output
19922026
most citedObservation of a new particle in the search for the Standard Model Higgs boson with the ATLAS detector at the LHC

10.9k citations

Showing astro-ph.HEShow all

474 papers · 1 filter

astro-ph.HE2026

A high-resolution study of the double radio relic system in MACS J1752.0+4440

M. Della Chiesa, A. Botteon, A. Bonafede +6

Radio relics are diffuse, extended synchrotron sources located at the outskirts of merging galaxy clusters. Their origin has been linked with shock waves injected into the intraclu…

astro-ph.HE2026★ 2 cited

A XRISM view of the iron line complex in NGC 1068: Rethinking the prototypical Compton-thick AGN

S. Bianchi, B. Vander Meulen, E. Bertola +32

We analyze a XRISM/Resolve observation of NGC1068, focusing on the Fe K and Fe K fluorescent lines and on the Fe XXV and Fe XXVI emission complexes. Line centroid energies, i…

astro-ph.HE2026★ 1 cited

Source identification for the Swift-BAT 150-month hard X-ray catalog using soft X-ray observations

K. Imam, N. Torres-Alba, S. Marchesi +10

We present a comprehensive catalog of 251 potential counterparts for 250 unassociated hard X-ray sources detected in the Swift Burst Alert Telescope (BAT) 150-month hard X-ray surv…

astro-ph.HE2026

AGN in Gaia Alerts: from flares to Changing Look Quasars

M. Dennefeld, T. Pursimo, C. Carvalho +11

The Gaia Alerts system is providing alerts on a variety of objects displaying a significant photometric change detected by the Gaia satellite from one passage to the next one over…

astro-ph.HE2025★ 1 cited

Kilonova and progenitor properties of merger-driven gamma-ray bursts

P. Singh, G. Stratta, A. Rossi +6

Gamma-Ray Burst (GRB) prompt and afterglow emission, as well as a kilonova (KN), are the expected electromagnetic (EM) counterparts of Binary Neutron Star (BNS) and Neutron Star --…

astro-ph.HE2025

Magnetic field spreading from stellar and galactic dynamos into the exterior

Axel Brandenburg, Oindrila Ghosh, Franco Vazza +1

The exteriors of stellar and galactic dynamos are usually modeled as current-free potential fields. A more realistic description might instead be that of a force-free magnetic fiel…

astro-ph.HE2025

Simulations of high-energy neutrino emissions from blazars with the LeHa-Paris code

Francesco Carenini, Matteo Cerruti

The identification of astrophysical sources responsible for high-energy cosmic neutrinos has long been a challenge. A significant milestone was achieved with the blazar TXS 0506+05…

astro-ph.HE2025★ 1 cited

The Faintest, Extremely Variable X-ray Tidal Disruption Event from a Supermassive Black Hole Binary?

Mengqiu Huang, Yongquan Xue, Shuo Li +30

Tidal disruption events (TDEs), which occur when stars enter the tidal radii of supermassive black holes (SMBHs) and are subsequently torn apart by their tidal forces, represent in…

astro-ph.HE2025

Optimizing the potential of KM3NeT in detecting core-collapse supernovae

KM3NeT Collaboration, O. Adriani, A. Albert +285

Core-collapse supernovae mark the end of life of massive stars. However, despite their importance in astrophysics, their underlying mechanisms remain unclear. Neutrinos that emerge…

astro-ph.HE2025★ 12 cited

Counterpart identification and classification for eRASS1 and characterisation of the AGN content

M. Salvato, J. Wolf, T. Dwelly +44

[abridged] Accurately accounting for the AGN phase in galaxy evolution requires a large, clean AGN sample. This is now possible with SRG/eROSITA. The public Data Release 1 (DR1, Ja…

astro-ph.HE2025★ 2 cited

VHE -ray observations of bright BL Lacs with the Large-Sized Telescope prototype (LST-1) of the CTAO

The CTAO-LST Project, :, K. Abe +331

Cherenkov Telescope Array Observatory (CTAO) is the next-generation ground-based gamma-ray observatory operating in the energy range from 20 GeV up to 300 TeV, with two sites in La…

astro-ph.HE2025

SAG-SCI: the Real-time, High-level Analysis Software for Array Control and Data Acquisition of the Cherenkov Telescope Array Observatory

Gabriele Panebianco, Nicolò Parmiggiani, Andrea Bulgarelli +11

The Cherenkov Telescope Array Observatory (CTAO) is going to be the leading observatory for very-high-energy gamma-rays over the next decades. Its unique sensitivity, wide field of…

astro-ph.HE2025★ 1 cited

Twenty years of blazar monitoring with the INAF radio telescopes

N. Marchili, S. Righini, M. Giroletti +14

The extreme variability of blazars, in both timescale and amplitude, is generally explained as the effect of a relativistic jet closely aligned to the observer's line-of-sight. Due…

astro-ph.HE2025

Constraining gamma-ray burst parameters with the first ultra-high energy neutrino event KM3-230213A

KM3NeT Collaboration, O. Adriani, A. Albert +278

Context: The detection of the highest energy neutrino observed to date by KM3NeT, with an estimated energy of 220 PeV, opens up new possibilities for the study and identification o…

astro-ph.HE2025

Constraining the TeV gamma-ray emission of SN 2024bch, a possible type IIn-L from a red supergiant progenitor. Multiwavelength observations and analysis of the progenitor

The CTAO-LST Project, :, K. Abe +332

We present very high-energy optical photometry and spectroscopic observations of SN 2024bch in the nearby galaxy NGC 3206 (\sim 20 Mpc). We used gamma-ray observations performed wi…

astro-ph.HE2025

A multi-wavelength view of the multi-messenger sources NGC 1068 and PKS 1502+1061

Abhishek Desai, Stefano Marchesi, Justin Vandenbroucke +8

Multi-messenger astronomy offers a powerful approach to studying high-energy radiative processes in astrophysical sources. A notable example was seen in 2017, when the IceCube Neut…

astro-ph.HE2025★ 2 cited

The Northern Cross Fast Radio Burst project: V. Search for transient radio emission from Galactic magnetars

A. Geminardi, P. Esposito, G. Bernardi +21

Context. The radio emission from magnetars is poorly understood and poorly characterized observationally, in particular for what concerns single pulses and sporadic events. The int…

astro-ph.HE2025★ 1 cited

Detection of the Geminga pulsar at energies down to 20 GeV with the LST-1 of CTAO

The CTAO-LST Project, :, K. Abe +331

Geminga is the third gamma-ray pulsar firmly detected by imaging atmospheric Cherenkov telescopes (IACTs) after the Crab and the Vela pulsars. Most of its emission is expected at t…

astro-ph.HE2025★ 1 cited

Discovery of large-scale radio emission enveloping the mini-halo in the most X-ray luminous galaxy cluster RX~J1347.5-1145

D. N. Hoang, M. Brüggen, A. Bonafede +8

Diffuse radio sources, known as mini-halos and halos, are detected at the centres of galaxy clusters. These centralized diffuse sources are typically observed individually, with bo…

astro-ph.HE2025★ 13 cited

The evolution of cosmic ray electrons in the cosmic web: seeding by AGN, star formation and shocks

F. Vazza, C. Gheller, F Zanetti +4

Several processes in the Universe convert a fraction of gas kinetic energy into the acceleration of relativistic electrons, making them observable at radio wavelengths, or contribu…

astro-ph.HE2024★ 4 cited

Did IceCube discover Dark Matter around Blazars?

Andrea Giovanni De Marchi, Alessandro Granelli, Jacopo Nava +1

Models of blazar jets, that explain observations of their photon spectra, typically predict too few neutrinos to be possibly seen by existing telescopes. In particular, they fall s…

astro-ph.HE2024★ 4 cited

Cocoon shock, X-ray cavities and extended Inverse Compton emission in Hercules A: clues from Chandra observations

F. Ubertosi, Y. Gong, P. Nulsen +7

We present a detailed analysis of jet activity in the radio galaxy 3C348 at the center of the galaxy cluster Hercules A. We use archival Chandra data to investigate the jet-driven…

astro-ph.HE2024

Intergalactic magnetism in a gamma-ray beam as a model of Porphyrion

A. Neronov, F. Vazza, A. Brandenburg +1

We estimate the magnetic field in the jets of the recently discovered 7 Mpc long Porphyrion system. We use non-detection of the system in gamma-rays to derive a lower bound on the…

astro-ph.HE2024★ 5 cited

A new look at the extragalactic Very High Energy sky: searching for TeV-emitting candidates among the X-ray bright, non-Fermi detected blazar population

Stefano Marchesi, Antonio Iuliano, Elisa Prandini +8

We present the results of a multi-wavelength study of blazars selected from the 5th ROMABZCAT catalog. We selected from this sample a subsample of 2435 objects having at least one…