34 citations · 206 across the 42 of their papers we have counts for
9 papers · 1 filter
The New Astronomical Frontier of Interstellar Objects
Amir Siraj, Abraham Loeb
The upcoming commencement of the Vera C. Rubin Observatory's Legacy Survey of Space of Time (LSST) will greatly enhance the discovery rate of interstellar objects (ISOs). `Oumuamua…
Preliminary Evidence That Protoplanetary Disks Eject More Mass Than They Retain
Amir Siraj, Abraham Loeb
If interstellar objects originate in protoplanetary disks, they can be used to calibrate the fraction of mass that such disks eject. The discoveries of interstellar objects 1I/`Oum…
Intelligent Responses to Our Technological Signals Will Not Arrive In Fewer Than Three Millennia
Amir Siraj, Abraham Loeb
What is the chance we start a conversation with another civilization like our own? Our technological society produced signals that could be received by other extraterrestrial civil…
Reply to Desch et al. (2021) on "Breakup of a long-period comet as the origin of the dinosaur extinction"
Amir Siraj, Abraham Loeb
We reply to criticisms by Desch et al. (2021) regarding our Scientific Reports paper, "Breakup of a long-period comet as the origin of the dinosaur extinction." The background impa…
Explaining Neptune's Eccentricity
Amir Siraj, Abraham Loeb
Early migration damped Neptune's eccentricity. Here, we assume that the damped value was much smaller than the value observed today, and show that the closest flyby of $\sim 0.1 \;…
Eliminating the Remaining Window for Primordial Black Holes as Dark Matter from the Dynamics of the Cold Kuiper Belt
Amir Siraj, Abraham Loeb
The nature of dark matter (DM) is unknown. One compelling possibility is DM being composed of primordial black holes (PBHs), given the tight limits on some types of elementary part…
The Mass Budget Necessary to Explain `Oumuamua as a Nitrogen Iceberg
Amir Siraj, Abraham Loeb
Recently, a nitrogen iceberg was proposed as a possible origin for the first interstellar object, 1I/2017 U1, also known as `Oumuamua. Here, we show that the mass budget in exo-Plu…
Breakup of a Long-Period Comet as the Origin of the Dinosaur Extinction
Amir Siraj, Abraham Loeb
The origin of the Chicxulub impactor, which is attributed as the cause of the K/T mass extinction event, is an unsolved puzzle. The background impact rates of main-belt asteroids a…
The Copernican Principle Rules Out BLC1 as a Technological Radio Signal from the Alpha Centauri System
Amir Siraj, Abraham Loeb
Without evidence for occupying a special time or location, we should not assume that we inhabit privileged circumstances in the Universe. As a result, within the context of all Ear…