossref

A Comprehensive X-Ray Report on AT2019wey

The Astrophysical Journal
2021-10-01 | Journal article
Contributors: Yuhan Yao; S. R. Kulkarni; K. C. Gendreau; Gaurava K. Jaisawal; Teruaki Enoto; Brian W. Grefenstette; Herman L. Marshall; Javier A. García; R. M. Ludlam; Sean N. Pike et al.
Source: check_circle
Crossref

Photospheric Radius Expansion and a Double-peaked Type-I X-Ray Burst from GRS 1741.9–2853

The Astrophysical Journal
2021-09-01 | Journal article
Contributors: Sean N. Pike; Fiona A. Harrison; John A. Tomsick; Matteo Bachetti; Douglas J. K. Buisson; Javier A. García; Jiachen Jiang; R. M. Ludlam; Kristin K. Madsen
Source: check_circle
Crossref

Simultaneous NICER and NuSTAR Observations of the Ultracompact X-Ray Binary 4U 1543–624

The Astrophysical Journal
2021-04-01 | Journal article
Contributors: R. M. Ludlam; A. D. Jaodand; J. A. García; N. Degenaar; J. A. Tomsick; E. M. Cackett; A. C. Fabian; P. Gandhi; D. J. K. Buisson; A. W. Shaw et al.
Source: check_circle
Crossref

StrayCats: A Catalog of NuSTAR Stray Light Observations

The Astrophysical Journal
2021-03-01 | Journal article
Contributors: Brian W. Grefenstette; Renee M. Ludlam; Ellen T. Thompson; Javier A. García; Jeremy Hare; Amruta D. Jaodand; Roman A. Krivonos; Kristin K. Madsen; Guglielmo Mastroserio; Catherine M. Slaughter et al.
Source: check_circle
Crossref

Relativistic Reflection and Reverberation in GX 339–4 with NICER and NuSTAR

The Astrophysical Journal
2020-08-01 | Journal article
Contributors: Jingyi Wang; Erin Kara; James F. Steiner; Javier A. García; Jeroen Homan; Joseph Neilsen; Grégoire Marcel; Renee M. Ludlam; Francesco Tombesi; Edward M. Cackett et al.
Source: check_circle
Crossref

NICER–NuSTAR Observations of the Neutron Star Low-mass X-Ray Binary 4U 1735–44

The Astrophysical Journal
2020-05-01 | Journal article
Contributors: R. M. Ludlam; E. M. Cackett; J. A. García; J. M. Miller; P. M. Bult; T. E. Strohmayer; S. Guillot; G. K. Jaisawal; C. Malacaria; A. C. Fabian et al.
Source: check_circle
Crossref

A NICER View of Spectral and Profile Evolution for Three X-Ray-emitting Millisecond Pulsars

The Astrophysical Journal
2020-04-01 | Journal article
Contributors: Dominick M. Rowan; Zaynab Ghazi; Lauren Lugo; Elizabeth Spano; Andrea Lommen; Alice Harding; Christo Venter; Renee Ludlam; Paul S. Ray; Matthew Kerr et al.
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Crossref

A NICER View of PSR J0030+0451: Millisecond Pulsar Parameter Estimation

The Astrophysical Journal Letters
2019-12-10 | Journal article
Contributors: T. E. Riley; A. L. Watts; S. Bogdanov; P. S. Ray; R. M. Ludlam; S. Guillot; Z. Arzoumanian; C. L. Baker; A. V. Bilous; D. Chakrabarty et al.
Source: check_circle
Crossref

Constraining the Neutron Star Mass–Radius Relation and Dense Matter Equation of State with NICER. I. The Millisecond Pulsar X-Ray Data Set

The Astrophysical Journal Letters
2019-12-10 | Journal article
Contributors: Slavko Bogdanov; Sebastien Guillot; Paul S. Ray; Michael T. Wolff; Deepto Chakrabarty; Wynn C. G. Ho; Matthew Kerr; Frederick K. Lamb; Andrea Lommen; Renee M. Ludlam et al.
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Crossref

Quasi-simultaneous INTEGRAL, SWIFT, and NuSTAR Observations of the New X-Ray Clocked Burster 1RXS J180408.9-342058

The Astrophysical Journal
2019-12-10 | Journal article
Contributors: M. Fiocchi; A. Bazzano; G. Bruni; R. Ludlam; L. Natalucci; F. Onori; P. Ubertini
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Crossref

An Evolving Broad Iron Line from the First Galactic Ultraluminous X-Ray Pulsar Swift J0243.6+6124

The Astrophysical Journal
2019-10-25 | Journal article
Contributors: Gaurava K. Jaisawal; Colleen A. Wilson-Hodge; Andrew C. Fabian; Sachindra Naik; Deepto Chakrabarty; Peter Kretschmar; David R. Ballantyne; Renee M. Ludlam; Jérôme Chenevez; Diego Altamirano et al.
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Crossref

A NICER Look at Strong X-Ray Obscuration in the Seyfert-2 Galaxy NGC 4388

The Astrophysical Journal
2019-10-20 | Journal article
Contributors: J. M. Miller; E. Kammoun; R. M. Ludlam; K. Gendreau; Z. Arzoumanian; E. Cackett; F. Tombesi
Source: check_circle
Crossref

Observations of the Ultra-compact X-Ray Binary 4U 1543-624 in Outburst with NICER, INTEGRAL, Swift, and ATCA

The Astrophysical Journal
2019-09-20 | Journal article
Contributors: R. M. Ludlam; L. Shishkovsky; P. M. Bult; J. M. Miller; A. Zoghbi; T. E. Strohmayer; M. Reynolds; L. Natalucci; J. C. A. Miller-Jones; G. K. Jaisawal et al.
Source: check_circle
Crossref

NuSTAR Observations of the Accreting Atolls GX 3+1, 4U 1702-429, 4U 0614+091, and 4U 1746-371

The Astrophysical Journal
2019-03-01 | Journal article
Contributors: R. M. Ludlam; J. M. Miller; D. Barret; E. M. Cackett; B. M. Coughenour; T. Dauser; N. Degenaar; J. A. García; F. A. Harrison; F. Paerels
Source: check_circle
Crossref

Absence of Reflection Features in NuSTAR Spectra of the Luminous Neutron Star X-Ray Binary GX 5-1

Astrophysical Journal
2018 | Journal article
EID:

2-s2.0-85041924547

Contributors: Homan, J.; Steiner, J.F.; Lin, D.; Fridriksson, J.K.; Remillard, R.A.; Miller, J.M.; Ludlam, R.M.
Source: Self-asserted source
Renee Ludlam via Scopus - Elsevier

NICER Observes the Effects of an X-Ray Burst on the Accretion Environment in Aql X-1

Astrophysical Journal Letters
2018 | Journal article
EID:

2-s2.0-85043451649

Contributors: Keek, L.; Arzoumanian, Z.; Bult, P.; Cackett, E.M.; Chakrabarty, D.; Chenevez, J.; Fabian, A.C.; Gendreau, K.C.; Guillot, S.; Güver, T. et al.
Source: Self-asserted source
Renee Ludlam via Scopus - Elsevier

A NuSTAR Observation of the Low-mass X-Ray Binary GX 349+2 throughout the Z-track

The Astrophysical Journal
2018-11-01 | Journal article
Contributors: Benjamin M. Coughenour; Edward M. Cackett; Jon M. Miller; Renee M. Ludlam
Source: check_circle
Crossref

A Persistent Disk Wind in GRS 1915+105 with NICER

The Astrophysical Journal
2018-06 | Journal article
Contributors: Neilsen, J.; Cackett, E.; Remillard, R. A.; Homan, J.; Steiner, J. F.; Gendreau, K.; Arzoumanian, Z.; Prigozhin, G.; LaMarr, B.; Doty, J. et al.
Source: check_circle
NASA Astrophysics Data System

NICER Detects a Soft X-Ray Kilohertz Quasi-periodic Oscillation in 4U 0614+09

The Astrophysical Journal
2018-06 | Journal article
Contributors: Bult, Peter; Altamirano, Diego; Arzoumanian, Zaven; Cackett, Edward M.; Chakrabarty, Deepto; Doty, John; Enoto, Teruaki; Gendreau, Keith C.; Guillot, Sebastien; Homan, Jeroen et al.
Source: check_circle
NASA Astrophysics Data System

A NICER Look at the Aql X-1 Hard State

The Astrophysical Journal
2018-05 | Journal article
Contributors: Bult, Peter; Arzoumanian, Zaven; Cackett, Edward M.; Chakrabarty, Deepto; Gendreau, Keith C.; Guillot, Sebastien; Homan, Jeroen; Jaisawal, Gaurava K.; Keek, Laurens; Kenyon, Steve et al.
Source: check_circle
NASA Astrophysics Data System

Detection of Reflection Features in the Neutron Star Low-mass X-Ray Binary Serpens X-1 with NICER

The Astrophysical Journal Letters
2018-05-01 | Journal article
Contributors: R. M. Ludlam; J. M. Miller; Z. Arzoumanian; P. M. Bult; E. M. Cackett; D. Chakrabarty; T. Dauser; T. Enoto; A. C. Fabian; J. A. García et al.
Source: check_circle
Crossref

A Hard Look at the Neutron Stars and Accretion Disks in 4U 1636-53, GX 17+2, and 4U 1705-44 with NuStar

Astrophysical Journal
2017 | Journal article
EID:

2-s2.0-85014577810

Contributors: Ludlam, R.M.; Miller, J.M.; Bachetti, M.; Barret, D.; Bostrom, A.C.; Cackett, E.M.; Degenaar, N.; Salvo, T.D.; Natalucci, L.; Tomsick, J.A. et al.
Source: Self-asserted source
Renee Ludlam via Scopus - Elsevier

Relativistic Disk Reflection in the Neutron Star X-Ray BinaryXTE J1709-267 with NuSTAR

Astrophysical Journal
2017 | Journal article
EID:

2-s2.0-85017324142

Contributors: Ludlam, R.M.; Miller, J.M.; Cackett, E.M.; Degenaar, N.; Bostrom, A.C.
Source: Self-asserted source
Renee Ludlam via Scopus - Elsevier

Truncation of the Accretion Disk at One-third of the Eddington Limit in the Neutron Star Low-mass X-Ray Binary Aquila X-1

Astrophysical Journal
2017 | Journal article
EID:

2-s2.0-85031093745

Contributors: Ludlam, R.M.; Miller, J.M.; Degenaar, N.; Sanna, A.; Cackett, E.M.; Altamirano, D.; King, A.L.
Source: Self-asserted source
Renee Ludlam via Scopus - Elsevier

Disc reflection and a possible disc wind during a soft X-ray state in the neutron star low-mass X-ray binary 1RXS J180408.9-342058

Monthly Notices of the Royal Astronomical Society
2016 | Journal article
EID:

2-s2.0-84988660494

Contributors: Degenaar, N.; Altamirano, D.; Parker, M.; Miller-Jones, J.C.A.; Miller, J.M.; Heinke, C.O.; Wijnands, R.; Ludlam, R.; Parikh, A.; Hessels, J.W.T. et al.
Source: Self-asserted source
Renee Ludlam via Scopus - Elsevier

NUSTAR and XMM-NEWTON OBSERVATIONS of the NEUTRON STAR X-RAY BINARY 1RXS J180408.9-34205

Astrophysical Journal
2016 | Journal article
EID:

2-s2.0-84976349102

Contributors: Ludlam, R.M.; Miller, J.M.; Cackett, E.M.; Fabian, A.C.; Bachetti, M.; Parker, M.L.; Tomsick, J.A.; Barret, D.; Natalucci, L.; Rana, V. et al.
Source: Self-asserted source
Renee Ludlam via Scopus - Elsevier

REAPPROACHING THE SPIN ESTIMATE OF GX 339-4

Astrophysical Journal
2015 | Journal article
EID:

2-s2.0-84933567927

Contributors: Ludlam, R.M.; Miller, J.M.; Cackett, E.M.
Source: Self-asserted source
Renee Ludlam via Scopus - Elsevier

X-ray spectral and variability properties of low-mass active galactic nuclei

Monthly Notices of the Royal Astronomical Society
2015 | Journal article
EID:

2-s2.0-84942164909

Contributors: Ludlam, R.M.; Cackett, E.M.; Gültekin, K.; Fabian, A.C.; Gallo, L.; Miniutti, G.
Source: Self-asserted source
Renee Ludlam via Scopus - Elsevier