Details

Autor(en) / Beteiligte

• Albert, A.
• Alfaro, R.
• Arteaga-Velázquez, J. C.
• Ayala Solares, H. A.
• Belmont-Moreno, E.
• Capistrán, T.
• Carramiñana, A.
• Casanova, S.
• Cotzomi, J.
• De León, S. Coutiño
• Fuente, E. De la
• de León, C.
• Diaz Hernandez, R.
• DuVernois, M. A.
• Díaz-Vélez, J. C.
• Espinoza, C.
• Fan, K. L.
• Fraija, N.
• Fang, K.
• García-González, J. A.
• Garfias, F.
• Jardin-Blicq, A.
• González, M. M.
• Goodman, J. A.
• Harding, J. P.
• Hernandez, S.
• Huang, D.
• Hueyotl-Zahuantitla, F.
• Hüntemeyer, P.
• Iriarte, A.
• Joshi, V.
• Lara, A.
• Lee, J.
• Vargas, H. León
• Linnemann, J. T.
• Longinotti, A. L.
• Luis-Raya, G.
• Malone, K.
• Martinez, O.
• Martínez-Castro, J.
• Matthews, J. A.
• Morales-Soto, J. A.
• Moreno, E.
• Mostafá, M.
• Nayerhoda, A.
• Nellen, L.
• Newbold, M.
• Nisa, M. U.
• Araujo, Y. Pérez
• Son, Y.
• Pérez-Pérez, E. G.
• Rho, C. D.
• Rosa-González, D.
• Sandoval, A.
• Schneider, M.
• Serna-Franco, J.
• Smith, A. J.
• Springer, R. W.
• Tollefson, K.
• Torres, I.
• Torres-Escobedo, R.
• Wang, X.
• Whitaker, K.
• Willox, E.
• Zhou, H.

Titel

HAWC Detection of a TeV Halo Candidate Surrounding a Radio-quiet Pulsar

Ist Teil von

• Astrophysical journal. Letters, 2023-02, Vol.944 (2), p.L29

Ort / Verlag

Austin: The American Astronomical Society

Erscheinungsjahr

2023

Link zum Volltext

Quelle

Electronic Journals Library

Beschreibungen/Notizen

• Abstract Extended very-high-energy (VHE; 0.1–100 TeV) γ -ray emission has been observed around several middle-aged pulsars and referred to as “TeV halos.” Their formation mechanism remains under debate. It is also unknown whether they are ubiquitous or related to a certain subgroup of pulsars. With 2321 days of observation, the High Altitude Water Cherenkov (HAWC) Gamma-Ray Observatory detected VHE γ -ray emission at the location of the radio-quiet pulsar PSR J0359+5414 with >6 σ significance. By performing likelihood tests with different spectral and spatial models and comparing the TeV spectrum with multiwavelength observations of nearby sources, we show that this excess is consistent with a TeV halo associated with PSR J0359+5414, though future observation of HAWC and multiwavelength follow-ups are needed to confirm this nature. This new halo candidate is located in a noncrowded region in the outer galaxy. It shares similar properties to the other halos but its pulsar is younger and radio-quiet. Our observation implies that TeV halos could commonly exist around pulsars and their formation does not depend on the configuration of the pulsar magnetosphere.