☆ 4.6 Article

Modeling of GeV-TeV gamma-ray emission of Cygnus Cocoon

ADVANCES IN SPACE RESEARCH (2022)

Related references

Note: Only part of the references are listed.

Article Astronomy & Astrophysics

Discovery of the Ultrahigh-energy Gamma-Ray Source LHAASO J2108+5157

Zhen Cao et al.

Summary: The discovery of an ultrahigh-energy gamma-ray source, LHAASO J2108+5157, was reported by analyzing data from LHAASO-KM2A. Significant excess of gamma-ray induced showers was observed, with a harder spectrum demanded at lower energies. The position of the gamma-ray emission is correlated with a giant molecular cloud, supporting a hadronic origin.

ASTROPHYSICAL JOURNAL LETTERS (2021)

Add to Collection

Article Astronomy & Astrophysics

PeV Photon and Neutrino Flares from Galactic Gamma-Ray Binaries

A. M. Bykov et al.

Summary: The study reveals that in close binary systems, PeV protons can be efficiently accelerated when the compact relativistic companion collides with stellar winds, leading to the production of hard sub-PeV photons and neutrinos. This finding suggests that gamma-ray binaries may significantly contribute to the Galactic component of the detected high-energy neutrino flux.

ASTROPHYSICAL JOURNAL LETTERS (2021)

Add to Collection

Article Astronomy & Astrophysics

The origin of Galactic cosmic rays as revealed by their composition

Vincent Tatischeff et al.

Summary: This study delves into the composition of Galactic cosmic rays (GCRs) using recent measurements from various experiments, revealing that the volatile elements of CR material are accelerated from a hot plasma typical of Galactic superbubbles. It also suggests that the overabundance of certain elements in GCRs may originate from specific sources, such as Ne-22 from wind termination shocks. The study estimates ion acceleration efficiency in supernova shocks and wind termination shocks to be around 10^(-5), and highlights the preferential acceleration of refractory elements contained in interstellar dust in the GCR source composition.

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY (2021)

Add to Collection

Article Astronomy & Astrophysics

HAWC observations of the acceleration of very-high-energy cosmic rays in the Cygnus Cocoon

A. U. Abeysekara et al.

Summary: Observations of 1-100 TeV gamma rays from the 'Cygnus Cocoon' have been reported, likely produced by 10-1,000 TeV freshly accelerated cosmic rays originating from the enclosed star-forming region Cyg OB2. The study reveals the ability of such regions to accelerate particles to high energies, providing insights into cosmic particle transport and historical activity within the superbubble.

NATURE ASTRONOMY (2021)

Add to Collection

Article Astronomy & Astrophysics

Particle acceleration in winds of star clusters

G. Morlino et al.

Summary: The origins of cosmic rays in our Galaxy remain a subject of ongoing debate, with supernova remnant shocks considered as possible sites of acceleration. However, it is widely accepted that reaching PeV energies from such sources is challenging. Accelerated particles escaping remnants have complex spectra not matching with those observed at Earth. Diffusive shock acceleration at the termination shock of star clusters is investigated, where maximum energy may reach the PeV region for powerful clusters. Energy dissipation in the wind to magnetic perturbations plays a crucial role in shaping the spectrum of accelerated particles. The possibility of a power-law spectrum with a slope of 4/4.3 is found, in agreement with standard models of cosmic ray transport in the Galaxy.

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY (2021)

Add to Collection

Article Multidisciplinary Sciences

Ultrahigh-energy photons up to 1.4 petaelectronvolts from 12 γ-ray Galactic sources

Zhen Cao et al.

Summary: The extension of the cosmic-ray spectrum beyond 1 petaelectronvolt indicates the existence of PeVatrons, cosmic-ray factories that accelerate particles to PeV energies. Detection of ultrahigh-energy gamma radiation is a key signature of PeVatrons, with ongoing efforts to locate and identify these extreme accelerators. Despite detecting high-energy gamma rays from various sources, the exact origin and identity of the PeVatrons responsible for the ultrahigh-energy gamma rays remain unknown.

NATURE (2021)

Add to Collection

Article Astronomy & Astrophysics

Origin of Galactic Sub-PeV Diffuse Gamma-Ray Emission: Constraints from High-energy Neutrino Observations

Ruo-Yu Liu et al.

Summary: Recently discovered diffuse gamma-rays from the Galactic disk in a specific energy range may be related to conventional Galactic cosmic-ray propagation models, but tension arises with the non-detection of Galactic neutrino emissions by the IceCube neutrino telescope. Further analysis suggests that the presence of additional cosmic-ray components from sources like the Cygnus Cocoon region could alleviate this tension, implying the existence of extreme accelerators in the Cygnus region.

ASTROPHYSICAL JOURNAL LETTERS (2021)

Add to Collection

Article Astronomy & Astrophysics

Discovery of a New Gamma-Ray Source, LHAASO J0341+5258, with Emission up to 200 TeV

Zhen Cao et al.

Summary: A new unidentified extended gamma-ray source named LHAASO J0341+5258 with significant above 25 TeV has been reported in the Galactic plane, showcasing distinct spectral characteristics and potential origins under discussion.

ASTROPHYSICAL JOURNAL LETTERS (2021)

Add to Collection

Article Astronomy & Astrophysics

Observation of Photons above 300 TeV Associated with a High-energy Neutrino from the Cygnus Region

D. D. Dzhappuev et al.

Summary: This study reports the first evidence of joint production of high-energy neutrinos and gamma-rays in a Galactic source, confirming the interaction between cosmic rays and ambient matter and radiation. By observing a high-energy neutrino event from the direction of the Cygnus Cocoon PeVatron and detecting an excess of atmospheric air showers from the same direction, researchers were able to confirm this phenomenon.

ASTROPHYSICAL JOURNAL LETTERS (2021)

Add to Collection

Article Astronomy & Astrophysics

Probing the hadronic nature of the gamma-ray emission associated with Westerlund 2

Enrique Mestre et al.

Summary: By analyzing Fermi-LAT data from the star-forming region Westerlund 2, this study provides new clues about the origin of gamma-ray emission, supporting the hypothesis that star-forming regions can contribute to the cosmic ray sea observed in our Galaxy. The characteristics of the bright pulsar PSRJ1023-5746 and the extended source FGESJ1023.3-5747 were investigated, leading to the identification of FGESJ1023.3-5747 as the GeV counterpart of the TeV source HESSJ1023-575.

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY (2021)

Add to Collection

Article Astronomy & Astrophysics

SRG/eROSITA discovery of a large circular SNR candidate G116.6-26.1: SN Ia explosion probing the gas of the Milky Way halo?

E. M. Churazov et al.

Summary: This study reports the discovery of a new X-ray-selected supernova remnant (SNR) candidate with a large angular extent and X-ray spectrum dominated by emission lines of oxygen ions. The observational properties suggest that this SNR candidate originated from a Type Ia supernova explosion in the low density and hot gas of the Milky Way's halo. If confirmed, this rare object would provide valuable information about the physical conditions near the interface between the Milky Way's disk and halo.

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY (2021)

Add to Collection

Article Astronomy & Astrophysics

Evidence of 200 TeV Photons from HAWC J1825-134

A. Albert et al.

Summary: The Earth is bombarded by ultrarelativistic particles known as cosmic rays, believed to have a Galactic origin. The HAWC observatory discovered a gamma-ray source, HAWC J1825-134, extending beyond 200 TeV, coincident with a giant molecular cloud with a high gas density of 700 protons/cm(-3). It is likely that cosmic rays accelerated to energies of several PeV colliding with the ambient gas produce the observed radiation.

ASTROPHYSICAL JOURNAL LETTERS (2021)

Add to Collection

Article Astronomy & Astrophysics

The cosmic-ray content of the Orion-Eridanus superbubble

T. Joubaud et al.

ASTRONOMY & ASTROPHYSICS (2020)

Add to Collection

Article Astronomy & Astrophysics

Realistic modelling of wind and supernovae shocks in star clusters: addressing Ne-22/Ne-20 and other problems in Galactic cosmic rays

Siddhartha Gupta et al.

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY (2020)

Add to Collection

Article Astronomy & Astrophysics

Diffuse γ-ray emission toward the massive star-forming region, W40

Xiao-Na Sun et al.

ASTRONOMY & ASTROPHYSICS (2020)

Add to Collection

Review Astronomy & Astrophysics

High-Energy Particles and Radiation in Star-Forming Regions

Andrei M. Bykov et al.

SPACE SCIENCE REVIEWS (2020)

Add to Collection

Article Astronomy & Astrophysics

Particle acceleration at colliding shock waves

T. Vieu et al.

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY (2020)

Add to Collection

Article Astronomy & Astrophysics

Massive stars as major factories of Galactic cosmic rays

Felix Aharonian et al.

NATURE ASTRONOMY (2019)

Add to Collection

Article Astronomy & Astrophysics

Cosmic Rays in Superbubbles

T. Tolksdorf et al.

ASTROPHYSICAL JOURNAL (2019)

Add to Collection

Proceedings Paper Physics, Multidisciplinary

Wolf-Rayet stars in young massive star clusters as potential sources of Galactic cosmic rays

M. E. Kalyashova et al.

INTERNATIONAL CONFERENCE PHYSICA.SPB/2019 (2019)

Add to Collection

Article Astronomy & Astrophysics

Generalized Fermi acceleration

Martin Lemoine

PHYSICAL REVIEW D (2019)

Add to Collection

Article Astronomy & Astrophysics

Diffuse γ-ray emission in the vicinity of young star cluster Westerlund 2

Rui-zhi Yang et al.

ASTRONOMY & ASTROPHYSICS (2018)

Add to Collection

Article Astronomy & Astrophysics

Diffuse γ-ray emission in the vicinity of young star cluster Westerlund 2

Rui-zhi Yang et al.

ASTRONOMY & ASTROPHYSICS (2018)

Add to Collection

Article Engineering, Aerospace

Cosmic rays from supernova remnants and superbubbles

Richard E. Lingenfelter

ADVANCES IN SPACE RESEARCH (2018)

Add to Collection

Article Astronomy & Astrophysics

A Very High Energy γ-Ray Survey toward the Cygnus Region of the Galaxy

A. U. Abeysekara et al.

ASTROPHYSICAL JOURNAL (2018)

Add to Collection

Article Astronomy & Astrophysics

Search for Extended Sources in the Galactic Plane Using Six Years of Fermi-Large Area Telescope Pass 8 Data above 10GeV

M. Ackermann et al.

ASTROPHYSICAL JOURNAL (2017)

Add to Collection

Article Astronomy & Astrophysics

Exact solution of the Fokker-Planck equation for isotropic scattering

M. A. Malkov

PHYSICAL REVIEW D (2017)

Add to Collection

Article Astronomy & Astrophysics

Starburst galaxies as seen by gamma-ray telescopes

Stefan Ohm

COMPTES RENDUS PHYSIQUE (2016)

Add to Collection

Article Astronomy & Astrophysics

The massive star population of Cygnus OB2

Nicholas J. Wright et al.

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY (2015)

Add to Collection

Review Astronomy & Astrophysics

Nonthermal particles and photons in starburst regions and superbubbles

Andrei M. Bykov

ASTRONOMY AND ASTROPHYSICS REVIEW (2014)

Add to Collection

Article Astronomy & Astrophysics

IDENTIFICATION OF THE TeV GAMMA-RAY SOURCE ARGO J2031+4157 WITH THE CYGNUS COCOON

B. Bartoli et al.

ASTROPHYSICAL JOURNAL (2014)

Add to Collection

Article Astronomy & Astrophysics

THE DISTANCE TO THE MASSIVE GALACTIC CLUSTER WESTERLUND 2 FROM A SPECTROSCOPIC AND HST PHOTOMETRIC STUDY

Carlos A. Vargas Alvarez et al.

ASTRONOMICAL JOURNAL (2013)

Add to Collection

Article Astronomy & Astrophysics

ANALYTIC SOLUTION FOR SELF-REGULATED COLLECTIVE ESCAPE OF COSMIC RAYS FROM THEIR ACCELERATION SITES

M. A. Malkov et al.

ASTROPHYSICAL JOURNAL (2013)

Add to Collection

Article Astronomy & Astrophysics

emcee: The MCMC Hammer

Daniel Foreman-Mackey et al.

PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF THE PACIFIC (2013)

Add to Collection

Article Astronomy & Astrophysics

SPECTRUM AND MORPHOLOGY OF THE TWO BRIGHTEST MILAGRO SOURCES IN THE CYGNUS REGION: MGRO J2019+37 AND MGRO J2031+41

A. A. Abdo et al.

ASTROPHYSICAL JOURNAL (2012)

Add to Collection

Review Astronomy & Astrophysics

Cosmic Rays in Galactic and Extragalactic Magnetic Fields

Felix Aharonian et al.

SPACE SCIENCE REVIEWS (2012)

Add to Collection

Article Astronomy & Astrophysics

Revisiting the Westerlund 2 field with the HESS telescope array

A. Abramowski et al.

ASTRONOMY & ASTROPHYSICS (2011)

Add to Collection

Article Multidisciplinary Sciences

A Cocoon of Freshly Accelerated Cosmic Rays Detected by Fermi in the Cygnus Superbubble

M. Ackermann et al.

SCIENCE (2011)

Add to Collection

Article Astronomy & Astrophysics

On the shape of the spectrum of cosmic rays accelerated inside superbubbles

G. Ferrand et al.

ASTRONOMY & ASTROPHYSICS (2010)

Add to Collection

Article Astronomy & Astrophysics

Anisotropy vs chemical composition at ultra-high energies

Martin Lemoine et al.

JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS (2009)

Add to Collection

Article Astronomy & Astrophysics

The OB association origin of galactic cosmic rays

W. R. Binns et al.

NEW ASTRONOMY REVIEWS (2008)

Add to Collection

Article Astronomy & Astrophysics

TeV gamma-ray sources from a survey of the Galactic plane with Milagro

A. A. Abdo et al.

ASTROPHYSICAL JOURNAL (2007)

Add to Collection

Article Astronomy & Astrophysics

Discovery of TeV gamma-ray emission from the Cygnus region of the Galaxy

A. A. Abdo et al.

ASTROPHYSICAL JOURNAL (2007)

Add to Collection

Article Astronomy & Astrophysics

Diffuse, nonthermal X-ray emission from the Galactic star cluster Westerlund 1

Michael P. Muno et al.

ASTROPHYSICAL JOURNAL (2006)

Add to Collection

Article Astronomy & Astrophysics

Energy spectra of gamma rays, electrons, and neutrinos produced at proton-proton interactions in the very high energy regime

S. R. Kelner et al.

PHYSICAL REVIEW D (2006)

Add to Collection

Article Astronomy & Astrophysics

Dissipation of magnetohydrodynamic waves on energetic particles: Impact on interstellar turbulence and cosmic-ray transport

Vladimir S. Ptuskin et al.

ASTROPHYSICAL JOURNAL (2006)

Add to Collection

Article Astronomy & Astrophysics

Superbubbles and energetic particles in the Galaxy - I. Collective effects of particle acceleration

E Parizot et al.

ASTRONOMY & ASTROPHYSICS (2004)

Add to Collection

Article Astronomy & Astrophysics

A study of Cygnus OB2: Pointing the way toward finding our galaxy's super-star clusters

MM Hanson

ASTROPHYSICAL JOURNAL (2003)

Add to Collection

Article Astronomy & Astrophysics

An unidentified TeV source in the vicinity of Cygnus OB2

F Aharonian et al.

ASTRONOMY & ASTROPHYSICS (2002)

Add to Collection

Article Astronomy & Astrophysics

A model of particle acceleration to high energies by multiple supernova explosions in OB associations

AM Bykov et al.

ASTRONOMY LETTERS-A JOURNAL OF ASTRONOMY AND SPACE ASTROPHYSICS (2001)

Add to Collection

Review Astronomy & Astrophysics

Particle acceleration and nonthermal phenomena in superbubbles

AM Bykov

SPACE SCIENCE REVIEWS (2001)

Add to Collection

© Peeref 2019-2024. All rights reserved.