Interstellar Object 3I/ATLAS Exhibits Unusual Radio Signals and Pulsing Jets

Astronomers have observed interstellar object 3I/ATLAS emitting narrow-band radio signals at 1665 and 1667 MHz, frequencies associated with hydroxyl (OH) molecules. These signals were detected during periods of peak aerodynamic stress, a phenomenon uncommon in natural comets. Additionally, 3I/ATLAS displays pulsing jet emissions every 16.16 hours, a pattern likened to a "heartbeat" by Harvard astrophysicist Avi Loeb.

The jets, with an outflow velocity of 440 meters per second, extend approximately 25,600 kilometers before the next pulse, indicating timed releases rather than random eruptions. The stability and directionality of these jets suggest an internal outflow mechanism operating independently of solar influences.

The concurrence of narrow-band radio signals and periodic jet pulsations raises questions about a potential link between the two phenomena. One hypothesis is that the jets may modulate the surrounding environment, affecting the distribution of OH-rich materials and resulting in the observed radio signals.

As 3I/ATLAS approaches its closest pass on December 19, astronomers plan to monitor the timing between the jet pulses and any recurring radio signals to gain further insights into the object's behavior.