Wednesday 26 March 2025
A team of astronomers has uncovered a hidden component in one of the brightest objects in the universe, shedding new light on the workings of these enigmatic sources of energy.
The object in question is 3C 273, a quasar located about 2.4 billion light-years away from us. Quasars are incredibly luminous galaxies that are thought to be powered by supermassive black holes at their centers. They are among the brightest objects in the universe, outshining entire galaxies.
The team used data from NASA’s XMM-Newton and NuSTAR space telescopes to study 3C 273 during five periods between 2015 and 2019. By analyzing these observations, they discovered a faint Seyfert-like component lurking beneath the surface of the quasar’s radiation.
Seyfert galaxies are types of active galactic nuclei (AGN) that are powered by supermassive black holes similar to those found in quasars. However, Seyfert galaxies are much closer to us and emit less energy than quasars. The presence of a Seyfert-like component in 3C 273 suggests that the quasar may be transitioning from a state of high activity to one of lower activity.
The team also noticed an unusual spectral feature in the X-ray data, which they attributed to the reflection of radiation off a dense and cold material surrounding the black hole. This material is thought to be the remains of a star that has been torn apart by the strong gravity of the black hole.
The discovery of this Seyfert-like component and the presence of reflected radiation provide new insights into the complex processes occurring in 3C 273 and other quasars. It also highlights the importance of continued observations of these enigmatic objects to better understand their behavior and evolution over time.
One of the key findings is that the quasar’s jet, which is a narrow beam of energetic particles that extends far beyond the galaxy, seems to be connected to the Seyfert-like component. This suggests that the jet may play a crucial role in shaping the quasar’s radiation and potentially even influencing its activity levels.
The study also highlights the importance of multi-wavelength observations, combining data from different telescopes and instruments, to gain a more complete understanding of these complex objects. By analyzing data from X-rays to gamma rays, scientists can piece together a detailed picture of what is happening in quasars like 3C 273.
Cite this article: “Uncovering Hidden Secrets of Quasar 3C 273”, The Science Archive, 2025.
Quasar, Black Hole, Seyfert Galaxy, Agn, Xmm-Newton, Nustar, Space Telescope, Quasar Radiation, Jet, Gamma Rays
