Starquake

The photograph was fading.

It sat propped against the filing cabinet in James Chen's office on the third floor of the Whitmore Astrophysics Building, and it had been fading for six years, the colors bleeding out at the edges the way colors do when you leave a print in direct light and never get around to framing it. The girl in the picture was nine, holding a crawdad she'd caught at Gross Reservoir, grinning with the particular gap toothed ferocity of a child who has just pulled a living thing from the water and is not yet old enough to feel complicated about it. She was fifteen now and would rather die than hold a crawdad. The photo stayed because the girl in it still existed somewhere inside the teenager who texted him in sentence fragments and tolerated his presence every other weekend with the resigned grace of a political prisoner.

He loved her so much it made his chest hurt sometimes. But that's not the point. Not yet.

It was a Tuesday in March. He remembered that later. The last ordinary Tuesday.

James Chen was fifty years old, a solar physicist by training who had drifted sideways into magnetar research the way people drift into anything: by accident, then by stubbornness, then by the slow accretion of sunk costs until one day you look up and realize you've become the guy. The magnetar guy. The one they call when someone on CNN needs a talking head to explain why a dead star the size of Manhattan has a magnetic field that could erase every credit card on Earth from halfway across the galaxy. He'd done that segment twice. Both times they'd cut his explanation of magnetic flux density and kept the bit about credit cards.

His office was not large. It contained the desk, the two monitors, the filing cabinet with the fading photograph, and a coffee mug he'd rinsed twice that morning because someone in the break room had tried to improve the communal coffee with cinnamon or cardamom or some goddamn thing and the result had been like drinking a Yankee Candle.

The point is Pete Mallory, who knocked on his door at 9:47 AM with the look of a golden retriever who has found something dead in the yard and isn't sure if he should be proud or worried.

"Dr. Chen? You got a minute?"

Pete was twenty six, a second year grad student with a red beard and the nervous energy of someone who drank too much coffee and not enough water. He was running a survey, routine stuff, cataloguing compact objects in the galactic plane using archival X-ray data cross referenced with new infrared observations. The kind of work that was important in the way flossing was important: everyone agreed it mattered, nobody wanted to do it, and the results were almost always exactly what you expected.

Almost always.

"What've you got?" James said, not looking up from his screen. He was reviewing a draft paper on coronal mass ejections that was, frankly, boring him to tears.

Pete came in and set his laptop on the desk with the careful reverence of a man presenting evidence in court. On the screen was a spectral analysis: X-ray emission data plotted against infrared magnitudes, with a single data point circled in red, floating well above the expected distribution like a balloon that had escaped a child's fist.

"So I was doing the cross match with the new WISE data," Pete said, talking fast. "And I found this source. It's in Scutum, near the galactic plane, which is why nobody's looked at it, tons of dust, tons of confusion. But the X-ray luminosity is... I mean, look at it."

James looked at it.

The number was 10^35 ergs per second in the soft X-ray band. That was a lot. That was a stupidly large amount of energy for an object that, based on its infrared counterpart, appeared to be a single compact source rather than an extended nebula or an active galactic nucleus.

"Okay," James said, and his voice was calm because voices were supposed to be calm. "What's the position?"

Pete rattled off the coordinates. James pulled up SIMBAD on his other monitor and typed them in. Nothing. No catalogued source within thirty arcseconds.

"It's not in the database," Pete said. "I checked. It's not in McGill, it's not in the ATNF catalogue, it's not anywhere. It's new."

"It's not new," James said, because stars weren't new. "It's uncharted. Different thing."

"Right, right. Uncharted. But Dr. Chen, the spectral shape. Look at the spectral shape."

James had already been looking at the spectral shape. The X-ray spectrum was hard, dominated by photons above 2 keV, with a blackbody temperature around 0.5 keV and a power law tail that screamed non thermal emission. It looked, in other words, exactly like a magnetar. A neutron star with a magnetic field on the order of 10^15 gauss, roughly a quadrillion times stronger than Earth's, strong enough to distort the shapes of atoms into long needles, strong enough to be lethal from a thousand kilometers away, not through radiation, but through raw magnetic force tearing the iron from your blood like the world's worst magic trick.

"Have you done a distance estimate?" James asked.

"That's the thing." Pete swallowed. "I used the neutral hydrogen column density from the X-ray absorption. And I got a parallax measurement from comparing two epochs of infrared data, it's marginal, but it's there. Both methods agree."

"How far?"

"Twenty eight light-years."

James put his coffee down. Then he remembered he'd already poured it out. He put his empty mug down, which was somehow worse.

"Twenty eight," he said.

"Twenty eight point three, plus or minus about two."

"That can't be right."

"I know."

"That would make it the closest neutron star to Earth by a factor of ten. The closest magnetar by a factor of a hundred."

"I know."

"Run it again."

"I ran it four times."

James stared at the screen. Twenty eight light-years. That was nothing. In cosmic terms, that was close enough to borrow a cup of sugar. Alpha Centauri was four light-years away; Vega was twenty five. This thing, this dead, hyperdense, magnetically psychotic remnant of a star that had exploded millions of years ago, was sitting in their backyard, and nobody had noticed because it was buried in the dusty, crowded star fields of the inner Milky Way where a thousand other sources jostled for attention like commuters on a Tokyo subway.

"Pete," James said slowly, "don't talk to anyone about this yet."

"I already emailed Dr. Adeyemi."

Of course he had.

---

They spent the rest of the afternoon going through it. James pulled up every database he could think of, ran the coordinates through HEASARC and the Chandra Source Catalog and the XMM-Newton pipeline, and each time the result was the same: nothing catalogued, nothing known, nothing there. Except that something was very clearly there, blazing in X-rays like a bonfire in an empty field, and nobody had noticed because the field wasn't empty. It was the galactic plane, the most crowded real estate in the sky, and finding a single compact source in that mess was like finding a specific flashlight at a stadium concert.

Pete vibrated with nervous energy. He kept pulling up additional datasets, cross referencing infrared catalogs, muttering to himself. At one point he knocked a pen cup off James's desk and spent thirty seconds apologizing to it.

"Pete."

"Yeah?"

"Go eat something. Something that isn't from a vending machine."

"I'm not hungry."

"You've been eating trail mix and spite since breakfast. Go get food. Come back tomorrow. We'll run the parallax again with the full archival baseline."

Pete left reluctantly, casting a look back at his laptop on James's desk like a parent leaving a child at daycare. James sat with the data for another hour after the building had gone quiet. The janitor's vacuum hummed somewhere on the second floor. A door closed down the hall. The late afternoon light made rectangles on the filing cabinet and then climbed the wall and disappeared.

He opened a browser tab and typed in the distance to Vega. Twenty five light-years. He already knew that. He typed in Altair. Seventeen light-years. Tau Ceti. Twelve. All of them nearby stars, famous stars, stars that appeared in catalogs and textbooks and science fiction novels. None of them were dead. None of them were wound tight with a magnetic field that could strip atoms to their nuclei.

He closed the browser and sat in the half dark office and looked at the photograph of Lily with the crawdad. The fading one. The colors were worse in this light, the greens gone to gray, and he thought about printing a new copy and knew he wouldn't.

He drove home to his apartment on Baseline Road, a two bedroom unit in a complex that smelled faintly of the previous tenant's cat despite two years of occupancy and three professional cleanings. The building had eighteen units, and James knew his neighbors the way modern apartment dwellers know their neighbors: through the sounds they made through the walls. The couple in 3A argued about money on Thursday nights. The man in 3C played jazz trumpet, badly, on weekend mornings. The woman in 2B had a dog that barked at the mailman with a consistency that suggested either deep conviction or very poor memory. James had lived among these people for two years and could have identified maybe three of them in a lineup.

He made pasta because pasta required no decisions. Boil water. Add noodles. Wait. Drain. Add sauce from a jar. These were instructions even a man whose prefrontal cortex was fully occupied with the implications of a nearby magnetar could follow. He ate it standing at the kitchen counter, which was a habit Diane had hated and which he had continued out of something between defiance and laziness.

The kitchen window faced west, toward the mountains, and the last light of the day was doing something complicated with the clouds, turning them the color of old pennies. He stood there with his fork and his mediocre pasta and watched the sky change and thought about all the people who were watching the same sky from all the apartments in all the buildings in all the cities that existed because the ozone layer existed, because a thin shell of triatomic oxygen high in the stratosphere absorbed the radiation that would otherwise sterilize the surface, and about how none of those people knew that the thin shell might be temporary.

He thought about calling Ruth but decided to wait until morning, when he could be measured, professional, the kind of person who brings evidence rather than panic to a conversation.

He did not sleep well. The number sat in his head like a stone in a shoe: twenty eight.