BS
B. M. Schaefer
astro-ph.SRastro-phastro-ph.HEphysics.hist-phastro-ph.COastro-ph.GAastro-ph.EPphysics.pop-phastro-ph.IMhep-ex
On Valency
published · living versionsW_vyzjn5rm·v1 · currentpublished
Planck early results: Cluster Sunyaev-Zeldovich optical scaling relations
with Planck Collaboration, N. Aghanim, M. Arnaud, M. Ashdown +200
1 version
Preprints & journals
148 papers in the corpus · 1994–2026Classical Nova V1405 Cas Had and so is Unlikely to be a Type Ia Supernova Progenitor2609.10990v1 · Bradley E. Schaefer2026 · 0 citationsarXiv
Orbital Period Changes of Recurrent Nova T Pyxidis Demonstrate that M_ejecta >> 11.3xM_accreted and Is Not a Type Ia Supernova Progenitor2602.09377v1 · Bradley E. Schaefer2026 · 0 citationsarXiv
Symbiotic Stars (Including T Corona Borealis) Are Not Immediate Progenitors of Normal Type Ia Supernovae2511.19948v1 · Bradley E. Schaefer2025 · 2 citationsThe Astrophysical Journal, 994:187 (10pp), 2025 December 1
FQ Circini: An Ordinary Nova with a High-mass B1 V(n)(e) Companion Whose Decretion Disk Transfers Mass to the White Dwarf via Roche-Lobe Overflow2511.16594v2 · Bradley E. Schaefer, Andrew Pearce (AAVSO), Tom Love et al.2025 · 1 citationarXiv
Comprehensive Listing of 208 Nova White Dwarf Masses As the Primary Determinant of Spectral-Class and Light-Curve-Class2511.04787v1 · Bradley E. Schaefer2025 · 8 citationsApJ, 993, 232 (2025)
Orbital Period Changes in Recurrent Nova T Corona Borealis Prove That It Is Not a Type Ia Supernovae Progenitor2510.01587v1 · Bradley E. Schaefer2025 · 7 citationsApJ, 991, 111 (2025)
Orbital Period Changes of Recurrent Nova U Scorpii Demonstrate that M=26M and Is Not a Type Ia Supernova Progenitor2510.01589v1 · Bradley E. Schaefer, Gordon Myers (AAVSO)2025 · 0 citationsApJ, 991, 110 (2025)
HD 5501: A Rapidly Evolving Interacting Eclipsing Binary with a Variable Light Curve and H Emission2508.00124v1 · Richard O. Gray, Christopher. J. Corbally, Sean Curry et al.2025 · 0 citationsarXiv
Evolutionary Period Changes for 25 X-ray Binaries and the Measurement of an Empirical Universal Law for Angular Momentum Loss in Accreting Binaries2507.13515v1 · Bradley E. Schaefer2025 · 4 citationsApJ, 988, 35 (2025)
The Unique Helium Nova V445 Puppis Ejected $\gg_{\odot}$ in the Year 2000 and Will Not Become a Type Ia Supernova2412.17286v1 · Bradley E. Schaefer2024 · 0 citationsarXiv
Recurrent Nova V2487 Oph Had Superflares in 1941 and 1942 With Radiant Energies 10 Ergs2405.01210v1 · Bradley E. Schaefer2024 · 0 citationsarXiv
Evolutionary Period Changes For 52 Cataclysmic Variables, and the Failure For the Most Fundamental Prediction of the Magnetic Braking Model2404.12525v1 · Bradley E. Schaefer2024 · 17 citationsarXiv
Light Curves For Ten R Coronae Borealis Stars For Longer Than a Century: Secular Evolution, Dip Statistics, and a General Model for the Shape of Isolated Light Curve Dips2312.01843v1 · Bradley E. Schaefer2023 · 0 citationsarXiv
The recurrent nova T CrB had prior eruptions observed near December 1787 and October 1217 AD2308.13668v2 · Bradley E. Schaefer2023 · 29 citationsarXiv
Orbital Period Changes for Fourteen Novae and the Critical Failures of the Predictions of Standard Theories, the Hibernation Model, and the Magnetic Braking Model2307.13804v1 · Bradley E. Schaefer2023 · 12 citationsarXiv
The B & V Light Curves for Recurrent Nova T CrB From 1842--2022, the Unique Pre- and Post-Eruption High-States, the Complex Period Changes, and the Upcoming Eruption in 2025.5$\pm$1.32303.04933v1 · Bradley E. Schaefer2023 · 46 citationsarXiv
The Path from the Chinese and Japanese Observations of Supernova 1181 AD, to a Type Iax Supernova, to the Merger of CO and ONe White Dwarfs2301.04807v2 · Bradley E. Schaefer2023 · 17 citationsarXiv
Discovery of an Exceptional Optical Nebulosity in the Suspected Galactic SN Iax Remnant Pa 30 Linked to the Historical Guest Star of 1181 CE2301.04809v2 · Robert A. Fesen, Bradley E. Schaefer, Dana Patchick2023 · 19 citationsarXiv
The Nova KT Eri Is a Recurrent Nova With a Recurrence Time-Scale of 40-50 Years2210.10448v1 · Bradley E. Schaefer, Frederick M. Walter, Rebekah Hounsell et al.2022 · 20 citationsarXiv
Comprehensive Catalogue of the Overall Best Distances and Properties of 402 Galactic Novae2210.03181v1 · Bradley E. Schaefer (LSU)2022 · 67 citationsarXiv
Comprehensive Listing of 156 Reliable Orbital Periods for Novae, Including 49 New Periods2207.02932v1 · Bradley E. Schaefer2022 · 34 citationsarXiv
The Recurrent Nova U Scorpii from the 2010.1 to 2022.4 Eruptions; the Missed Eruption of 2016.78 +- 0.10 and the Critical Complex Period Changes2206.14231v1 · Bradley E. Schaefer2022 · 9 citationsarXiv
Discovery of Extreme, Roughly-Daily Superflares on the Recurrent Nova V2487 Oph2201.04080v1 · Bradley E. Schaefer, Ashley Pagnotta, Seth Zoppelt2022 · 15 citationsarXiv
Discovery of 13 New Orbital Periods for Classical Novae2106.13907v1 · Bradley E. Schaefer2021 · 13 citationsRes. Notes AAS, 5, 150 (2021)
A Case Study of the Picture Rocks Sun Dagger, Plus a Review of the Intentionality of Sun Daggers2012.10834v1 · Bradley E. Schaefer, James Stamm2020 · 2 citationsJournal of Astronomical History and Heritage, 23(3), 427-451 (2020)
Startlingly Fast Evolution of the Stingray Planetary Nebula and its Central Star, V839 Arae2012.04223v1 · Bradley E. Schaefer, Howard E. Bond, Kailash C. Sahu2020 · 1 citationarXiv
A blue ring nebula from a stellar merger several thousand years ago.33208957 · Hoadley, Keri, Martin, D Christopher, Metzger, Brian D et al.2021 · 18 citationsNature. 2020;587(7834):387-391
Sudden and Steady Orbital Period Changes Across the Classical Nova Eruptions of DQ Her and BT Mon1912.06169v1 · Bradley E. Schaefer2019 · 15 citationsarXiv
Sudden and Steady Orbital Period Changes Across Six Classical Nova Eruptions; The End of Hibernation and Two Serious Challenges for the Magnetic Braking Model of Cataclysmic Variable Evolution1912.06170v1 · Bradley E. Schaefer2019 · 24 citationsarXiv
Precise Measures of Orbital Period, Before and After Nova Eruption for QZ Aurigae1905.00974v1 · Bradley E. Schaefer, David Boyd, Geoffrey C. Clayton et al.2019 · 19 citationsarXiv
The Distances to Novae As Seen By Gaia1809.00180v1 · Bradley E. Schaefer2018 · 97 citationsarXiv
The KIC 8462852 Light Curve From 2015.75 to 2018.18 Shows a Variable Secular Decline1806.09911v1 · Bradley E. Schaefer, Rory O. Bentley, Tabetha S. Boyajian et al.2018 · 11 citationsarXiv
Yes, Aboriginal Australians Can and Did Discover the Variability of Betelgeuse1808.01862v1 · Bradley E. Schaefer2018 · 4 citationsJournal of Astronomical History and Heritage, 21(1), 7-12 (2018)
The First Post-Kepler Brightness Dips of KIC 84628521801.00732v1 · Tabetha S. Boyajian, Roi Alonso, Alex Ammerman et al.2018 · 56 citationsarXivon Valency
Astronomical and Historical Evaluation of Molnar's Solution for the Star of Bethlehem1612.07642v1 · Bradley E. Schaefer2016 · 0 citationsarXiv
Accurate Pre-Eruption and Post-Eruption Orbital Periods for the Dwarf/Classical Nova V1017 Sgr1612.00405v1 · Irene V. Salazar, Amy LeBleu, Bradley E. Schaefer et al.2016 · 26 citationsarXiv
All Known Hot RCB Stars Are Fading Fast Over the Last Century1605.02091v1 · Bradley E. Schaefer2016 · 15 citationsarXiv
Kepler K2 Observations of Sco X-1: Orbital Modulations and Correlations with Fermi GBM and MAXI1605.00546v1 · R. I. Hynes, B. E. Schaefer, Z. A. Baum et al.2016 · 12 citationsarXiv
KIC 8462852 Faded at an Average Rate of 0.165+-0.013 Magnitudes Per Century From 1890 To 19891601.03256v2 · Bradley E. Schaefer2016 · 54 citationsarXivon Valency
The 2010 Eruption of the Recurrent Nova U Scorpii: The Multi-Wavelength Light Curve1509.05431v1 · Ashley Pagnotta, Bradley E. Schaefer, James L. Clem et al.2015 · 20 citationsApJ, 2015, 811, 32
Photometry of the Stingray Nebula (V839 Ara) from 1889-2015 Across the Ionization of Its Planetary Nebula1509.01202v1 · Bradley E. Schaefer, Zachary I. Edwards2015 · 12 citationsarXiv
Newly Determined Explosion Center of Tycho's Supernova and the Implications for Proposed Ex-Companion Stars of the Progenitor1507.06347v1 · Zhichao Xue, Bradley E. Schaefer2015 · 26 citationsarXiv
HST Images Flash Ionization of Old Ejecta by the 2011 Eruption of Recurrent Nova T Pyxidis1503.08840v1 · Michael M. Shara, David Zurek, Bradley E. Schaefer et al.2015 · 17 citationsarXiv
Investigation of the Progenitors of the Type Ia Supernovae Associated With the LMC Supernova Remnants 0505-67.9 and 0509-68.71501.00517v1 · Ashley Pagnotta, Bradley E. Schaefer2015 · 18 citationsarXiv
The Optical Luminosity Function of Gamma-ray Bursts deduced from ROTSE-III Observations1409.4189v1 · X. H. Cui, X. F. Wu, J. J. Wei et al.2014 · 3 citationsarXiv
The Diffuse Source at the Center of LMC SNR 0509-67.5 is a Background Galaxy at z = 0.0311405.0243v1 · Ashley Pagnotta, Emma S. Walker, Bradley E. Schaefer2014 · 11 citationsarXiv
Identifying and Quantifying Recurrent Novae Masquerading as Classical Novae1405.0246v1 · Ashley Pagnotta, Bradley E. Schaefer2014 · 74 citationsarXiv
The Star of Bethlehem is Not the Nova DO Aquilae (Nor Any Other Nova, Supernova, or Comet)1311.7457v1 · Bradley E. Schaefer2013 · 0 citationsarXiv
Nova Aquilae 1918 (V603 Aql) Faded by 0.44 mag/century from 1938-20131310.6802v2 · Christopher B. Johnson (LSU), Bradley E. Schaefer (LSU), Peter Kroll et al.2013 · 18 citationsarXiv
Symbiotic Stars in OGLE Data I. Large Magellanic Cloud Systems1309.7345v1 · R. Angeloni, C. E. Ferreira Lopes, N. Masetti et al.2013 · 16 citationsarXiv
Career total: 706 works. 148 are in this corpus.Showing the 50 most recent.
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