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The Diffuse Supernova Neutrino Background is detectable in Super-Kamiokande
Shunsaku Horiuchi, John F. Beacom, Eli Dwek
The Diffuse Supernova Neutrino Background (DSNB) provides an immediate opportunity to study the emission of MeV thermal neutrinos from core-collapse supernovae. The DSNB is a power…
Core-Collapse Astrophysics with a Five-Megaton Neutrino Detector
Matthew D. Kistler, Hasan Yuksel, Shin'ichiro Ando +2
The legacy of solar neutrinos suggests that large neutrino detectors should be sited underground. However, to instead go underwater bypasses the need to move mountains, allowing mu…
A New Class of Luminous Transients and A First Census of Their Massive Stellar Progenitors
Todd A. Thompson, Jose L. Prieto, K. Z. Stanek +3
The progenitors of SN 2008S and the 2008 transient in NGC300 were dust-enshrouded, with extremely red mid-infrared (MIR) colors and relatively low luminosities. The transients were…
Revealing the High-Redshift Star Formation Rate with Gamma-Ray Bursts
Hasan Yuksel, Matthew D. Kistler, John F. Beacom +1
While the high-z frontier of star formation rate (SFR) studies has advanced rapidly, direct measurements beyond z ~ 4 remain difficult, as shown by significant disagreements among…
Discovery of the Dust-Enshrouded Progenitor of SN 2008S with Spitzer
J. L. Prieto, M. D. Kistler, T. A. Thompson +7
We report the discovery of the progenitor of the recent type IIn SN 2008S in the nearby galaxy NGC 6946. Surprisingly, it was not found in deep, pre-explosion optical images of its…
Conservative Constraints on Dark Matter Annihilation into Gamma Rays
Gregory D. Mack, Thomas D. Jacques, John F. Beacom +2
Using gamma-ray data from observations of the Milky Way, Andromeda (M31), and the cosmic background, we calculate conservative upper limits on the dark matter self-annihilation cro…
A Survey About Nothing: Monitoring a Million Supergiants for Failed Supernovae
C. S. Kochanek, J. F. Beacom, M. D. Kistler +4
Extragalactic transient searches have historically been limited to looking for the appearance of new sources such as supernovae. It is now possible to carry out a new kind of surve…
An Unexpectedly Swift Rise in the Gamma-ray Burst Rate
Matthew D. Kistler, Hasan Yuksel, John F. Beacom +1
The association of long gamma-ray bursts with supernovae naturally suggests that the cosmic GRB rate should trace the star formation history. Finding otherwise would provide import…
Characterizing Supernova Progenitors via the Metallicities of their Host Galaxies, from Poor Dwarfs to Rich Spirals
Jose L. Prieto, Krzysztof Z. Stanek, John F. Beacom
We investigate how the different types of supernovae are relatively affected by the metallicity of their host galaxy. We match the SAI Supernova Catalog to the SDSS-DR4 catalog of…
Neutrino Constraints on the Dark Matter Total Annihilation Cross Section
Hasan Yuksel, Shunsaku Horiuchi, John F. Beacom +1
In the indirect detection of dark matter through its annihilation products, the signals depend on the square of the dark matter density, making precise knowledge of the distributio…
TASI Lectures on Astrophysical Aspects of Neutrinos
John F. Beacom
Neutrino astronomy is on the verge of discovering new sources, and this will lead to important advances in astrophysics, cosmology, particle physics, and nuclear physics. This pape…
TeV gamma-rays from photo-disintegration/de-excitation of nuclei in Westerlund 2
Luis A. Anchordoqui, John F. Beacom, Yousaf M. Butt +4
TeV gamma-rays can result from the photo-de-excitation of PeV cosmic ray nuclei after their parents have undergone photo-disintegration in an environment of ultraviolet photons. Th…
Strong Upper Limits on Sterile Neutrino Warm Dark Matter
Hasan Yuksel, John F. Beacom, Casey R. Watson
Sterile neutrinos are attractive dark matter candidates. Their parameter space of mass and mixing angle has not yet been fully tested despite intensive efforts that exploit their g…
Towards Closing the Window on Strongly Interacting Dark Matter: Far-Reaching Constraints from Earth's Heat Flow
Gregory D. Mack, John F. Beacom, Gianfranco Bertone
We point out a new and largely model-independent constraint on the dark matter scattering cross section with nucleons, applying when this quantity is larger than for typical weakly…
Neutrino Spectrum from SN 1987A and from Cosmic Supernovae
Hasan Yuksel, John F. Beacom
The detection of neutrinos from SN 1987A by the Kamiokande-II and Irvine-Michigan-Brookhaven detectors provided the first glimpse of core collapse in a supernova, complementing the…
Dissecting the Cygnus Region with TeV Gamma Rays and Neutrinos
John F. Beacom, Matthew D. Kistler
Recent Milagro observations of the Cygnus region have revealed both diffuse TeV gamma-ray emission and a bright and extended TeV source, MGRO J2019+37, which seems to lack an obvio…
TeV gamma-rays and neutrinos from photo-disintegration of nuclei in Cygnus OB2
Luis A. Anchordoqui, John F. Beacom, Haim Goldberg +2
TeV gamma-rays may provide significant information about high energy astrophysical accelerators. Such gamma-rays can result from the photo-de-excitation of PeV nuclei after their p…
TeV gamma-rays from photo-disintegration/de-excitation of cosmic-ray nuclei
Luis A. Anchordoqui, John F. Beacom, Haim Goldberg +2
It is commonly assumed that high-energy gamma-rays are made via either purely electromagnetic processes or the hadronic process of pion production, followed by decay. We investigat…
Cosmic Neutrino Bound on the Dark Matter Annihilation Rate in the Late Universe
John F. Beacom
How large can the dark matter self-annihilation rate in the late universe be? This rate depends on (rho_DM/m_chi)^2 <sigma_A v>, where rho_DM/m_chi is the number density of dark ma…
The Advanced Compton Telescope Mission
Steven E. Boggs, James Kurfess, James Ryan +30
The Advanced Compton Telescope (ACT), the next major step in gamma-ray astronomy, will probe the fires where chemical elements are formed by enabling high-resolution spectroscopy o…
Upper Bound on the Dark Matter Total Annihilation Cross Section
John F. Beacom, Nicole F. Bell, Gregory D. Mack
We consider dark matter annihilation into Standard Model particles and show that the least detectable final states, namely neutrinos, define an upper bound on the total cross secti…
Guaranteed and Prospective Galactic TeV Neutrino Sources
Matthew D. Kistler, John F. Beacom
Recent observations, particularly from the HESS Collaboration, have revealed rich Galactic populations of TeV gamma-ray sources, including a collection unseen in other wavelengths.…
Direct X-ray Constraints on Sterile Neutrino Warm Dark Matter
Casey R. Watson, John F. Beacom, Hasan Yuksel +1
Warm dark matter (WDM) might more easily account for small scale clustering measurements than the heavier particles typically invoked in Lambda cold dark matter (LCDM) cosmologies.…
Protecting Life in the Milky Way: Metals Keep the GRBs Away
K. Z. Stanek, O. Y. Gnedin, J. F. Beacom +7
The host galaxies of the five local, z<0.25, long-duration gamma-ray bursts, each of which had a well-documented associated supernova, are all faint and metal-poor compared to the…