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CIERA’s 10th Annual Public Lecture, “The NU Astronomy of Stars, Black Holes, and Cosmic Explosions”

Video

CIERA’s 10th Annual Public Lecture, “The NU Astronomy of Stars, Black Holes, and Cosmic Explosions”

CIERA’s 10th annual public lecture was presented October 11, 2018 by director Vicky Kalogera. Kalogera’s talk–a glimpse into the years of fascinating work conducted by CIERA–highlighted key discoveries and what they mean for the future of astronomy. Kalogera discussed the lives of stars, how their influence on the Cosmos has changed in the recent decade,

CIERA / Northwestern

  • Event,
  • Interdisciplinary

NSF Panel for First Cosmic Event seen in Gravitational Waves and Light

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NSF Panel for First Cosmic Event seen in Gravitational Waves and Light

LIGO – Virgo discovery marks first cosmic event observed in both gravitational waves and light. Announcement made at the National Press Club, Washington, DC. Panel with representatives from various telescopes, begins at 51:21 (Please note that Marica Branchesi’s institutional affiliation is incorrectly indicated in the video. The correct affiliation for Dr. Branchesi is Gran Sasso

NSF / LIGO-Virgo

  • Education,
  • Event,
  • Science

Eccentric Black Hole Mergers in Globular Clusters

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Eccentric Black Hole Mergers in Globular Clusters

This simulation shows a binary-binary encounter involving four black holes, which can occur at the cores of dense stellar systems such as gloublar clusters. Such encounters can lead to long-lived “resonating” interactions, through which many temporary binary systems are created. By incorporating a more accurate description of Einstein’s gravity in the equations of motion, the formation

Mike Zevin / Northwestern

  • Education,
  • Science

What is LIGO?

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What is LIGO?

CIERA Director and Northwestern LIGO group lead Vicky Kalogera talks about the different types of waves astronomers have used throughout history to study the Universe. Now, we are in the age of “multi-messenger” astronomy. This means that different types of waves from the same cosmic event can be studied.

LIGO-Virgo / Northwestern

  • Education,
  • Science,
  • Outreach

The Signal

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The Signal

CIERA Associate Director and Northwestern LIGO group member Shane Larson describes how different the 2017 Neutron Star Merger (GW170817) signal is from previous signals.

LIGO-Virgo / Northwestern

  • Education,
  • Science

Science Lecture from Peering into the Cosmic Maelstrom

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Science Lecture from Peering into the Cosmic Maelstrom

Following the October 16, 2017 announcement of the first-ever observation of a binary neutron star inspiral and merger, Northwestern’s astronomy research center, CIERA, held a discussion with the Northwestern scientists behind the discovery. View the lecture by Shane Larson to understand the science behind this amazing astronomical event!

CIERA / Northwestern

  • Education,
  • Event,
  • Science,
  • Outreach

Peering into the Cosmic Maelstrom

Video

Peering into the Cosmic Maelstrom

Following the October 16, 2017 announcement of the first-ever observation of a binary neutron star inspiral and merger, Northwestern’s astronomy research center, CIERA, held a discussion with the Northwestern scientists behind the discovery. View the recording of this event in full, and join Professors Vicky Kalogera, Shane Larson, Raffaella Margutti and Wen-fai Fong as they

CIERA / Northwestern

  • Education,
  • Event,
  • Science,
  • Outreach

Panel Discussion from Peering into the Cosmic Maelstrom

Video

Panel Discussion from Peering into the Cosmic Maelstrom

Following the October 16, 2017 announcement of the first-ever observation of a binary neutron star inspiral and merger, Northwestern’s astronomy research center, CIERA, held a discussion with the Northwestern scientists behind the discovery. View the panel discussion with Professors Vicky Kalogera, Raffaella Margutti, and Wen-fai Fong. Panel moderated by Adler Planetarium President & CEO, Michelle

CIERA / Northwestern

  • Education,
  • Event,
  • Science,
  • Outreach

Masses in the Stellar Graveyard

Interactive

Masses in the Stellar Graveyard

Supported Browsers: Windows: Google Chrome Mac: Google Chrome or Safari

Visualization: LIGO/Frank Elavsky/Northwestern | Non-LIGO Data Sources: Neutron Stars: http://xtreme.as.arizona.edu/NeutronStars/data/pulsar_masses.dat Black Holes: https://stellarcollapse.org/sites/default/files/table.pdf | LIGO-Virgo Data: https://www.gw-openscience.org/events/

  • Education,
  • Science

Final Flight of a Neutron Star Pair

Interactive

Final Flight of a Neutron Star Pair

This interactive allows you to investigate possible past lives of the two neutron stars that merged in an event called GW170817 in the galaxy NGC 4993. The pair of stars—a neutron star and a normal star—orbit quietly, until the normal star undergoes a supernova, spawning a second neutron star and “kicking” the system into an elliptical orbit.

LIGO-Virgo / Aaron Geller / Northwestern

  • Education,
  • Science

How many merger binary black holes are there?

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How many merger binary black holes are there?

How many merger binary black holes are there? There are lots of uncertainties in our understanding of stellar evolution. This plot shows one prediction from the COMPAS population synthesis code for the number of gravitational-wave detections:  there would be about 500 detections per year of observing time once our detectors reach design sensitivity! In Barrett, Gaebel,

Barrett, Gaebel, Neijssel, Vigna-Gómez, Stevenson, Berry, Farr, & Mandel (2018)

Source Galaxies for a Simulated Gravitational-wave Signal

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Source Galaxies for a Simulated Gravitational-wave Signal

This image shows the most probable source galaxies for a simulated gravitational-wave signal from a binary neutron star system. Accurately identifying the source of gravitational waves is extremely important for directing follow-up observations with telescopes, and for measuring the expansion of the Universe. In Del Pozzo, Berry, Ghosh, Haines, Singer & Vecchio (2018; http://adsabs.harvard.edu/abs/2018MNRAS.479..601D) we applied

Del Pozzo, Berry, Ghosh, Haines, Singer & Vecchio (2018)

A Stellar Collision, Ripples In Space-Time, And The Origins Of Gold

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A Stellar Collision, Ripples In Space-Time, And The Origins Of Gold

About 130 million years ago, two neutron stars collided, unleashing an explosion that rippled space-time and splattered the cosmos with a cocktail of heavy metals. Astronomers announced that they spotted the signals from that “kilonova” explosion, both in gravitational waves like the ones LIGO previously detected from merging black holes, and in signals across the

Science Friday

Black Hole Encounter

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Black Hole Encounter

In late 2015, LIGO discovered gravitational waves emitted by two black holes (each with a mass of about 30 times that of our Sun) that spiraled together and merged about 1.5 billion years ago. Astrophysicists are now debating which is the most likely mechanism that can bring two black holes like those observed so close