activity
19952026
most citedDiscovery of a Supernova Explosion at Half the Age of the Universe and its Cosmological Implications

2.5k citations · 31k across the 290 of their papers we have counts for

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Showing astro-ph.HEShow all

15 papers · 1 filter

astro-ph.HE2026

Euclid: Quick Data Release (Q1) -- Optical hotspots in powerful radio galaxies

M. J. Hardcastle, L. Bisigello, M. Bondi +154

The hotspots of powerful radio galaxies are the sites of high-energy particle acceleration, but radio observations give us limited information on the electron energy distributions…

astro-ph.HE2025

Euclid Quick Data Release (Q1). The active galaxies of Euclid

Euclid Collaboration, T. Matamoro Zatarain, S. Fotopoulou +355

We present a catalogue of candidate active galactic nuclei (AGN) in the Quick Release (Q1) fields. For each source we collect multi-wavelength photometry and spec…

astro-ph.HE2025★ 14 cited

TiDES: The 4MOST Time Domain Extragalactic Survey

C. Frohmaier, M. Vincenzi, M. Sullivan +24

The Time Domain Extragalactic Survey (TiDES) conducted on the 4-metre Multi-Object Spectroscopic Telescope (4MOST) will perform spectroscopic follow-up of extragalactic transients…

astro-ph.HE2024

Recovering Pulsar Braking Index from a Population of Millisecond Pulsars

A. L. Hewitt, M. Pitkin, I. M. Hook

The braking index, , of a pulsar is a measure of its angular momentum loss and the value it takes corresponds to different spin-down mechanisms. For a pulsar spinning down due t…

astro-ph.HE2024

A Young Supernova Selection Pipeline For The LSST Era

Harry Addison, Chris Frohmaier, Kate Maguire +3

Early-time spectroscopy of supernovae (SNe), acquired within days of explosion, yields crucial insights into their outermost ejecta layers, facilitating the study of their environm…

astro-ph.HE2024

Tracing back the birth environments of Type Ia supernova progenitor stars: A pilot study based on 44 early-type host galaxies

Young-Lo Kim, Lluís Galbany, Isobel Hook +1

The environmental dependence of Type Ia supernova (SN Ia) luminosities is well-established, and efforts are being made to find its origin. Previous studies typically use the curren…