Gabriel Perez (IAC)
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Depiction of a neutron star blowing warm and cold winds.
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Nationalgeographic.co.id – Using the most powerful telescopes on Earth and in outer space, a team of astronomers has for the first time discovered bursts of hot, warm, and cold winds from neutron star while the star consumes matter from the nearest star. The discovery provides new insights into the behavior of some of the most extreme objects in the universe.
System binary star low mass X-rays (LMXBs / Low-mass X-ray binaries) are systems containing neutron stars or black holes. They are propelled by material taken from their neighboring star, a process known as accretion. Most of the accretion occurred during intense eruptions where the system brightened dramatically. At the same time, some of the swirling matter is pushed back into space in the form of disc winds and jets.
The most common signs of material escaping from astronomical objects are associated with “warm” gases. Nonetheless, only winds of “hot” or “cold” gases have been observed in binary X-rays for a while, until now.
In this new study, a team of researchers from eleven countries, led by the University of Southampton, have studied the recent eruption of a binary X-ray known as Swift J1858. They used a combination of telescopes, including NASA’s Hubble Space Telescope (HST), the European Space Agency’s XMM-Newton satellite, the European Southern Observatory Organization’s Very Large Telescope (VLT), as well as the Spanish Gran Telescopio Canarias (GTC).
The results, have been published in the journal Nature on March 2, 2022 with the title “A persistent ultraviolet outflow from an accreting neutron star binary transient”. This study shows signs of persistently warm winds at ultraviolet wavelengths occurring at the same time as signs of cold winds at optical wavelengths. This is the first time winds from such a system have been seen in various bands of the electromagnetic spectrum.
“Eruptions like this are rare, and each one is unique. Usually they are heavily covered by interstellar dust, which makes observations very difficult. Swift J1858 is special, because even though it is located on the other side of our galaxy, the obscuration is small enough to allow multi-wavelength studies. full,” said Dr. Noel Castro Segura, lead author of the study from the University of Southampton, as reported Tech Explorist.
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Miami Standard News Staff
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Black holes and neutron stars are some of the most extreme objects in the Universe, tearing apart their neighboring stars.
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