Home > Publications database > Gamma-ray detection of newly discovered Ancora SNR: G288.8-6.3 > print

001     598360
005     20241110102039.0
024 7 _ |a Burger-Scheidlin:2023iue
|2 INSPIRETeX
024 7 _ |a inspire:2713489
|2 inspire
024 7 _ |a arXiv:2310.14431
|2 arXiv
024 7 _ |a altmetric:155701682
|2 altmetric
037 _ _ |a PUBDB-2023-06788
041 _ _ |a English
088 _ _ |a arXiv:2310.14431
|2 arXiv
100 1 _ |a Burger-Scheidlin, Christopher
|0 P:(DE-HGF)0
|b 0
|e Corresponding author
245 _ _ |a Gamma-ray detection of newly discovered Ancora SNR: G288.8-6.3
260 _ _ |c 2023
336 7 _ |a Preprint
|b preprint
|m preprint
|0 PUB:(DE-HGF)25
|s 1709283570_741176
|2 PUB:(DE-HGF)
336 7 _ |a WORKING_PAPER
|2 ORCID
336 7 _ |a Electronic Article
|0 28
|2 EndNote
336 7 _ |a preprint
|2 DRIVER
336 7 _ |a ARTICLE
|2 BibTeX
336 7 _ |a Output Types/Working Paper
|2 DataCite
500 _ _ |a 11 pages, 6 figures
520 _ _ |a The supernova remnant (SNR) G288.8-6.3 was recently discovered as a faint radio shell at large Galactic latitude using observations with ASKAP in the EMU survey. Here, we make the first detailed investigation of the $\gamma$-ray emission from the G288.8-6.3 region, aiming to characterise the high-energy emission in the GeV regime from the newly discovered SNR, dubbed Ancora. 15 years of Fermi-Large Area Telescope (LAT) data were analysed at energies between 400 MeV and 1 TeV and the excess seen in the region was modelled using different spatial and spectral models. We detect spatially extended $\gamma$-ray emission coinciding with the radio SNR, with detection significance up to 8.8 $\sigma$. A radial disk spatial model in combination with a power-law spectral model with an energy flux of $(4.80 \pm 0.91) \times 10^{-6}$$\text{MeV}$$\text{cm}^{-2}$$\text{s}^{-1}$, with the spectrum extending up to around 5 GeV was found to be the preferred model. Morphologically, hotspots seen above 1 GeV are well-correlated with the bright western part of the radio shell. The emission is more likely to be of leptonic origin given the estimated gas density in the region and the estimated distance and age of the SNR, but a hadronic scenario cannot be ruled out. Ancora is the eighth SNR detected at high Galactic latitude with Fermi-LAT. This new population of remnants has the potential to constrain the physics of particle diffusion and escape from SNRs into the Galaxy.
536 _ _ |a 613 - Matter and Radiation from the Universe (POF4-613)
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588 _ _ |a Dataset connected to DataCite
693 _ _ |0 EXP:(DE-MLZ)NOSPEC-20140101
|5 EXP:(DE-MLZ)NOSPEC-20140101
|e No specific instrument
|x 0
700 1 _ |a Brose, Robert
|b 1
700 1 _ |a Mackey, Jonathan
|b 2
700 1 _ |a Filipovic, Miroslav D.
|b 3
700 1 _ |a Goswami, Pranjupriya
|b 4
700 1 _ |a Guillen, Enrique Mestre
|b 5
700 1 _ |a de Oña Wilhelmi, Emma
|0 P:(DE-H253)PIP1085234
|b 6
|u desy
700 1 _ |a Sushch, Iurii
|b 7
856 4 _ |u https://bib-pubdb1.desy.de/record/598360/files/2310.14431v1.pdf
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910 1 _ |a Deutsches Elektronen-Synchrotron
|0 I:(DE-588b)2008985-5
|k DESY
|b 6
|6 P:(DE-H253)PIP1085234
913 1 _ |a DE-HGF
|b Forschungsbereich Materie
|l Matter and the Universe
|1 G:(DE-HGF)POF4-610
|0 G:(DE-HGF)POF4-613
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914 1 _ |y 2023
915 _ _ |a Published
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920 1 _ |0 I:(DE-H253)Z_THAT-20210408
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|l Theoretische Astroteilchenphysik
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920 1 _ |0 I:(DE-H253)ZEU-HESS-20140213
|k ZEU-HESS
|l High Energy Steroscopic System
|x 1
980 _ _ |a preprint
980 _ _ |a VDB
980 _ _ |a I:(DE-H253)Z_THAT-20210408
980 _ _ |a I:(DE-H253)ZEU-HESS-20140213
980 _ _ |a UNRESTRICTED

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