This image shows the glow from a kilonova caused by the merger of two neutron stars. The kilonova, whose peak brightness reaches up to 10,000 times that of a classical nova, appears as a bright spot (indicated by the arrow) to the upper left of the host galaxy. The merger of the neutron stars is
This animation shows the increasing sample of gravitational wave sources, starting before LIGO-Virgo-KAGRA went online (with only electromagnetic, EM, sources) and then moving through the three main data releases that are now available (GTWC-1, GWTC-2.1, and GWTC-3). Watch as the sample of merging black holes and neutron stars has dramatically increased over the past few
Visualization: LIGO-Virgo-KAGRA / Aaron Geller / Northwestern
On October 28, 2020 CIERA’s Shane Larson presented this public lecture titled A Storm of Stars: A Living History of the Milky Way in a virtual Zoom webinar format to an audience of nearly 450 viewers. Larson discussed how we came to understand the Milky Way, our home galaxy, and how our ideas about the
Gabriel Casabona, a theoretical astrophysicist who specializes in binary neutron star mergers, gives an interview with Suzette Lyn.
Suzette Lyn
Dr. Josiah Schwab presents “1 + 1 = 1: Single White Dwarfs from Double White Dwarf Mergers.” Dr. Schwab is a postdoctoral scholar at UC Santa Cruz. This seminar is part of the Astrophysics Seminar series at CIERA.
CIERA
Dr. Marla Geha presents “The Saga Survey: Exploring Satellite Galaxies Around the Milky Way Analogs.” Dr. Geha is a professor of astronomy and the Director of Telescope Resources at Yale University. This seminar is part of the Astrophysics Seminar series at CIERA.
CIERA
This movie demonstrates the propagation of a relativistic jet following the Neutron star merger GW170817. Credit: Ore Gottlieb
This video was created by CIERA’s Associate Director, Shane Larson, for Physics & Astronomy graduate student recruitment in the Spring of 2020, at the beginning of the COVID-19 “lockdown” period.
Artist’s interpretation of the calcium-rich supernova 2019ehk. Shown in orange is the calcium-rich material created in the explosion. Purple coloring represents gas shedded by the star right before the explosion, which then produced bright X-ray emission when the material collided with the supernova shockwave. Learn more: Calcium-rich supernova examined with X-rays for first time
Aaron M. Geller, Northwestern University
The afterglow of GRB181123B, captured by the Gemini North telescope. Learn more: Short gamma ray burst leaves most-distant optical afterglow ever detected
International Gemini Observatory/NOIRLab/NSF/AURA/K. Paterson & W. Fong (Northwestern University).
Zwicky Transient Facility composite image of SN2019yvq (blue dot in the center of the image) in the host galaxy NGC 4441 (large yellow galaxy in the center of the image), which is nearly 140 million light-years away from Earth. SN 2019yvq exhibited a rarely observed ultraviolet flash in the days after the star exploded. Learn
ZTF/A. A. Miller (Northwestern University) and D. Goldstein (Caltech)
A supernova at least twice as bright and energetic, and likely much more massive than any yet recorded has been identified by an international team of astronomers. Continue to the full article at University of Birmingham News. View the Nature Astronomy article, “An extremely energetic supernova from a very massive star in a dense medium”
Aaron M. Geller – Northwestern IT
A direct image of CSS161010’s host galaxy taken with W. M. Keck Observatory’s DEIMOS instrument, shown in the bottom square and magnified in the larger top square. Observations show it is a dwarf galaxy located 500,000,000 light years away in the direction of the constellation Eridanus. Learn more: Astrophysicists Capture New Class of Transient Objects
Giacomo Terreran, CIERA/Northwestern University
A detailed simulation of a black hole’s accretion disc created by a global team of computational astrophysicists – including CIERA’s Prof. Sasha Tchekhovskoy – solved a decades-old mystery. The accretion disc is matter that orbits and then falls into a black hole. Researchers discovered how the disc aligns with the hole’s equator, details vital to
Episode 8 of the documentary series “LIGO: The Discovery that Shook the World” features CIERA Director Vicky Kalogera discussing the science of future LIGO instruments (the detectors that observe gravitational waves). All 8 episodes can be found on YouTube.
The Advanced LIGO Documentary Project was a collaboration among Caltech, MIT, the LIGO Laboratory and director Les Guthman that made the feature documentary, “LIGO,” and the eight-part video series, THE DISCOVERY THAT SHOOK THE WORLD, about LIGO’s major gravitational wave discoveries 2015-2017 and the birth of the new era of gravitational wave astronomy.
The Universe is vast beyond anything humans can easily comprehend, and it is easy to become overwhelmed by the immensity, disheartened by how insignificant we seem. But in the vastness there is a glimmer of truth that we should hold onto and use to guide us: in all the vastness we are, so far as
TEDxGVSU
This lecture was presented by award-winning author and Yale professor Dr. Priyamvada Natarajan at Cahn Auditorium on October 24, 2019. Natarajan discussed how mapping over time encodes radical new scientific ideas. She walked through the history of the acceptance of new astronomical ideas, and talked about the status of several current transformative (and deeply contested)
Left: NASA Spitzer image showing the portion of the Rho Oph dark cloud observed with HAWC+ instrument….
NASA/JPL-Caltech/Harvard-Smithsonian CfA. SOFIA/ HAWC+/ Northwestern University /F. Pereira Santos
