Exhibiting a higher surface temperature and slower decrease in the rate of x-rays emitted than previous neutron stars detected during the human journey to the beginning of space and time
Space news (August 15, 2015) –
Space scientists working with NASA’s Chandra X-ray Observatory and the European Space Agency’s XMM-Newton Observatory in 2013 discovered a magnetar dangerously close to the supermassive black hole (Sagittarius A) thought to exist at the center of the Milky Way. At a distance of around 0.3 light-years or 2 trillion miles from the 4-million-solar mass black hole, the neutron star (called SGR 1745-2900) detected is likely orbiting slowly into the gravitational pool of the supermassive black hole. One day, far in the future, the two will merge during an event likely spectacular and unfathomable to both the scientist and layperson.
For the last two years, NASA and European space agency scientists have been monitoring SGR 1745-2900, and have discovered its acting unlike any magnetar discovered during the human journey to the beginning of space and time.
The rate of X-rays emitted by the magnetar is decreasing slower than other neutron stars viewed and its surface temperature is higher. Facts that are making astrophysicists rethink their theories on neutron stars and develop new ideas to explain how this happens.
Could the close proximity of the supermassive black hole Sagittarius A be the cause?
Considering the extreme distance between the supermassive black hole and magnetar, astrophysicists don’t think this could be the reason for the slower decrease in X-ray emissions and higher surface temperature of SGR 1745-2900. At the distance of 2 trillion miles, they believe the magnetar is too far away for the gravity and magnetic fields of the two to interact enough for this to occur.
The current model developed by astrophysicists to explain the unexpected slower rate of X-ray emissions and higher surface temperature of SGR 1745-2900 involves “starquakes”. Seismic waves astrophysicists think are more energetic than a 23rd magnitude earthquake on Earth, scientists found the starquake model doesn’t explain the slow decrease in X-ray brightness and the higher surface temperature detected.
To explain the new data obtained through study using the Chandra X-ray Observatory NASA astrophysicists have suggested a new model. The bombardment of the surface of SGR 1745-2900 by charged particles trapped within magnetic fields above its surface could add enough heat to account for the higher surface temperature and account for the slower decrease in X-ray emissions.
NASA scientists will now continue their study of magnetar SGR 1745-2900 as it orbits Sagittarius A looking for clues to verify their new model. Study and understanding of this and other magnetars will provide clues to the events that occurred during the earliest moments of the universe. Events that can tell us more about the universe we reside in and the true nature of spacetime.
You can learn more about supermassive black holes here.
Read and learn more about magnetars here.
You can read about and follow NASA’s mission to the stars here.
Learn more about the human search for Earth 2.0.
Learn about and take part in the search for near-Earth objects space scientists indicate could be a problem in the future.