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SUMMARY:Ph.D. Chang Dong Rho "[NAPP Seminar] Searching for TeV Gamma-ray E
 mission from SS 433 with the HAWC Observatory"  (Host: Prof. Un-ki Yang)
DTSTART;VALUE=DATE-TIME:20191017T070000Z
DTEND;VALUE=DATE-TIME:20191017T083000Z
DTSTAMP;VALUE=DATE-TIME:20260801T183359Z
UID:indico-event-111@sshep.snu.ac.kr
DESCRIPTION:*Speaker : Ph.D. Chang Dong Rho (Sungkyunkwan Univ. /  Univ. 
 of Rochester)\n\n \n\n*Abstract : \n\nAstrophysical sources of very-high-
 energy (VHE) gamma-ray radiation provide unique information about astrophy
 sical particle acceleration and cosmic-ray production. In particular\, com
 pact binary systems\, composed of a compact object (a neutron star or blac
 k hole) in orbit with a massive stellar companion\, provide an ideal envir
 onment for VHE gamma-ray production. They are not only powerful particle a
 ccelerators\, but they also exhibit periodic emission that makes them exce
 llent astrophysical laboratories. However\, only a handful of binary syste
 ms have ever been observed in VHE gamma rays. Partly\, this is because VHE
  gamma-ray binaries appear to be very rare\, and part is due to observatio
 nal bias. Most instruments operating at TeV are pointed and must allocate 
 time to observing many kinds of objects. The High Altitude Water Cherenkov
  (HAWC) Observatory\, on the other hand\, has high uptime (duty cycle >95%
 ) and a wide field of view (2 sr)\, making it well-suited for observing tr
 ansient and time-varying sources such as binaries. HAWC is also currently 
 the only detector that is sensitive to gamma-ray photons above 10 TeV. SS
  433 is a known microquasar that has two jets ("east" and "west") terminat
 ing in radio lobes of a surrounding supernova remnant\, W 50. The recent o
 bservation of SS 433 with HAWC marked the first direct evidence of gamma-r
 ay emission from the jets of a microquasar. Using HAWC data\, we have meas
 ured a VHE flux of e1 in the east lobe and w1 in the west lobe with a comb
 ined post-trial statistical significance of 5.4 sigma.\n\n \n\n \n\n \n
 \n \n\nhttps://sshep.snu.ac.kr/event/111/
LOCATION:B56 521
URL:https://sshep.snu.ac.kr/event/111/
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