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Possible Detection of the Stellar Donor or Remnant for the Type Iax Supernova 2008ha
Ryan J. Foley, Curtis McCully, Saurabh W. Jha +5
Type Iax supernovae (SNe Iax) are thermonuclear explosions that are related to SNe Ia, but are physically distinct. The most important differences are that SNe Iax have significant…
A luminous, blue progenitor system for a type-Iax supernova
Curtis McCully, Saurabh W. Jha, Ryan J. Foley +6
Type-Iax supernovae (SN Iax) are stellar explosions that are spectroscopically similar to some type-Ia supernovae (SN Ia) at maximum light, except with lower ejecta velocities. The…
Identification of the Optical Counterpart of Fermi Black Widow Millisecond Pulsar PSR J1544+4937
Sumin Tang, David L. Kaplan, Sterl Phinney +10
We report the optical identification of the companion to the {\it Fermi} black widow millisecond pulsar PSR J1544+4937. We find a highly variable source on Keck LRIS images at the…
X-ray diagnostics of chemical composition of the accretion disk and donor star in UCXBs II: XMM-Newton observations
Filippos Koliopanos, Marat Gilfanov, Lars Bildsten +1
We search for the Fe K line in spectra of Ultra Compact X-ray Binaries (UCXBs). For this purpose we have analyzed XMM-Newton observations of five confirmed UCXBs. We find that t…
Angular momentum transport within evolved low-mass stars
Matteo Cantiello, Christopher Mankovich, Lars Bildsten +2
Asteroseismology of 1.0-2.0 Msun red giants by the Kepler satellite has enabled the first definitive measurements of interior rotation in both first ascent red giant branch (RGB) s…