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UID:69f328b54da29
SUMMARY:הרצאה: מתפרצי גמא\, גלי כבידה ותחילתה 
 של Multi-messenger astronomy
DESCRIPTION:מרצה:&nbsp\;פרופ' אסף פאר - אוניברסיטת 
 בר-אילן.
 תקציר באנגלית (ההרצאה בעברית):
 
 Gamma ray bursts (GRBs) are the most violent explosions in the universe\, 
 releasing an energy equivalent to a few percent of the entire energy in ou
 r sun within a few seconds. When they occur\, they outshine the entire gam
 ma-ray sky. While being studied extensively since the 1990’s\, their ori
 gin remains a mystery.
 Gravitational waves\, ripples in space-time itsel
 f have been predicted by Einstein as part of his theory of general relativ
 ity\, over a 100 years ago. It took nearly a 100 years until they were fir
 st detected in 2015. Since then\, 6 events were recorded.
 A major event 
 took place in August 2017\, with the first confirmed detection of a GRB as
 sociated with the gravitational wave (GW) signal that results from the mer
 ger of binary neutron star system. This provides the first \"smoking gun\"
  for the origin of (part of) gamma-ray bursts. Close investigation of this
  event showed evidence for the production of heavy elements (heavier than 
 Iron)\, thereby completing the answer of the long standing problem of heav
 y element production.&nbsp\;
 
 עלות:
 לחברי האגודה וב
 ני משפחתם מדרגה ראשונה: חינם.
 
 ללא חברי
 ם: מבוגר - 30 ש\"ח\, ילד (עד גיל 14) - 25 ש\"ח\, סטו
 דנטים\, חיילים ופנסיונרים - 20 ש\"ח.
 הצטרפו
  לאגודה
 מומלץ להגיע מעט לפני תחילת ההרצ
 אה על מנת לתפוס מקום.
LOCATION:Ha-Meri Street 66\, Givatayim\, Israel
DTSTART:20181129T193000Z
DTEND:20181129T210000Z
DTSTAMP:20260430T100229Z
ORGANIZER;CN=האגודה הישראלית לאסטרונומיה:MAILTO:ob
 servations@astronomy.org.il
GEO:32.070509;34.815134
X-APPLE-STRUCTURED-LOCATION;VALUE=URI;X-ADDRESS=Ha-Meri Street 66\, Givatay
 im\, Israel;X-APPLE-RADIUS=72;X-TITLE=מצפה הכוכבים גבעתיי
 ם:32.070509;34.815134
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