New paper explains approaches that could lead to new insights about dark matter

Illustration of dark matter falling into a neutron star, forming a black hole and radiating out (Courtesy of NASA) Illustration of dark matter falling into a neutron star, forming a black hole and radiating out (Courtesy of NASA)

A new paper, co-authored by University of Notre Dame astrophysicist Joseph Bramante, discusses how detecting imploding pulsars may lead to insights about the properties of dark matter. The paper, “Detecting Dark Matter with Imploding Pulsars in the Galactic Center,” was recently published in Bodily Evaluation Letters, the flagship journal for the American Bodily Society.

Pulsars, or pulsating stars, are rotating neutron stars that emit pulses of light noticeable to astronomers on Earth. Pulsars are developed from the collapsing cores of supermassive stars that have exploded into supernovae. These supermassive stars, 10 to forty times the mass of the sun, have been discovered at the center of the galaxy, leading astronomers to predict a specific amount of pulsars need to also reside there, but that predicted quantity of pulsars has not nevertheless been observed.

“In 2013, the initial pulsar at the galactic center was detected, and this observation has deepened the mystery of these stellar objects,” explained Bramante, a postdoctoral associate in the lab of Christopher Kolda. “Prior to this detection, it was imagined that pulsars at the galactic center may well simply be shielded from observation by dense material in the center of the galaxy.”

In the paper, Bramante and his colleague at the University of Chicago, Tim Linden, examine how dark matter could make clear the absence of pulsars in the galactic center. Dark matter, which can make up approximately 25 percent of the matter in the universe, is a really dense kind of matter that does not emit a considerable amount of light. A specific type of dark matter could ruin pulsars at the galactic center by falling into the pulsars and forming black holes that swallow them.

“Observations of pulsars imploding into black holes could provide essential clues to the properties of dark matter, especially indicating it is asymmetric, just like noticeable matter,” mentioned Bramante.

The paper also explains how the researchers showed that the presently unknown mass and quantum couplings of dark matter could be discovered by determining the age at which a pulsar is swallowed by a dark matter black hole. 1 predictor of this pulsar-collapsing dark matter is a highest age for pulsars, which will get larger the further away from the galactic center the pulsars are since there is much less dark matter away from the center.

The subsequent measures in this function for Bramante and his collaborators contains constructing and testing a model of dark matter to guarantee the model meets all other cosmological and astrophysical dark matter observations.

Get in touch with: Joseph Bramante, Joseph.Bramante.two@nd.edu

Leave a Reply