Extended very-high-energy (VHE; 0.1-100~TeV) $\gamma$-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 certain subgroup of pulsars. With 2321 days of observation, the High Altitude Water Cherenkov (HAWC) Gamma-Ray Observatory detected VHE $\gamma$-ray emission at the location of the radio-quiet pulsar PSR J0359+5414 with $>6\sigma$ significance. By performing likelihood tests with different spectral and spatial models and comparing the TeV spectrum with multi-wavelength 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 multi-wavelength follow-ups are needed to confirm this nature. This new halo candidate is located in a non-crowded 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.
Heliophysics 2050 White Paper
Heliophysics 2050 Workshop
11 pages, 5 figures. Submitted to MNRAS, comments welcome
10 pages, 4 figures, 2 tables. Accepted for publication on ApJ
42 page, 25 figures, 8 tables and 8 appendices. Key figures: fig. 16 & 17. Comments are welcome
5 pages, 7 figures, submitted to MNRAS
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15 pages, 10 figures, 2 tables
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8 pages, 4 figures
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23 pages, 10 figures (Fig 9 is the key figure). Submitted to ApJ. The full figure set and ancillary data products can be found at this ftp URL
19 pages, 16 figures, 4 tables
A co-first author paper Lustig-Yaeger and Fu et al., Under review in Nature Astronomy, Comments welcome
11 pages, 4 figures
Accepted to AJ (Jan 10, 2023)
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17 pages, 7 figures
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Submitted to ApJ. Comments are welcome
14 pages, 12 figures, submitted to MNRAS
16 pages, 5 figures
30 pages, 12 figures, 1 table, published by New Astronomy
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11 pages, 3 figures, accepted for publication in MNRAS
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12+4 pages, 4 figures, 3 tables; MNRAS submitted
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15 pages, 8 figures, accepted for publication in MNRAS
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10 pages, 10 figures
20 pages, 15 Tables, 13 Figures, accepted for publication in A&A
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8 pages, 4 figures, accepted for publication in PASA
22 pages, 11 figures, 7 tables, accepted for publication in PASP
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15 pages, 13 figures
22 pages, 11 figures
4 pages, submitted to MNRASL, comments are welcome
Submitted to ApJ with parallel submission to arxiv for logistical reasons; We will update the arxiv submission with the final version once the manuscript was refereed and accepted by ApJ. Data files for all phase functions will be made available once refereeing is concluded. We welcome comments from the community
26 pages, 14 figures, 5 tables. Submitted to ApJ
13 pages, 8 figures
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20 pages, 12 figures