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DTSTART;TZID=America/Los_Angeles:20190913T073000
DTEND;TZID=America/Los_Angeles:20190913T213000
DTSTAMP:20260427T103153
CREATED:20190713T083621Z
LAST-MODIFIED:20200604T161554Z
UID:10000934-1568359800-1568410200@www.ocastronomers.org
SUMMARY:General Meeting - September 2019
DESCRIPTION:News from the Universe\n \nThe Virgo and two LIGO Gravitational Wave observatories are in observation mode. They detect more than one inspiral event per week\, of Black Holes and Neutron Stars\, and started making a strange picture of the collapsed-matter Universe. \nWhy are there so many heavy Black Holes out there? How did they form in the early Universe? Why so many inspirals? And also why BH pairs appear to come from random pairing and not from binary star systems? And on another front\, how can pulsar neutron stars be spheres smoother than 20 µm over 12 km radius and still be rigid enough to generate the starquakes believed to cause the pulsar frequency glitches? These are some of the new questions we have to answer. We also learned about the source of at least one class of Gamma Ray Bursts\, the galactic gold factories\, and more. \nRiccardo DeSalvo\n \nA lifetime instrument maker\, starting from the laser of his thesis in Pisa\, then for 15 years in High Energy Physics (CERN and Cornell Lab for Nuclear Studies)\, finally 25 years on Gravitational Waves\, on mechanical design of GW detectors (Virgo\, TAMA\, KAGRA and parts of LIGO)\, initially on seismic isolation\, then on dissipation mechanisms and thermal noise in dielectric coating mirrors\, the limiting factor of GW detection. Presently make a living developing sensors for FB\, and work on coatings and GW developments as a personal hobby\, with 3-4 students. \nViews: 30
URL:https://www.ocastronomers.org/calendar/general-meeting-september-2019/
LOCATION:Irvine Lecture Hall of the Chapman University\, 336 N Center St\, Orange\, CA\, 92866\, United States
CATEGORIES:General Meetings
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DTSTART;TZID=America/Los_Angeles:20181214T113000
DTEND;TZID=America/Los_Angeles:20181214T143000
DTSTAMP:20260427T103153
CREATED:20181109T184351Z
LAST-MODIFIED:20190114T042356Z
UID:10000647-1544787000-1544797800@www.ocastronomers.org
SUMMARY:OCA General Meeting - DEC 2018
DESCRIPTION:Astrophysics learning from the detection of Gravitational Waves\n\nWe often said that the detection of gravitational waves would open a new window on the Universe.\nWell\, it was more surprising than expected.\nI will illustrate the latest events found in the data\, give you a glimpse of the strange things that we see through that window\, and attempt an early summary of some astrophysical implications.\n\nDocuments with in-depth information about the topic from the Erice School Of Nuclear Physics can be downloaded below. \n\nDocument 1\nDocument 2\nDocument 3\n\nAbout OCA General Meetings\nThe OCA has a general meeting held on the second Friday of every month* at Chapman University.\nThese meetings are free and open to the general public.\nThe meetings take place in The Irvine Lecture Hall with seating for approximately 250 people.\nThe Irvine Lecture Hall (located adjacent to the Hashinger Science Center) is near the south east corner of the campus and the nearest cross street is East Palm Ave and North Center Street.\nAfter the slideshow\, the meeting officially starts at 7:30 PM.\nThe basic agenda\, with approximate times\, is as shown below. \n* Please check here for any changes to the date of the meeting (rarely we get a scheduling conflict which results in the meeting being pushed back a week). \nAgenda\n\n\n\n7:00 PM – 7:30 PM\nPre-meeting Slide Show\nArrival of audience. This presentation includes recent astronomical photographs taken by OCA members.\n\n\n7:30 PM – 7:45 PM\nClub Announcements\nUsually presented by the OCA Secretary.\n\n\n7:45 PM – 8:15 PM\n“What’s Up?”\nPresented by various OCA Members and guests from other clubs.\n\n\n8:15 PM – 9:15 PM\nMain Talk\nSpeakers are often from JPL/Caltech and other major educational and astronomical institutions.\nThe level of the talks are usually appropriate for anyone who has an interest in this hobby.\n\n\n9:15 PM – 9:30 PM\nRefreshments Break\nDonuts\, coffee and soda are available for a small donation.\n\n\n9:30 PM – 10:00 PM\n“Ask an Astronomer”\nAnyone can stay behind and ask a panel of experts any burning question related to this hobby.\n\n\n\nFirst Time Attending\nPlan to be there anytime between 7:00 and 7:30. During which a slideshow runs. The formal part of the meeting starts at 7:30 after which it gets crowded and if you come late you may have to stand in the back.\nWe recommend the paid parking lot which is an underground facility about a hundred feet east of Glassel. (see below)\nEnter the parking lot from Walnut. Walnut is north of the main part of the campus.\nAfter parking toward the south end\, walk to the main stairs where you will find a ticketing machine that takes cash or credit card.\nBuy 3 hours. The machine might take some time to finish the transaction.\nPlace the ticket on your dash board and then go up those stairs and continuing walking south to Hashinger Hall. \nLibrary\nDuring the meeting our extensive club library is open to allow members to browse the books\, videos and DVD’s that are available for their use. \nMembership\nThe club’s Treasurer is available to accept new applications and renewals. More…\nAlso a range of interesting astronomical items (calendars\, decals\, etc.) are available for sale at his table\, of which\, all proceeds go to the club. \nViews: 30
URL:https://www.ocastronomers.org/calendar/oca-general-meeting-dec-18/
LOCATION:Irvine Lecture Hall of the Chapman University\, 336 N Center St\, Orange\, CA\, 92866\, United States
CATEGORIES:General Meetings
ATTACH;FMTTYPE=image/jpeg:https://www.ocastronomers.org/wp-content/uploads/2018/11/RiccardoDeSalvo1.jpg
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