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Several tens of hyper-velocity stars (HVSs) have been discovered escaping our Galaxy. These stars share a common origin in the Galactic centre and are distributed anisotropically in Galactic longitude and latitude. We examine the…

Astrophysics of Galaxies · Physics 2015-06-16 Kastytis Zubovas , Graham A. Wynn , Alessia Gualandris

Diffuse $\gamma$-ray emission produced by the interaction of cosmic-ray particles with matter and radiation in the Galaxy can be used to probe the distribution of cosmic rays and their sources in different regions of the Galaxy. With its…

Particles weakly interacting with ordinary matter, with an associated mass of the order of an atomic nucleus (WIMPs), are plausible candidates for Dark Matter. The direct detection of an elastic collision of a target nuclei induced by one…

Instrumentation and Methods for Astrophysics · Physics 2016-08-01 C. Couturier , O. Guillaudin , F. Naraghi , Q. Riffard , D. Santos , N. Sauzet , P. Colas , E. Ferrer Ribas , I. Giomataris , J. Busto , D. Fouchez , C. Tao , N. Zhou

Particles with TeV mass and strong self-interactions generically have the right annihilation cross section to explain an observed excess of cosmic electrons and positrons if the end-product of the annihilation is charged leptons. We present…

High Energy Physics - Phenomenology · Physics 2010-08-12 Yi Cai , David E. Kaplan , Markus A. Luty

The gravitational core collapse of a star produces a huge burst of neutrinos of all flavors. A number of detectors worldwide are sensitive to such a burst; its detection would yield information about both particle physics and astrophysics.…

Astrophysics · Physics 2007-05-23 K. Scholberg

We address the question of whether the upcoming generation of dark matter search experiments and colliders will be able to discover if the dark matter in the Universe has two components of weakly interacting massive particles (WIMPs). We…

High Energy Physics - Phenomenology · Physics 2009-12-23 Stefano Profumo , Kris Sigurdson , Lorenzo Ubaldi

We propose a new alternative to the Weakly Interacting Massive Particle (WIMP) paradigm for dark matter. Rather than being determined by thermal freeze-out, the dark matter abundance in this scenario is set by dark matter decay, which is…

High Energy Physics - Phenomenology · Physics 2017-08-16 Michael J. Baker , Joachim Kopp

More than a decade ago, the IceCube Neutrino Observatory discovered a diffuse flux of 10 TeV-10 PeV neutrinos from our Universe. This flux of unknown origin most likely emanates from an extragalactic population of neutrino sources, which…

High Energy Astrophysical Phenomena · Physics 2025-06-03 Kathrine Mørch Groth , Markus Ahlers

Using the latest generation of adaptive optics imaging systems together with laser guide stars on 8m-class telescopes, we are finally revealing the previously-hidden population of supernovae in starburst galaxies. Finding these supernovae…

Solar and Stellar Astrophysics · Physics 2015-06-22 Stuart D. Ryder , Seppo Mattila , Erkki Kankare , Petri Vaisanen

Neutrinos are the second most abundant particles in the universe according to the Standard Model, yet they are the least likely to interact. This feature implies that detecting a neutrino can reveal valuable insights into its source. Among…

High Energy Astrophysical Phenomena · Physics 2025-10-27 Anna M. Suliga

Next-generation dark matter (DM) detectors searching for weakly interacting massive particles (WIMPs) will be sensitive to coherent scattering from solar neutrinos, demanding an efficient background-signal discrimination tool. Directional…

Coulomb-like interactions typically has a cross section scales with velocity dependence as $\sigma=\sigma_0 v^{-4}$. The momentum transfer rate between a slightly charged dark matter and ionized particles increases significantly at low…

Cosmology and Nongalactic Astrophysics · Physics 2023-11-21 Yugen Lin , Yu Gao

Imaging the bright maser emission produced by several molecular species at centimeter wavelengths is an essential tool for understanding the process of massive star formation because it provides a way to probe the kinematics of dense…

The core collapse of a massive star in the Milky Way will produce a neutrino burst, intense enough to be detected by existing underground detectors. The AMANDA neutrino telescope located deep in the South Pole ice can detect MeV neutrinos…

Astrophysics · Physics 2012-08-27 AMANDA collaboration

Impulsive supernova feedback and non-standard dark matter models, such as self-interacting dark matter (SIDM), are the two main contenders for the role of the dominant core formation mechanism at the dwarf galaxy scale. Here we show that…

Astrophysics of Galaxies · Physics 2022-11-09 Jan D. Burger , Jesús Zavala , Laura V. Sales , Mark Vogelsberger , Federico Marinacci , Paul Torrey

Fully understanding the average core-collapse supernova requires detecting the diffuse supernova neutrino background (DSNB) in all flavors. While the DSNB $\bar{\nu}_e$ flux is near detection, and the DSNB $\nu_e$ flux has a good upper…

High Energy Astrophysical Phenomena · Physics 2022-02-16 Anna M. Suliga , John F. Beacom , Irene Tamborra

In this paper, we present high-energy neutrino spectra from 21 Galactic supernova remnants (SNRs), derived from gamma-ray measurements in the GeV-TeV range. We find that only the strongest sources, i.e. G40.5-0.5 in the north and Vela…

Astrophysics of Galaxies · Physics 2015-06-12 Matthias Mandelartz , Julia Becker Tjus

I first outline new results on the angular modulation of WIMP dark matter scattering on targets in terrestrial laboratories, based on our uncertainties of the WIMP halo distribution, I then outline an exciting new result which indicates…

Astrophysics · Physics 2009-10-30 Lawrence M. Krauss

An observation of the anisotropy of dark matter interactions in a direction-sensitive detector would provide decisive evidence for the discovery of galactic dark matter. Directional information would also provide a crucial input to…

High Energy Physics - Phenomenology · Physics 2015-11-20 Gopolang Mohlabeng , Kyoungchul Kong , Jin Li , Adam Para , Jonghee Yoo