Astronomers discovered something unique using SOFIA, the Stratospheric Observatory for Infrared Astronomy. They found a new type of stellar outburst that had never been seen before in the type of system under study. Through some clever scientific detective work, the astronomers were able to identify
Artist’s rendition of a cataclysmic variable in which a white dwarf is accreting material from its nearby Sun-like companion . The material forms a disk around the white dwarf until an instability causes an explosion and a bright outburst of light, known as a nova. Credit: NASA/SOFIA/L. Proudfit, the Stratospheric Observatory for Infrared Astronomy. They found a new type of stellar outburst that had never been seen before in the type of system under study.
On days 88 and 89 after V1047 Cen began to brighten again, a team of scientists led by Dr. Elias Aydi, an astronomer at, used the FORCAST camera aboard SOFIA to analyze the system. They initially thought the re-brightening was indicative of a dwarf nova, but, unlike dwarf novae, this one kept going for quite a while.
Understanding the temperature of the gas around the system is typically an important clue as to what is going on. In this case, the investigatorsto reveal the temperature, which showed heating as a result of the outburst, helping to prove it was more than a typical dwarf nova. Supplementing the SOFIA data, the group of astronomers also conducted observations using nearly a dozen other instruments, covering much of V1047 Cen’s 400-day event. Taken together, the data started to make more sense, and they realized they had come across something unique – a new type of stellar outburst that had never been seen before in this type of system. The discovery uncovers new scenarios that can take place in these types of cataclysmic variables.
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