A search for new supernova remnant shells in the Galactic plane with H.E.S.S

Abstract

A search for new supernova remnants (SNRs) has been conducted using TeV gamma-ray data from the H.E.S.S. Galactic plane survey. As an identification criterion, shell morphologies that are characteristic for known resolved TeV SNRs have been used. Three new SNR candidates were identified in the H.E.S.S. data set with this method. Extensive multiwavelength searches for counterparts were conducted. A radio SNR candidate has been identified to be a counterpart to HESS J1534-571. The TeV source is therefore classified as a SNR. For the other two sources, HESS J1614-518 and HESS J1912+101, no identifying counterparts have been found, thus they remain SNR candidates for the time being. TeV-emitting SNRs are key objects in the context of identifying the accelerators of Galactic cosmic rays. The TeV emission of the relativistic particles in the new sources is examined in view of possible leptonic and hadronic emission scenarios, taking the current multiwavelength knowledge into account.

arXiv commentAccepted for publication in A&A, 24 pages, 13 figures. Minor corrections in v2

References in corpus (75)

• The Large Area Telescope on the Fermi Gamma-ray Space Telescope Mission
• The ATNF Pulsar Catalogue
• The SIMBAD astronomical database
• The Milky Way in Molecular Clouds: A New Complete CO Survey
• The VizieR database of Astronomical Catalogues
• Energy spectra of gamma-rays, electrons and neutrinos produced at proton-proton interactions in the very high energy regime
• Observations of the Crab Nebula with H.E.S.S
• Statistics: Handle with Care, Detecting Multiple Model Components with the Likelihood Ratio Test
• The Boston University-Five College Radio Astronomy Observatory Galactic Ring Survey
• The H.E.S.S. survey of the Inner Galaxy in very high-energy gamma-rays
• Acceleration of petaelectronvolt protons in the Galactic Centre
• High-energy particle acceleration in the shell of a supernova remnant
• The H.E.S.S. Galactic plane survey
• SUMSS: A Wide-Field Radio Imaging Survey of the Southern Sky. I. Science goals, survey design and instrumentation
• The VLA Galactic Plane Survey
• A New $\Sigma -D$ Relation and Its Application to the Galactic Supernova Remnant Distribution
• The Southern Galactic Plane Survey: HI Observations and Analysis
• Background Modelling in Very-High-Energy gamma-ray Astronomy
• A high performance likelihood reconstruction of gamma-rays for Imaging Atmospheric Cherenkov Telescopes
• A detailed spectral and morphological study of the gamma-ray supernova remnant RX J1713.7-3946 with H.E.S.S
• 2FHL: The Second Catalog of Hard Fermi-LAT Sources
• Faint X-ray sources resolved in the ASCA Galactic plane survey and their contribution to the Galactic ridge X-ray emission
• Evidence for TeV gamma ray emission from Cassiopeia A
• The Molonglo Galactic Plane Survey (MGPS-2): Compact Source Catalogue
• HESS VHE Gamma-Ray Sources Without Identified Counterparts
• Discovery of VHE Gamma Radiation from IC443 with the MAGIC Telescope
• H.E.S.S. observations of the supernova remnant RX J0852.0-4622: shell-type morphology and spectrum of a widely extended VHE gamma-ray source
• Energy dependent gamma-ray morphology in the Pulsar wind nebula HESSJ1825-137
• HESS Observations and VLT Spectroscopy of PG 1553+113
• The distribution of cosmic-ray sources in the Galaxy, gamma-rays, and the gradient in the CO-to-H2 relation
• Discovery of TeV Gamma Ray Emission from Tycho's Supernova Remnant
• First detection of VHE gamma-rays from SN 1006 by H.E.S.S
• Radio emission from Supernova Remnants
• The population of TeV pulsar wind nebulae in the H.E.S.S. Galactic Plane Survey
• Gamma-Hadron Separation in Very-High-Energy gamma-ray astronomy using a multivariate analysis method
• The exceptionally powerful TeV gamma-ray emitters in the Large Magellanic Cloud
• The Compact Central Object in Cas A: A Neutron Star with Hot Polar Caps or a Black Hole?
• The Southern Galactic Plane Survey: Polarized Radio Continuum Observations and Analysis
• TeV Gamma-Rays from Old Supernova Remnants
• Discovery of extended VHE γ-ray emission from the vicinity of the young massive stellar cluster Westerlund 1
• H.E.S.S. observations of RX J1713.7-3946 with improved angular and spectral resolution; evidence for gamma-ray emission extending beyond the X-ray emitting shell
• Detection of extended very-high-energy gamma-ray emission towards the young stellar cluster Westerlund 2
• On the size distribution of supernova remnants in the Magellanic Clouds
• Hadronic gamma-rays from RX J1713.7-3946?
• Classification of X-ray Sources in the XMM-Newton Serendipitous Source Catalog
• Discovery of the radio and X-ray counterpart of TeV Gamma-ray source HESS J1731-347
• A new SNR with TeV shell-type morphology: HESS J1731-347
• The distance and neutral environment of the massive stellar cluster Westerlund 1
• The neutron star in HESS J1731-347: CCOs as laboratories to study the equation of state of superdense matter
• The many sides of RCW 86: a type Ia supernova remnant evolving in its progenitor's wind bubble
• Thermal and Non-thermal X-Rays from the LMC Super Bubble 30 Dor C
• Stellar clusters in the inner Galaxy and their correlation with cold dust emission
• Population study of Galactic supernova remnants at very high $\gamma$-ray energies with H.E.S.S.
• Diffuse Hard X-ray Sources Discovered with the ASCA Galactic Plane Survey
• Discovery of a VHE gamma-ray source coincident with the supernova remnant CTB 37A
• Impact of aerosols and adverse atmospheric conditions on the data quality for spectral analysis of the H.E.S.S. telescopes
• Two Magnetar Candidates in HESS Supernova Remnants
• Deeper H.E.S.S. observations of Vela Junior (RX J0852.0$-$4622): Morphology studies and resolved spectroscopy
• Interstellar protons in the TeV gamma-ray SNR HESS J1731-347:Possible evidence for the coexistence of hadronic and leptonic gamma-rays
• A Diffuse X-Ray Source, AX J1843.8-0352: Association with the Radio Complex G28.6-0.1 and Identification of a New Supernova Remnant
• A search for TeV gamma-ray emission from SNRs, pulsars and unidentified GeV sources in the Galactic plane in the longitude range between -2 deg and 85 deg
• A non-pulsating neutron star in the supernova remnant HESS J1731-347 / G353.6-0.7 with a carbon atmosphere
• X-ray emission from HESS J1731-347/SNR G353.6-0.7 and Central Compact Source XMMS J173203-344518
• Identification of HESS J1303-631 as a Pulsar Wind Nebula through gamma-ray, X-ray and radio observations
• On the X-ray Emission from Massive Star Clusters and their Evolving Superbubbles
• Detailed spectral and morphological analysis of the shell type SNR RCW 86
• Swift/XRT follow-up observations of TeV sources of the HESS Inner Galaxy survey
• Search for Pulsar Wind Nebula Associations of Unidentified TeV Gamma-Ray Sources
• XMM-Newton Observations of G32.45+0.1and G38.55+0.0: diffuse hard X-ray sources found with the ASCA Galactic Plane Survey
• Discovery of very-high-energy gamma-ray emission from the vicinity of PSR J1913+1011 with H.E.S.S
• Is HESS J1912+101 associated with an old Supernova Remnant?
• Optical Discovery of an Apparent Galactic Supernova Remnant G159.6+7.3
• Detection of GeV Gamma-rays from HESS J1534-571 and Multiwavelength Implications for the Origin of the Non-thermal Emission
• Discovery of Extended X-Ray emission from the unidentified TeV source HESS J1614-518 using the Suzaku Satellite
• Nature of the Unidentified TeV Source HESS J1614-518, Revealed by Suzaku and XMM-Newton Observations

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