In a study fit for Valentine’s Day, Northwestern University astrophysicists discovered that binary black holes — when formed in crowded clusters of stars — align their spins before merging together. As the black holes orbit one another, each object has its own spin. Previous research indicated these spins should be chaotic and random. However, in
Fulya Kıroğlu (Northwestern University)
In a study fit for Valentine’s Day, Northwestern University astrophysicists discovered that binary black holes — when formed in crowded clusters of stars — align their spins before merging together. As the black holes orbit one another, each object has its own spin. Previous research indicated these spins should be chaotic and random. However, in
Jamie Lombardi / Allegheny College
On November 14, over 300 people packed Northwestern University’s Lutkin Hall to join Professor Stephon Alexander in a celebration of The Jazz of Physics for CIERA’s 15th anniversary public lecture. Over 100 others joined the livestream for an evening that began with a live jazz performance from the Star Eyes Initiative, followed by Prof. Alexander’s public lecture, and concluded with a
By studying nearby galaxy ESO320-G030, a team of international astronomers led by CIERA Postdoctoral Fellow Mark Gorski has discovered extremely dense and powerful rotating, magnetic winds help the galaxy’s central supermassive black hole grow. This image, created by CIERA Professor Aaron Geller, depicts this phenomenon. The process is strikingly similar to the birth of new
M. D. Gorski/Aaron M. Geller
On Friday, May 17, 2024, CIERA welcomed 170 in-person and 25 remote participants to its 3rd annual Astronomy Night Out, an evening dedicated to sharing astronomy with the community through a variety of formats. The keynote public lecture was presented by CIERA-Adler Postdoctoral Fellow Caitlin Witt and entitled, “Tuning into the Cosmic Symphony: Pulsar Timing, the Gravitational Wave
Simulated image of an accretion disk, the violent whirlpool of gas that encircles a supermassive black hole, broken apart into inner and outer rings. According to new high-resolution 3D simulations, spinning black holes twist up the surrounding space-time, ultimately ripping apart the violent whirlpool of gas (or accretion disk) that encircles and feeds them. This
A. Tchekhovskoy/Nick Kaaz/Northwestern University
Simulated image of an accretion disk, the violent whirlpool of gas that encircles a supermassive black hole, broken apart into inner and outer rings. According to new high-resolution 3D simulations, spinning black holes twist up the surrounding space-time, ultimately ripping apart the violent whirlpool of gas (or accretion disk) that encircles and feeds them. This
A. Tchekhovskoy/Nick Kaaz/Northwestern University
Simulated image of an accretion disk, the violent whirlpool of gas that encircles a supermassive black hole, broken apart into inner and outer rings. According to new high-resolution 3D simulations, spinning black holes twist up the surrounding space-time, ultimately ripping apart the violent whirlpool of gas (or accretion disk) that encircles and feeds them. This
A. Tchekhovskoy/Nick Kaaz/Northwestern University
Simulated image of an accretion disk, the violent whirlpool of gas that encircles a supermassive black hole, broken apart into inner and outer rings. According to new high-resolution 3D simulations, spinning black holes twist up the surrounding space-time, ultimately ripping apart the violent whirlpool of gas (or accretion disk) that encircles and feeds them. This
A. Tchekhovskoy/Nick Kaaz/Northwestern University
Last year, Northwestern University researchers uncovered new observational evidence that long gamma-ray bursts (GRBs) can result from the merger of a neutron star with another compact object (either another neutron star or black hole) — a finding that was previously believed to be impossible. Now, another Northwestern team offers a potential explanation for what generated
Ore Gottlieb/Danat Issa/Alexander Tchekhovskoy/CIERA/Northwestern
A 31.5 solar-mass black hole with an 8.38 solar-mass black hole companion viewed in front of its (computer generated) stellar nursery prior to merging. The distant band of the Milky Way can be seen toward the lower-left of the black hole pair. Light is warped nearby the black holes due to their strong gravity. The
Aaron M. Geller / Northwestern CIERA & NUIT-RCS; ESO / S. Brunier
On May 27, 2023, CIERA Research Assistant Professor Aaron Geller and former NSF Graduate Fellow Alex Gurvich were featured on the American Astronomical Society (AAS) Journal Author Series to showcase Firefly, their new browser-based interactive tool for visualizing 3D particle data sets. Geller and Gurvich were interviewed by the AAS’s Frank Timmes. Read the full news story
New 3D computer simulations created by graduate student Fulya Kıroğlu show the eating habits of intermediate-mass black holes, which have yet to be discovered in observations. When a star approaches an intermediate-mass black hole, it initially gets caught in the black hole’s orbit. Every time the star makes a lap, the black hole takes a
Fulya Kiroglu/Northwestern/CIERA
Professor Enectali Figueroa-Feliciano presents an Interdisciplinary Colloquium on December 1, 2022, organized by Northwestern University’s Center for Interdisciplinary Exploration and Research in Astrophysics. Read the full CIERA News story here.
Affectionately referred to as the B.O.A.T. (“brightest of all time”), the powerful explosion occurred approximately 2.4 billion light-years away from Earth, in the direction of the constellation Sagitta. Astrophysicists, including Jillian Rastinejad, first detected the GRB, which was a few hundred seconds in duration, in gamma-ray light on Oct. 9. Read the full Northwestern News
National Science Foundation
A Northwestern University-led team of astronomers has developed the most extensive inventory to date of the galaxies where short gamma-ray bursts (SGRBs) originate. Using several highly sensitive instruments and sophisticated galaxy modeling, the researchers, including Anya Nugent, pinpointed the galactic homes of 84 SGRBs and probed the characteristics of 69 of the identified host galaxies.
W.M. Keck Observatory/Adam Makarenko
When astronomers use radio telescopes to gaze into the night sky, they typically see elliptical-shaped galaxies, with twin jets blasting from either side of their central supermassive black hole. But every once in a while — less than 10% of the time — astronomers might spot something special and rare: An X-shaped radio galaxy, with
Aretaios Lalakos
A still image taken from the 3D simulation of the natural development of an X-shaped jet. The gas (bright red) falls into the black hole, which launches a pair of relativistic jets (light blue). The jets propagate vertically and shock the ambient gas (dark red). The older cavities (dark blue) buoyantly rise at an angle
Aretaios Lalakos
