2024ApJ...972...21A

Query : 2024ApJ...972...21A

2024ApJ...972...21A - Astrophys. J., 972, 21 (2024/September-1)

TeV Analysis of a Source-rich Region with the HAWC Observatory: Is HESS J1809-193 a Potential Hadronic PeVatron?

ALBERT A., ALFARO R., ALVAREZ C., ARTEAGA-VELAZQUEZ J.C., AVILA ROJAS D., BABU R., BELMONT-MORENO E., BERNAL A., BREUHAUS M., CABALLERO-MORA K.S., CAPISTRAN T., CARRAMINANA A., CASANOVA S., COTZOMI J., DE LA FUENTE E., DEPAOLI D., DI LALLA N., DIAZ HERNANDEZ R., DINGUS B.L., DUVERNOIS M.A., ESPINOZA C., FAN K.L., FANG K., FICK B., FRAIJA N., GARCIA-GONZALEZ J.A., GARFIAS F., GONZALEZ MUNOZ A., GONZALEZ M.M., GOODMAN J.A., GROETSCH S., HARDING J.P., HERNANDEZ-CADENA S., HERZOG I., HUANG D., HUEYOTL-ZAHUANTITLA F., HUNTEMEYER P., IRIARTE A., JOSHI V., KAUFMANN S., LARA A., LEE J., LEON VARGAS H., LONGINOTTI A.L., LUIS-RAYA G., MALONE K., MARTINEZ-CASTRO J., MATTHEWS J.A., MIRANDA-ROMAGNOLI P., MONTES J.A., MORALES-SOTO J.A., MORENO E., MOSTAFA M., NELLEN L., NEWBOLD M., NISA M.U., NORIEGA-PAPAQUI R., OSORIO M., PEREZ ARAUJO Y., PEREZ-PEREZ E.G., RHO C.D., ROSA-GONZALEZ D., RUIZ-VELASCO E., SALAZAR H., SANDOVAL A., SCHNEIDER M., SERNA-FRANCO J., SMITH A.J., SON Y., SPRINGER R.W., TIBOLLA O., TOLLEFSON K., TORRES I., TORRES-ESCOBEDO R., TURNER R., URENA-MENA F., VARELA E., WANG X., WATSON I.J., WILLOX E., YUN-CARCAMO S., ZHOU H. (The HAWC Collaboration)

Abstract (from CDS):

HESS J1809-193 is an unidentified TeV source, first detected by the High Energy Stereoscopic System (H.E.S.S.) collaboration. The emission originates in a source-rich region that includes several supernova remnants (SNRs) and pulsars including SNR G11.1+0.1, SNR G11.0-0.0, and the young radio pulsar PSR J1809-1917. Originally classified as a pulsar wind nebula candidate, recent studies show the peak of the TeV region overlapping with a system of molecular clouds. This resulted in the revision of the original leptonic scenario to look for alternate hadronic scenarios. Marked as a potential PeVatron candidate, this region has been studied extensively by H.E.S.S. due to its emission extending up to several tens of TeV. In this work, we use 2398 days of data from the High Altitude Water Cherenkov (HAWC) observatory to carry out a systematic source search of the HESS J1809-193 region. We were able to resolve emission detected as an extended component (modelled as a symmetric Gaussian with a 1σ radius of 0.°21) with no clear cutoff at high energies and emitting photons up to 210 TeV. We model the multiwavelength observations for the region around HESS J1809-193 using a time-dependent leptonic model and a lepto-hadronic model. Our model indicates that both scenarios could explain the observed data within the region of HESS J1809-193.

Abstract Copyright: © 2024. The Author(s). Published by the American Astronomical Society.

Journal keyword(s): Gamma-ray astronomy - Astronomical methods - Gamma-ray sources

Simbad objects: 12

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Number of rows : 12
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2026 		#notes
1 HAWC J1809-191 gam 18 09.5 -19 20           ~ 1 0
2 PSR J1809-1917 Psr 18 09 43.147 -19 17 38.10           ~ 128 1
3 SNR G011.1+00.1 SNR 18 09.8 -19 12           ~ 32 0
4 2HWC J1809-190 gam 18 09 50.6 -19 02 12           ~ 7 0
5 SNR G011.0+00.0 SNR 18 10.1 -19 25           ~ 43 1
6 3FGL J1810.1-1910 gam 18 10 11 -19 10.1           ~ 13 0
7 XTE J1810-189 LXB 18 10 20.86 -19 04 11.2           ~ 64 0
8 HESS J1809-193 gam 18 10 31 -19 18.0           ~ 70 1
9 Suzaku J1811-1900 XB? 18 11.0 -19 00           ~ 4 0
10 SNR G011.2-00.3 SNR 18 11 28.9 -19 25 29           ~ 305 1
11 PSR J1811-1926 Psr 18 11 29.15 -19 25 25.4           ~ 136 1
12 3FGL J1811.3-1927c gam 18 11 32.8 -19 25 39           ~ 13 0

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