HD 84121
Back on the Albatross, Alwin and one of Magda Simikos's assistants watch the flareup in electronic activity on the alien ship, recorded by sensors on board the Albatross.
There is a moment of fear: is it about to attack?
But the assistant, a computer learning expert named Hannah Tekehu, is certain it is not a threat.
"It's internal only. It's processing data. Nothing anything like Carinan fire control signals."
Since the later 20th century scientists and engineers have known that any computer operations, whether designed to be externally transmitted or not, can be detected through changes in the electromagnetic fields. Military and government systems have all been shielded since then, so these inadvertent signals cannot be detected.*
At some point in their long history, Carinans learned the same thing, and took the same precautions. This is why Hannah knows that normally, no one detects internal Carinan electronic signals. No one, ever.
She starts pushing buttons on the Albatross. "We have to record every bit of this, this is a breakthrough!"
And then adds, to reassure the "away team": "It's definitely not weapons control."
The damaged hulk of Carinan spacecraft is nearer. For a ship that is not supposed to make landings it looks rather good. But that's because generally, ships that are not supposed to make landings look like craters after they try. This landing was exceptionally skillful.
Although... the ship landed cargo hold side up. According to the schematics they saw back on the Albatross, the Carinan ship has a cargo hold, because it is used to something very similar to what the salvagers do to Carinans: return components for study. The cargo hold doors are shut, and secure. Carinan ships are built tough; even though this one is not meant to land, it is meant to travel thousands of light years in space, and endure space battles with powerful weapons. It is not weak.
Even so, crash landing is rough. The cargo handling arms that would have served the cargo hold are burned away. And on the underside of the ship, the bulk of the vessel's firepower has probably been scraped down to dust.
"You know this thing doesn't have a crew, right?" Astrid says. "It's not going to have air locks or entry ports. We might have to cut or blow something to open it up. Everyone okay with that?"
*This is true. In the West this is called Tempest Shielding. Spooky spy stuff.