Relativistic jets are powerful jets of radiation and particles travelling at close to the speed of light. They are often associated with highly dense matter, including supermassive black holes and neutron stars. These powerful jets could be the sources of cosmic rays, the fastest travelling particles in the Universe, and it is not clear what produces them. The EU-funded JETSET project plans to investigate the origin and propagation of relativistic jets associated with mergers of two super-dense neutron stars and determine if the same mechanisms apply to the largest supermassive black holes.
Latest News
- The LIGO-Virgo-Kagra collaboration starts the O4 run of gravitational-wave observations
On May 24, 2023, the four gravitational-wave detectors in the United-States, Italy and Japan entered their science mode, out to catch gravitational waves from explosive astronomical phenomena. This new observing run is the fourth of the global network of gravitational-wave… - Microphysical plasma relations from special-relativistic turbulence
A recent paper from a collaboration between the Relativistic Astrophysics Group at Goethe University Frankfurt and the Department of Physics at the University of Calabria in Italy studies the microphysical, and kinetic properties of astrophysical plasmas with particle-in-cell simulations.In modern… - Congratulations to Dr. Cruz-Osorio winning the 2022 EHT Early Career Award!
JETSET member Dr. Alejandro Cruz-Osorio was selected as one of the recipients of the 2022 Early Career Award by the Event Horizon Telescope Collaboration. The entire JETSET team is very proud of Alejandro and joins in warmly congratulating him as… - Cosmic chocolate pralines: general neutron star structure revealed
Click here for more details: https://aktuelles.uni-frankfurt.de/englisch/cosmic-chocolate-pralines-general-neutron-star-structure-revealed/ - Quark matter formation in binary neutron-star mergers with input from string theory
In a recent paper researchers from the Relativistic Astrophysics group at Goethe University Frankfurt (Luciano Rezzolla, Samuel Tootle, Christian Ecker, Konrad Topolski) and the Asia Pacific Center for Theoretical Physics in Korea (Tuna Demircik, Matti Järvinen) study the formation of… - Happy the first Birthday to JETSET!
October 2022 marks the first anniversary of our beloved project JETSET. On such a historic occasion, it’s my honour to look back on our activities in the past year and come out with a summary of the fantastic work we… - JETSET PI Prof. Rezzolla honored once again
It is a pleasure to congratulate Prof. Rezzolla once again for his two latest achievements, after his election to the International Society for General Relativity and Gravitation earlier this year. During the Summer, Rezzolla was awarded a Laureatus professorship by… - Gamma-ray bursts on the menu at the EXPLORE Summer School
What better way to start the academic year than a Summer school on astrophysics at Goethe University? During the last week of August, thirty graduate students from Goethe University and York University in Toronto gathered on the Riedberg campus in… - Congratulations to Prof. Rezzolla for his election to the ISGRG!
The JETSET project warmly congratulates Prof. Rezzolla for his election to the International Society on General Relativity and Gravitation (ISGRG). The ISGRG is an international learned society founded in 1971 with the purpose to “promote the study of general relativity… - Congratulations to Dr. Cruz-Osorio, laureate of the 2022 Frankfurt Physics Prize!
JETSET member Dr. Alejandro Cruz-Osorio was awarded the 2022 Frankfurt Physics Prize. The entire JETSET team is very proud of Alejandro and joins in warmly congratulating him as a remarkable scientist and a friendly collaborator. Every year, the physics department… - First EHT Imaging Results of the Galactic Center Supermassive Black Hole Sgr A*
For a visual understanding of the advanced techniques used to study the supermassive black hole SgrA*, see our Media page. Image reconstruction In 2022, the Event Horizon Telescope (EHT) finally resolved the horizon-scale emission of the supermassive black hole Sagittarius… - Impact of extreme spins and high mass-ratios on the observables of high-mass binary neutron stars
While the total mass of a binary neutron star (BNS) system can be reasonably well constrained based on the gravitational-wave (GW) signal measured by ground-based interferometers such as LIGO and Virgo, the same does not hold for the mass ratio… - Magnetic reconnection and plasmoid formation in three-dimensional accretion flows around black holes
Magnetic reconnection is a sudden reconfiguration of the magnetic field lines that releases energy in the medium around the magnetic field. Magnetic reconnection is thought to be one of the main mechanisms fueling energy from the magnetic field into the… - JETSET welcomes Calea, a brand new high-performance computing cluster
To extend the computational capabilities available to JETSET’s ambitious research goals, the Relativistic Astrophysics group has acquired a brand new computing cluster. The cluster is exclusively dedicated to our research group and was customized to suit our peculiar needs for… - Distinguishing gravitational and emission physics in black-hole imaging
Imaging a supermassive black hole and extracting physical information requires good knowledge of both the gravitational and the astrophysical conditions near the black hole. When the geometrical properties of the black hole are well understood, extracting information on the emission… - A full spectral and morphological understanding of the M87 jet
M87 has been the target of numerous astronomical observations across the electromagnetic spectrum, and very long baseline interferometry has resolved an edge-brightened jet. However, the origin and formation of its jets remain unclear. In our current understanding, black holes (BH)… - A new model for flares in gamma-ray bursts
In this paper, we develop a model to explain the flaring activity in the X-ray afterglows of gamma-ray bursts (GRBs) within the framework of slightly misaligned observers to structured jets. We suggest that flares could be the manifestation of prompt… - Merry Christmas from JETSET!
All the JETSET team joins in wishing you a Merry Christmas and a Happy New Year!
