News

Baselines of the GMVA+ALMA array for Sgr A* observations

Lifting the veil on the black hole at the heart of our Galaxy: Results from GMVA+ALMA observations of Sgr A*

January 21, 2019

Including the powerful ALMA into an array of telescopes for the first time, astronomers have found that the emission from the supermassive black hole Sagittarius A* (Sgr A*) at the center of our Galaxy comes from a smaller region than previously thought. This may indicate that a radio jet from Sgr A* is pointed almost toward us. The paper, led by the Nijmegen PhD student Sara Issaoun, is published in The...

Read more about Lifting the veil on the black hole at the heart of our Galaxy: Results from GMVA+ALMA observations of Sgr A*
Black hole simulations in virtual reality.

Flying past a black hole in a simulator: Jordy Davelaar and colleagues observe supermassive black holes in virtual reality

November 20, 2018

At the centre of our own galaxy there is a black hole, called Sagittarius A*. In anticipation of the first actual photograph of a black hole, an international project that also involves astronomers of Radboud University, Jordy Davelaar and colleagues have built a virtual reality (VR) simulation of the phenomenon. The VR simulation was published in the journal Computation Astrophysics and Cosmology on November 19th.

You can find the simulation on...

Read more about Flying past a black hole in a simulator: Jordy Davelaar and colleagues observe supermassive black holes in virtual reality
Principal Component Analysis illustration, adapted from Medeiros et al. 2018.

Planning for images of a black hole: New image analysis tools presented in an article in AAS Nova

September 27, 2018
The EHT is closer than ever to its goal, as the project continues to increase its resolving power and sensitivity as more telescopes join the system. Another important aspect of this project exists, however: the ability to analyze and characterize the images it produces in a meaningful way. Recently, a team of scientists led by Lia Medeiros (University of Arizona, University of California Santa Barbara) has demonstrated that a novel approach — principal component analysis — may be a useful tool in this process. Learn more about it in... Read more about Planning for images of a black hole: New image analysis tools presented in an article in AAS Nova
Artistic Impression of a a black hole. Credit: World Science Festival

World Science Festival: shedding new light on the current state of the art and the future of black hole research

August 28, 2018
At World Science Festival in New York, Andrea Ghez of UCLA, Vicky Kalogera of Northwestern University, and Shep Doeleman and Cumrun Vafa of Harvard University, shed new light on the current state of the art and the future of black hole research in a panel hosted by physicist and author Brian Greene: ... Read more about World Science Festival: shedding new light on the current state of the art and the future of black hole research