Category Astronomy/Space

30-year mystery of dissonance in the ‘ringing’ of black holes explained

black hole
Credit: Pixabay/CC0 Public Domain

A scientist from Tokyo Metropolitan University has solved the longstanding problem of a “dissonance” in gravitational waves emitted by a black hole.

Using high precision computing and a new theoretical physics framework, it was discovered that it was caused by a resonance between a pair of distinctive “modes” i.e. different ways in which a black hole can “ring.” The phenomenon offers new insights into the nascent field of black hole spectroscopy.

The research is published in the journal Physical Review Letters.

Black holes are astrophysical objects so dense that even light cannot escape their gravitational pull...

Read More

The heart of world’s largest solar telescope begins to beat

The world’s largest solar telescope, the U.S. National Science Foundation (NSF) Daniel K. Inouye Solar Telescope in Hawaii, has reached an important milestone. After almost 15 years of preparation, the German instrument for the Inouye Solar Telescope, the Visible Tunable Filtergraph (VTF), has now taken its first images. The imaging spectro-polarimeter was developed and built at the Institute for Solar Physics (KIS) in Freiburg (Germany). The Max Planck Institute for Solar System Research (MPS) in Göttingen (Germany) is a partner in the project.

The data published now were obtained during the technical commissioning of the instrument...

Read More

Disk discovery changes views on star and planet formation

The combination of theoretical models and empirical data provides a new perspective for understanding the complex interactions between young stars and their environments. Credit: Paolo Padoan, Liubin Pan, Veli-Matti Pelkonen, Troels Haugbølle and Ake Nordlund
The combination of theoretical models and empirical data provides a new perspective for understanding the complex interactions between young stars and their environments. Credit: Paolo Padoan, Liubin Pan, Veli-Matti Pelkonen, Troels Haugbølle and Ake Nordlund

A study led by Paolo Padoan, ICREA research professor at the Institute of Cosmos Sciences of the University of Barcelona (ICCUB), is challenging the understanding of planetary disk formation around young stars.

The paper, published in Nature Astronomy, reveals that the environment plays a crucial role in determining the size and lifetime of these planetary disks, which are the sites of planet formation.

When a star forms, it is surrounded by a spinning disk of gas and dust...

Read More

Astronomers Find Far-flung “Super Earths” Are Not Farfetched

This artist's concept illustrates the results of a new study that measured the masses of many planets relative to the stars that host them
Caption: This artist’s concept illustrates the results of a new study that measured the masses of many planets relative to the stars that host them, leading to new information about populations of planets in the direction of the bulge of the Milky Way. This study, published in the journal Science, shows that super-Earths are common and places them in context with gas giant planets.

Credit: Westlake University

A new study shows that planets bigger than Earth and smaller than Neptune are common outside the Solar System.

An international team including astronomers from the Center for Astrophysics | Harvard & Smithsonian (CfA) has announced the discovery of a planet about twice the size of Earth orbiting its star farther out than Saturn is to the sun.

These results are another examp...

Read More