5 papers
Presaging Doppler beaming discoveries of double white dwarfs during the Rubin LSST era
Gautham Adamane Pallathadka, Yossef Zenati, Nadia L. Zakamska +2
Double white dwarfs (DWDs) are by far the most common compact binaries in the Milky Way, are important low-frequency gravitational-wave sources, and in some cases merge to become T…
Thermal Damping of Mass-Modulating Scalars
Abhishek Banerjee, Ngan H. Nguyen, Erwin H. Tanin
The cosmological evolution of a scalar field is shaped by Hubble damping. Any non-gravitational couplings of the scalar with the primordial thermal bath generically contribute addi…
Thermal Damping of Neutrino-Coupled Scalar Dark Matter
Abhishek Banerjee, Ngan H. Nguyen, Erwin H. Tanin
We point out that ultralight scalar dark matter that modulates neutrino masses can be significantly thermal damped by cosmic neutrinos in the early universe. This dissipative effec…
Indirect Searches for Ultraheavy Dark Matter in the Time Domain
David E. Kaplan, Xuheng Luo, Ngan H. Nguyen +2
Dark matter may exist today in the form of ultraheavy composite bound states. Collisions between such dark matter states can release intense bursts of radiation that includes gamma…
Spectra of axions emitted from main sequence stars
Ngan H. Nguyen, Erwin H. Tanin, Marc Kamionkowski
We compute the detailed energy spectra of axions with two-photon coupling produced in stellar cores over a wide range of stellar masses. We focus on main sequence stars and base ou…