Welcome Guest ( Log In | Register )

2 Pages V  < 1 2  
Reply to this topicStart new topic
LIGO, High Gear Science Run
post Feb 11 2016, 07:08 PM
Post #16

Junior Member

Group: Members
Posts: 92
Joined: 22-May 08
From: Loughborough
Member No.: 4121

QUOTE (hendric @ Feb 11 2016, 07:36 PM) *
Nice article about the post-doc who was monitoring when the event occurred:


Great stuff. "He reached only one of the facilities—“Livingston, I think,” he says—but was told all was normal".
If only his words were "Livingston, I presume" smile.gif
Go to the top of the page
+Quote Post
post Feb 12 2016, 08:22 PM
Post #17


Group: Members
Posts: 706
Joined: 13-June 04
Member No.: 82

An interesting possible second binary black hole merger, from GW150914: First results from the search for binary black hole coalescence with Advanced LIGO

The second most significant candidate event in the observation period (referred to as LVT151012) was reported on October 12, 2015 at 09:54:43 UTC with a combined matched filter SNR of 9:6. The search reported a false alarm rate of 1 per 2.3 years and a corresponding false alarm probability of 0.02 for this candidate event. Detector characterization studies have not identified an instrumental or environmental artifact as causing this candidate event. However, its false alarm probability is not sufficiently low to confidently claim this candidate event as a signal. Detailed waveform analysis of this candidate event indicates that it is also a binary black hole merger with source frame masses 23 M Sun and 13 MSun , if it is of astrophysical origin.

Attached thumbnail(s)
Attached Image
Go to the top of the page
+Quote Post
post Jun 20 2016, 03:48 PM
Post #18


Group: Members
Posts: 482
Joined: 12-February 12
Member No.: 6336

Now that a second black hole merger have been detected with high confidence. The idea that such events might be common have surfaced and made some think in radically new lines to explain how such events might happen quite often.
One hypothesis is that black holes and stars in the central part of globular clusters might collect in a 'Mosh pit' - I have a hunch that one of the team must be a metalhead for that expression to be used - indeed is a good term to describe the chaotic conditions and collisions that can occur in such a volume of space where stars and black holes are comparably tightly packed together.
Northwestern univ summary, video and link to the actual paper.
Go to the top of the page
+Quote Post
post Today, 07:19 AM
Post #19


Group: Members
Posts: 5
Joined: 8-September 15
Member No.: 7773

First merger of neutron stars detected and observed both with gravity waves and electromagnetical ones.

ligo press release
Go to the top of the page
+Quote Post

2 Pages V  < 1 2
Reply to this topicStart new topic


RSS Lo-Fi Version Time is now: 17th October 2017 - 03:22 PM
Please read the Forum Rules and Guidelines before posting.

Images posted on UnmannedSpaceflight.com may be copyrighted. Do not reproduce without permission. Read here for further information on space images and copyright.

Opinions expressed on UnmannedSpaceflight.com are those of the individual posters and do not necessarily reflect the opinions of UnmannedSpaceflight.com or The Planetary Society. The all-volunteer UnmannedSpaceflight.com moderation team is wholly independent of The Planetary Society. The Planetary Society has no influence over decisions made by the UnmannedSpaceflight.com moderators.
Unmannedspaceflight.com is a project of the Planetary Society and is funded by donations from visitors and members. Help keep this forum up and running by contributing here.