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19912026
Showing 2024 · astro-ph.HEShow all

15 papers · 2 filters

astro-ph.HE2024★ 1 cited

The Maximal Gravitational Wave Signal from Asteroid-Mass Primordial Black Hole Mergers At Resonant Microwave Cavities

Stefano Profumo, Lucas Brown, Christopher Ewasiuk +2

Primordial black holes can be the entirety of the dark matter in a broad, approximately five-orders-of-magnitude-wide mass range, the ``asteroid mass range'', between $10^{-16}\ M_…

astro-ph.HE2024★ 1 cited

Detecting prompt and afterglow jet emission of gravitational wave events from LIGO/Virgo/KAGRA and next generation detectors

Ravjit Kaur, Brendan O'Connor, Antonella Palmese +1

Following the wealth of new results enabled by multimessenger observations of the binary neutron star (BNS) merger GW170817, the next goal is increasing the number of detections of…

astro-ph.HE2024★ 17 cited

A cosmic formation site of silicon and sulphur revealed by a new type of supernova explosion

Steve Schulze, Avishay Gal-Yam, Luc Dessart +47

The cores of stars are the cosmic furnaces where light elements are fused into heavier nuclei. The fusion of hydrogen to helium initially powers all stars. The ashes of the fusion…

astro-ph.HE2024★ 11 cited

Contemporaneous X-ray Observations of 30 Bright Radio Bursts from the Prolific Fast Radio Burst Source FRB 20220912A

Amanda M. Cook, Paul Scholz, Aaron B. Pearlman +22

We present an extensive contemporaneous X-ray and radio campaign performed on the repeating fast radio burst (FRB) source FRB 20220912A for eight weeks immediately following the so…

astro-ph.HE2024★ 9 cited

The impact of the FREDDA dedispersion algorithm on estimations with FRBs

Jordan Hoffmann, Clancy W. James, Hao Qiu +12

Fast radio bursts (FRBs) are transient radio signals of extragalactic origins that are subjected to propagation effects such as dispersion and scattering. It follows then that thes…

astro-ph.HE2024★ 40 cited

The Commensal Real-time ASKAP Fast Transient incoherent-sum survey

R. M. Shannon, K. W. Bannister, A. Bera +24

With wide-field phased array feed technology,the Australian Square Kilometre Array Pathfinder (ASKAP) is ideally suited to search for seemingly rare radio transient sources that ar…

astro-ph.HE2024★ 19 cited

CHIME/FRB/Pulsar discovery of a nearby long period radio transient with a timing glitch

Fengqiu Adam Dong, Tracy E Clarke, Alice Curtin +22

We present the discovery of a 421 s long period radio transient (LPT) using the CHIME telescope, CHIME J0630+25. The source is localized to RA=06:30:38.4 Dec=25:26:24…

astro-ph.HE2024

On the Impact of Dark Matter Scattering on the Trajectory of High-Energy Cosmic Rays

Stefano Profumo, M. Grant Roberts, Shashank Dharanibalan

We study the impact on the trajectory of high-energy cosmic-ray protons of scattering off the cosmic dark matter. We compute the scattering angle as a function of the cosmic-ray en…

astro-ph.HE2024★ 1 cited

X-ray observations of the Zwicky 3146 galaxy cluster reveal a 3.5 keV excess

Sunayana Bhargava, Paul Giles, Kathy Romer +3

In this note, we present spectral fits of the well-documented sloshing cool-core cluster Zwicky 3146 (), to test the existence of the highly speculated 3.5 keV line. We re…

astro-ph.HE2024★ 7 cited

Galactic transient sources with the Cherenkov Telescope Array Observatory

Cherenkov Telescope Array Observatory Consortium

A wide variety of Galactic sources show transient emission at soft and hard X-ray energies: low- and high-mass X-ray binaries containing compact objects, isolated neutron stars exh…

astro-ph.HE2024★ 34 cited

Broadband Multi-wavelength Properties of M87 during the 2018 EHT Campaign including a Very High Energy Flaring Episode

J. C. Algaba, M. Balokovic, S. Chandra +738

The nearby elliptical galaxy M87 contains one of the only two supermassive black holes whose emission surrounding the event horizon has been imaged by the Event Horizon Telescope (…

astro-ph.HE2024★ 9 cited

Constraining Near-Simultaneous Radio Emission from Short Gamma-ray Bursts using CHIME/FRB

Alice P. Curtin, Sloane Sirota, Victoria M. Kaspi +12

We use the Canadian Hydrogen Intensity Mapping Experiment (CHIME) Fast Radio Burst (FRB) Project to search for FRBs that are temporally and spatially coincident with gamma-ray burs…

astro-ph.HE2024★ 24 cited

Gamma-ray Bursts as Distance Indicators by a Statistical Learning Approach

Maria Giovanna Dainotti, Aditya Narendra, Agnieszka Pollo +6

Gamma-ray bursts (GRBs) can be probes of the early universe, but currently, only 26% of GRBs observed by the Neil Gehrels Swift Observatory GRBs have known redshifts () due to o…

astro-ph.HE2024★ 4 cited

Evaluation of the performance of a CdZnTe-based soft -ray detector for CubeSat payloads

Kees de Kuijper, Rishank Diwan, Partha Sarathi Pal +4

The low-energy -ray (0.1-30 MeV) sky has been relatively unexplored since the decommissioning of the COMPTEL instrument on the Compton Gamma-Ray Observatory (CGRO) satellite in…

astro-ph.HE2024★ 14 cited

Discovery and Follow-up of ASASSN-23bd (AT 2023clx): The Lowest Redshift and Least Luminous Tidal Disruption Event To Date

W. B. Hoogendam, J. T. Hinkle, B. J. Shappee +23

We report the All-Sky Automated Survey for SuperNovae discovery of the tidal disruption event (TDE) ASASSN-23bd (AT 2023clx) in NGC 3799, a LINER galaxy with no evidence of strong…