INTEGRAL IGR J18135-1751=HESS J1813-178: A new cosmic high energy accelerator from keV to TeV

Abstract

We report the discovery of a soft gamma ray source, namely IGR J18135-1751, detected with the IBIS imager on board the INTEGRAL satellite. The source is persistent and has a 20-100 keV luminosity of $\sim$5.7 $\times$ 10${}^{34}$ erg s${}^{-1}$ (assuming a distance of 4kpc). This source is coincident with one of the eight unidentified objects recently reported by the HESS collaboration as part of the first TeV survey of the inner part of the Galaxy. Two of these new sources found along the Galactic plane, HESS J1813-178 and HESS J1614-518, have no obvious lower energy counterpart, a fact that motivated the suggestion that they might be dark cosmic ray accelerators. HESS J1813-178 has a strongly absorbed X-ray counterpart, the ASCA source AGPS273.4-17.8, showing a power law spectrum with photon index $\sim$ 1.8 and a total (galactic plus intrinsic) absorption corresponding to N${}_H$ $\sim$5 $\times$ 10${}^{22}$ cm${}^{-2}$. We hypothesize that the source is a pulsar wind nebula embedded in its supernova remnant. The lack of X/gamma-ray variability, the radio morphology and the ASCA spectrum are all compatible with this interpretation. In any case we rule out the hypothesis that HESS J1813-178 belongs to a new class of TeV objects or that it is a cosmic "dark particle" accelerator.

arXiv commentRevised version accepted for publication in ApJ Letters; 12 pages, 3 Figures. Figure 1 printed in low resolution

References in corpus (14)

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• Very high energy gamma rays from the direction of Sagittarius A*
• Calibration of cameras of the H.E.S.S. detector
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• The INTEGRAL IBIS/ISGRI System Point Spread Function and Source Location Accuracy
• IBIS/PICsIT in-flight performances
• Discovery of a Radio Supernova Remnant and Non-thermal X-rays Coincident with the TeV Source HESS J1813-178
• First results from the INTEGRAL Galactic plane scans
• In flight calibration of the ISGRI camera
• Chandra Observation of the Unidentified TeV Gamma-Ray Source HESS J1303-631 in the Galactic Plane

Cited by in corpus (35)

• The H.E.S.S. survey of the Inner Galaxy in very high-energy gamma-rays
• INTEGRAL/IBIS all-sky survey in hard X-rays
• Potential Neutrino Signals from Galactic Gamma-Ray Sources
• INTEGRAL/IBIS nine-year Galactic Hard X-Ray Survey
• The soft gamma-ray pulsar population: an high-energy overview
• INTEGRAL/IBIS 7-year All-Sky Hard X-Ray Survey. Part II: Catalog of Sources
• Chandra Localizations and Spectra of INTEGRAL Sources in the Galactic Plane: The Cycle 9 Sample
• Discovery of a Radio Supernova Remnant and Non-thermal X-rays Coincident with the TeV Source HESS J1813-178
• INTEGRAL/IBIS 17-yr hard X-ray all-sky survey
• XMM-Newton observations of HESS J1813-178 reveal a composite Supernova remnant
• MAGIC observations of very high energy gamma-rays from HESS J1813-178
• Discovery of the Putative Pulsar and Wind Nebula Associated with the TeV Gamma-ray Source HESS J1813-178
• Discovery of a Highly Energetic X-ray Pulsar Powering HESS J1813-178 in the Young Supernova Remnant G12.82-0.02
• Associations of Very High Energy Gamma-Ray Sources Discovered by H.E.S.S. with Pulsar Wind Nebulae
• Suzaku Observations of HESS J1616-508: Evidence for a Dark Particle Accelerator
• Swift/XRT follow-up observations of TeV sources of the HESS Inner Galaxy survey
• INTEGRAL observations of AGN obscured by the Galactic Plane
• GeV emission in the region of HESS J1809-193 and HESS J1813-178: is HESS J1809-193 a proton pevatron?
• Radio Detection of PSR J1813-1749 in HESS J1813-178: The Most Scattered Pulsar Known
• Multiband Nonthermal Radiative Properties of HESS J1813-178
• 15 years of Galactic surveys and hard X-ray Background measurements
• Proper motion, spectra, and timing of PSR J1813-1749 using Chandra and NICER
• Status of Identification of VHE gamma-ray sources
• VHE Gamma-ray supernova remnants
• Galactic Observatory Science with the ASTRI Mini-Array at the Observatorio del Teide
• The Enigmatic compact radio source coincident with the energetic X-ray pulsar PSR J1813$-$1749 and HESS J1813$-$178
• Study of maximum electron energy of sub-PeV pulsar wind nebulae by multiwavelength modelling
• Suzaku observation of the unidentified VHE gamma-ray source HESS J1702-420
• The properties of the putative pulsar associated with IGR J18135-1751/HESS J1813-178
• Radio Proper Motions of the Energetic Pulsar PSR~J1813$-$1749
• INTEGRAL high energy sky: The keV to MeV cosmic sources
• The INTEGRAL - HESS/MAGIC connection: a new class of cosmic high energy accelerators from keV to TeV
• The Extreme Sky - Seven Years of INTEGRAL
• INTEGRAL View of TeV Sources: A Legacy for the CTA Project
• Unveiling extended gamma-ray emission around HESS J1813-178