A First Look at Periodicity in HAWC with TeV Binaries

Brisbois, C.; Fleischhack, Henrike; Rho, Chang Dong; Hona, B.; Huentemeyer, Petra

doi:10.22323/1.301.0698

Cited by 2 publications

(3 citation statements)

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“…This region is extremely crowded with gamma-ray sources and there is the potential for contamination of the source flux from nearby sources. Multi-source and multi-component fits are not considered here; see [19,20,21] for more sophisticated analyses of some of these regions. Likewise, potential…”

Section: Resultsmentioning

confidence: 99%

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First HAWC Spectra of Galactic Gamma-ray Sources Above 100 TeV and the Implications for Cosmic-ray Acceleration

Malone¹

2019

Proceedings of 36th International Cosmic Ray Conference — PoS(ICRC2019)

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We present the first catalogs of the highest-energy (above 56 TeV and 100 TeV) gamma-ray sources seen by the High Altitude Water Cherenkov (HAWC) Observatory. The wide field-ofview of HAWC naturally lends itself to unbiased all-sky surveys and newly developed event-byevent gamma-ray energy reconstruction algorithms have allowed unprecedented energy resolution. The sources presented here are the highest-energy sources ever detected. All are coincident with known lower-energy gamma-ray sources within our Galaxy. These objects may have implications for the sources of Galactic cosmic rays; since Galactic CRs have been observed up to PeV energies, sources accelerating particles to these energies must exist. These sources, called "PeVatrons", would have corresponding hard gamma-ray spectra that extend to high energies without any spectral break or cutoff. We will present measurements of the spectra of these highest-energy gamma-ray sources and discuss if any of them can be identified as PeVatron candidates.

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Section: Resultsmentioning

confidence: 99%

“…Due to this limitation, it is impossible to compute spectra for some of these sources with this analysis technique. For example, the eHWC J2030+412 region overlaps both a PWN and the TeV counterpart of Fermi cocoon [22,19]. Without a multi-source fit, the spectrum of the cocoon region is contaminated by the PWN.…”

Section: Pos(icrc2019)734mentioning

confidence: 99%

First HAWC Spectra of Galactic Gamma-ray Sources Above 100 TeV and the Implications for Cosmic-ray Acceleration

Malone¹

2019

Proceedings of 36th International Cosmic Ray Conference — PoS(ICRC2019)

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“…Previous VERITAS observations showed also a complicated morphology of a VHE gamma-ray source in this region, consisting of a PWN and a Cocoon. HAWC observations revealed that the cocoon emission extends beyond 100 TeV and shows a spectral break with respect to the Fermi-LAT spectrum [53]. The CRs in the cocoon could have originated in the OB2 association.…”

Section: Other Galactic Sourcesmentioning

confidence: 91%

Summary of the 36 th ICRC Gamma-ray Indirect sessions

Sitarek¹

2019

Proceedings of 36th International Cosmic Ray Conference — PoS(ICRC2019)

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A First Look at Periodicity in HAWC with TeV Binaries

Cited by 2 publications

References 3 publications

First HAWC Spectra of Galactic Gamma-ray Sources Above 100 TeV and the Implications for Cosmic-ray Acceleration

First HAWC Spectra of Galactic Gamma-ray Sources Above 100 TeV and the Implications for Cosmic-ray Acceleration

Summary of the 36 th ICRC Gamma-ray Indirect sessions

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