Earnshaw, Hannah Penn

Combined from CaltechAUTHORS

Walton, D. J. and Bachetti, M., el al. (2025) A New Broadband Spectral State in the Ultraluminous X-ray Source Holmberg IX X-1; Monthly Notices of the Royal Astronomical Society; Vol. 543; No. 3; 2902-2916; 10.1093/mnras/staf1609
El Byad, Hamza and Bachetti, Matteo, el al. (2025) A NuSTAR Study of Quasiperiodic Oscillations from the Ultraluminous X-Ray Sources in M82; Astrophysical Journal; Vol. 989; No. 2; 202; 10.3847/1538-4357/aded8a
Singer, Leo P. and Criswell, Alexander W., el al. (2025) Optimal Follow-up of Gravitational-wave Events with the UltraViolet EXplorer (UVEX); Publications of the Astronomical Society of the Pacific; Vol. 137; No. 7; 074501; 10.1088/1538-3873/adcfc6
Criswell, Alexander W. and Leggio, Sydney C., el al. (2025) Electromagnetic Follow-up to Gravitational Wave Events with the UltraViolet EXplorer (UVEX); Publications of the Astronomical Society of the Pacific; Vol. 137; No. 5; 054101; 10.1088/1538-3873/adcd9c
Earnshaw, Hannah P. and Patti, Gauri, el al. (2025) The Long-Term Variability of a Population of ULXs Monitored by Chandra; Astronomische Nachrichten; Vol. 346; No. 1; e20240103; 10.1002/asna.20240103
Boorman, Peter G. and Stern, Daniel, el al. (2024) An Intermediate-mass Black Hole Hidden behind Thick Obscuration; Astrophysical Journal; Vol. 975; No. 2; 230; 10.3847/1538-4357/ad7f56
Earnshaw, Hannah P. and Bachetti, Matteo, el al. (2024) Return to the Forgotten Ultraluminous X-Ray Source: A Broadband NICER+NuSTAR Study of NGC 4190 ULX-1; Astrophysical Journal; Vol. 968; No. 2; 111; 10.3847/1538-4357/ad43d9
Grefenstette, Brian W. and Brightman, Murray, el al. (2023) Early Hard X-Rays from the Nearby Core-collapse Supernova SN 2023ixf; Astrophysical Journal Letters; Vol. 952; No. 1; L3; 10.3847/2041-8213/acdf4e
Brightman, Murray and Hameury, Jean-Marie, el al. (2023) A New Sample of Transient Ultraluminous X-Ray Sources Serendipitously Discovered by Swift/XRT; Astrophysical Journal; Vol. 951; No. 1; Art. No. 51; 10.3847/1538-4357/acd18a
Fürst, F. and Walton, D. J., el al. (2023) Probing the nature of the low state in the extreme ultraluminous X-ray pulsar NGC 5907 ULX1; Astronomy and Astrophysics; Vol. 672; Art. No. A140; 10.1051/0004-6361/202245048
Bachetti, Matteo and Heida, Marianne, el al. (2022) Orbital Decay in M82 X-2; Astrophysical Journal; Vol. 937; No. 2; Art. No. 125; 10.3847/1538-4357/ac8d67
Barra, F. and Pinto, C., el al. (2022) Unveiling the disc structure in ultraluminous X-ray source NGC 55 ULX-1; Monthly Notices of the Royal Astronomical Society; Vol. 516; No. 3; 3972-3983; 10.1093/mnras/stac2453
Earnshaw, Hannah P. and Greffe, Timothee, el al. (2022) High dynamic range techniques for astronomical applications of CMOS devices; ISBN 9781510653634; X-Ray, Optical, and Infrared Detectors for Astronomy X; 121910G; 10.1117/12.2630367
Earnshaw, Hannah P. and Brightman, Murray, el al. (2022) The Variability Behavior of NGC 925 ULX-3; Astrophysical Journal; Vol. 934; No. 1; Art. No. 42; 10.3847/1538-4357/ac79b0
Greffe, Timothee and Smith, Roger, el al. (2022) Characterization of low light performance of a complementary metal-oxide semiconductor sensor for ultraviolet astronomical applications; Journal of Astronomical Telescopes, Instruments, and Systems; Vol. 8; No. 2; Art. No. 026004; 10.1117/1.jatis.8.2.026004
Brightman, Murray and Kosec, Peter, el al. (2022) An 8.56 keV Absorption Line in the Hyperluminous X-Ray Source in NGC 4045: Ultrafast Outflow or Cyclotron Line?; Astrophysical Journal; Vol. 929; No. 2; Art. No. 138; 10.3847/1538-4357/ac5e37
Earnshaw, Hannah P. and Madsen, Kristin K., el al. (2022) Reconstruction of the NuSTAR PSF Using Single-laser Metrology; ISBN 978-1-6654-3760-8; 2022 IEEE Aerospace Conference (AERO); 1-8; 10.1109/aero53065.2022.9843468
Brightman, Murray and Bachetti, Matteo, el al. (2022) Evolution of the Spin, Spectrum and Superorbital Period of the Ultraluminous X-Ray Pulsar M51 ULX7; Astrophysical Journal; Vol. 925; No. 1; Art. No. 18; 10.3847/1538-4357/ac3829
Earnshaw, Hannah P. and Madsen, Kristin K., el al. (2022) Reconstruction of the NuSTAR point spread function using single-laser metrology; Journal of Astronomical Telescopes, Instruments, and Systems; Vol. 8; No. 1; Art. No. 014009; 10.1117/1.jatis.8.1.014009
Walton, D. J. and Mackenzie, A. D. A., el al. (2022) A multimission catalogue of ultraluminous X-ray source candidates; Monthly Notices of the Royal Astronomical Society; Vol. 509; No. 2; 1587-1604; 10.1093/mnras/stab3001
Greffe, Timothee and Smith, Roger, el al. (2021) Characterization of Low Light Performance of a CMOS sensor for Ultraviolet Astronomical Applications; 10.48550/arXiv.2112.01691
Bachetti, Matteo and Heida, Marianne, el al. (2021) The extreme mass transfer and high magnetic field of the first ultraluminous pulsar M82 X-2; 10.48550/arXiv.2112.00339
Kulkarni, S. R. and Harrison, Fiona A., el al. (2021) Science with the Ultraviolet Explorer (UVEX); 10.48550/arXiv.2111.15608
Robba, A. and Pinto, C., el al. (2021) Broadband X-ray spectral variability of the pulsing ULX NGC 1313 X-2; Astronomy and Astrophysics; Vol. 652; Art. No. A118; 10.1051/0004-6361/202140884
Alston, W. N. and Pinto, C., el al. (2021) Quasi-periodic dipping in the ultraluminous X-ray source, NGC 247 ULX-1; Monthly Notices of the Royal Astronomical Society; Vol. 505; No. 3; 3722-3729; 10.1093/mnras/stab1473
Pinto, C. and Soria, R., el al. (2021) XMM-Newton campaign on the ultraluminous X-ray source NGC 247 ULX-1: outflows; Monthly Notices of the Royal Astronomical Society; Vol. 505; No. 4; 5058-5074; 10.1093/mnras/stab1648
Fürst, F. and Walton, D. J., el al. (2021) Long-term pulse period evolution of the ultra-luminous X-ray pulsar NGC 7793 P13; Astronomy and Astrophysics; Vol. 651; Art. No. A75; 10.1051/0004-6361/202140625
Connor, Thomas and Bañados, Eduardo, el al. (2021) Enhanced X-Ray Emission from the Most Radio-powerful Quasar in the Universe's First Billion Years; Astrophysical Journal; Vol. 911; No. 2; Art. No. 120; 10.3847/1538-4357/abe710
Vasilopoulos, Georgios and Koliopanos, Filippos, el al. (2021) Chandra Probes the X-Ray Variability of M51 ULX-7: Evidence of Propeller Transition and X-Ray Dips on Orbital Periods; Astrophysical Journal; Vol. 909; No. 1; Art. No. 50; 10.3847/1538-4357/abda49
Walton, D. J. and Heida, M., el al. (2021) A new transient ultraluminous X-ray source in NGC 7090; Monthly Notices of the Royal Astronomical Society; Vol. 501; No. 1; 1002-1012; 10.1093/mnras/staa3666
Brightman, Murray and Earnshaw, Hannah, el al. (2020) Swift Monitoring of M51: A 38 day Superorbital Period for the Pulsar ULX7 and a New Transient Ultraluminous X-Ray Source; Astrophysical Journal; Vol. 895; No. 2; Art. No. 127; 10.3847/1538-4357/ab7e2a
Walton, D. J. and Pinto, C., el al. (2020) The unusual broad-band X-ray spectral variability of NGC 1313 X-1 seen with XMM–Newton, Chandra, and NuSTAR; Monthly Notices of the Royal Astronomical Society; Vol. 494; No. 4; 6012-6029; 10.1093/mnras/staa1129
Rodríguez Castillo, G. A. and Israel, G. L., el al. (2020) Discovery of a 2.8 s Pulsar in a 2 Day Orbit High-mass X-Ray Binary Powering the Ultraluminous X-Ray Source ULX-7 in M51; Astrophysical Journal; Vol. 895; No. 1; Art. No. 60; 10.3847/1538-4357/ab8a44
Earnshaw, Hannah P. and Heida, Marianne, el al. (2020) The (Re)appearance of NGC 925 ULX-3, a New Transient ULX; Astrophysical Journal; Vol. 891; No. 2; Art. No. 153; 10.3847/1538-4357/ab77b8
Pinto, C. and Walton, D. J., el al. (2020) XMM-Newton campaign on ultraluminous X-ray source NGC 1313 X-1: wind versus state variability; Monthly Notices of the Royal Astronomical Society; Vol. 492; No. 4; 4646-4665; 10.1093/mnras/staa118
Pintore, F. and Marelli, M., el al. (2020) The Ultraluminous X-Ray Sources Population of the Galaxy NGC 7456; Astrophysical Journal; Vol. 890; No. 2; Art. No. 166; 10.3847/1538-4357/ab6ffd
Kara, E. and Pinto, C., el al. (2020) Discovery of a soft X-ray lag in the ultraluminous X-ray source NGC 1313 X-1; Monthly Notices of the Royal Astronomical Society; Vol. 491; No. 4; 5172-5178; 10.1093/mnras/stz3318
Brightman, Murray and Walton, Dominic J., el al. (2020) Spectral Evolution of the Ultraluminous X-Ray Sources M82 X-1 and X-2; Astrophysical Journal; Vol. 889; No. 1; Art. No. 71; 10.3847/1538-4357/ab629a
Song, X. and Walton, D. J., el al. (2020) Hunt for Pulsating Ultraluminous X-ray Sources; Monthly Notices of the Royal Astronomical Society; Vol. 491; No. 1; 1260-1277; 10.1093/mnras/stz3036
Sathyaprakash, R. and Roberts, T. P., el al. (2019) The discovery of weak coherent pulsations in the ultraluminous X-ray source NGC 1313 X-2; Monthly Notices of the Royal Astronomical Society: Letters; Vol. 488; No. 1; L35-L40; 10.1093/mnrasl/slz086
Earnshaw, Hannah P. and Grefenstette, Brian W., el al. (2019) A broadband look at the old and new ULXs of NGC 6946; Astrophysical Journal; Vol. 881; No. 1; Art. No. 38; 10.3847/1538-4357/ab20cd
Brightman, M. and Bachetti, M., el al. (2019) Breaking the limit: Super-Eddington accretion onto black holes and neutron stars; 10.48550/arXiv.1903.06844
Earnshaw, H. P. and Roberts, T. P., el al. (2019) A new, clean catalogue of extragalactic non-nuclear X-ray sources in nearby galaxies; Monthly Notices of the Royal Astronomical Society; Vol. 483; No. 4; 5554-5573; 10.1093/mnras/sty3403
Brightman, M. and Baloković, M., el al. (2018) A Long Hard-X-Ray Look at the Dual Active Galactic Nuclei of M51 with NuSTAR; Astrophysical Journal; Vol. 867; No. 2; Art. No. 110; 10.3847/1538-4357/aae1ae
Earnshaw, H. P. and Roberts, T. P., el al. (2018) Searching for propeller-phase ULXs in the XMM–Newton Serendipitous Source Catalogue; Monthly Notices of the Royal Astronomical Society; Vol. 476; No. 3; 4272-4277; 10.1093/mnras/sty501
Earnshaw, H. M. (2016) An intermediate-mass black hole candidate in M51?; Astronomische Nachrichten; Vol. 337; No. 4-5; 448-453; 10.1002/asna.201612328
Earnshaw, Hannah M. and Roberts, Timothy P., el al. (2016) A variable ULX and possible IMBH candidate in M51a; Monthly Notices of the Royal Astronomical Society; Vol. 456; No. 4; 3840-3854; 10.1093/mnras/stv2945