Van Gogh's Starry Night Spring 2018 ASTR 1200-001 Homepage

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The Hulse-Taylor binary pulsar

Schematic of the Hulse-Taylor binary pulsar
Credit: Shane Larson
Decrease of the periastron of the Hulse-Taylor binary with time

The first detection of gravitational waves: GW150914

Gravitational wave form
Observed gravitational wave form from GW150914

Chirp

The journey of a gravitational wave


The first detection in gravitational waves of the merger of two neutron stars: GW170817

Chirp

A Gamma-Ray Burst (GRB) was detected 1.8 seconds later

A glitch in the LIGO-Livingston data delayed an accurate position on the sky
The glitch in the LIGO-Livingston data

11 hours later, astronomers discover a kilonova in NGC 4993 in the error box of GW170817
Location of GW170817 in NGC 4993

Timeline of observations of GW170817
Timeline of electromagnetic observations of GW170817

The infrared spectrum of the kilonova associated with GW170817 shows two bumps, a signature of very heavy elements.
Observation. Model.
The infrared spectrum of the kilonova associated with GW170817


All the gravitational waveforms


Planned mission Laser Interferometer Space Antenna (LISA) to detect gravitational waves from merging supermassive black holes

Concept for LISA

Black hole and neutron star masses (October 2017)

Black hole and neutron star masses


 Van Gogh's Starry Night Spring 2018 ASTR 1200-001 Homepage

syllabus | timetable | projects | homework | clicker questions | weekly summaries | review | images

Updated 2018 Feb 28