[phas-dept] FW: [Faculty-talk] [Announce] today's news from LIGO

[Carlos Bertulani]

>Hello All,
>
>I got the email below from Nick Suntzeff. It is related to what Will Newton mentioned yesterday.
>
>Carlos
>
>
>-----Original Message-----
>From: <faculty-talk-bounces at physics.tamu.edu> on behalf of nsuntzeff
>Date: Monday, October 16, 2017 at 3:41 PM
>To: announce
>Subject: [Faculty-talk] [Announce] today's news from LIGO
>
>>Dear All,
>>
>>Many of you have heard about the announcement today of the detection of the inspiral merging of two neutron stars that was detected by LIGO on 17 Aug. The GW detection was followed two seconds later by a gamma ray detection from the Fermi satellite,
>> which classified it into one of the two broad categories of gamma ray bursts - in this case the “short-hard” group. The event was localized to about 30 sq-deg by LIGO/Virgo. An optical counterpart was discovered about 12 hours later in a reasonably well studied
>> and nearby galaxy NGC4993.
>>
>>Here is the time line
>>
>>Here is a fact sheet about the event from LIGO
>>
>>https://urldefense.proofpoint.com/v2/url?u=https-3A__dcc.ligo.org_public_0146_G1702000_006_GW170817-5FFactsheet.pdf&d=DwIGaQ&c=oqyuZuih6ykib6aKiBq22_bich4AVfYGoLertJN0bEc&r=hjwEO_XYlnwAQWUGeaCrW47w4mK-Al28-BKyRvaivBs&m=SUfVRlZsNAIs54SHkjsHD6gx5D4kbV9Zb4bdmSMz4F0&s=x9GnWebhVgsnvI7tIxHaQpW1UkDS5XKHQ1GPBV8pz5M&e= 
>>
>>Among the interesting facts is that (1) the speed of gravity has been directly measured. Previously the speed had been inferred from the work of Taylor and Hulst from binary pulsar timings under the assumption of GR. A more controversial measurement
>> of the speed of gravity was later made by timing a quasar as it passed by Jupiter. (2) The final state of the merger could be a black hole, but it is not absolutely certain. (3) Spectra taken of the event in the optical lend support to the production of the
>> heaviest natural elements in the periodic table.
>>
>>Texas A&M astronomers along with 3,500 other scientists (!) were involved in the followup science. One of the first detections of the optical source was made by the Dark Energy survey team, with Jen Marshall at the telescope in Chile taking the
>> discovery data. Her story can be read at:
>>
>>https://urldefense.proofpoint.com/v2/url?u=http-3A__www.science.tamu.edu_news_story.php-3Fstory-5FID-3D1868-23.WeUYEEx5BE4&d=DwIGaQ&c=oqyuZuih6ykib6aKiBq22_bich4AVfYGoLertJN0bEc&r=hjwEO_XYlnwAQWUGeaCrW47w4mK-Al28-BKyRvaivBs&m=SUfVRlZsNAIs54SHkjsHD6gx5D4kbV9Zb4bdmSMz4F0&s=Sxnj9Wue7grFFLARvE2C9yoPoq3xb-X5BaG_S54zUa0&e= 
>>
>>A list of all the TAMU collaborations involved in the discovery is given at:
>>
>>https://urldefense.proofpoint.com/v2/url?u=http-3A__www.science.tamu.edu_news_story.php-3Fstory-5FID-3D1870-23.WeUYNEx5BE4&d=DwIGaQ&c=oqyuZuih6ykib6aKiBq22_bich4AVfYGoLertJN0bEc&r=hjwEO_XYlnwAQWUGeaCrW47w4mK-Al28-BKyRvaivBs&m=SUfVRlZsNAIs54SHkjsHD6gx5D4kbV9Zb4bdmSMz4F0&s=A7xYXIEdieXbZ560CR1qUY3BUYeBiJeQdtkujfZ1FNE&e= 
>>
>>cheers nick
>>
>>
>>
>>