Question: Which of the authors of "Welcome to the Universe: An Astrophysical Tour" advocated for the Doomsday Argument?

Context paragraphs:
Self-Indication Assumption Doomsday argument rebuttal: Self-Indication Assumption Doomsday argument rebuttal

Cosmological argument: In natural theology, a cosmological argument is an argument in which the existence of a unique being, generally seen as some kind of god or demiurge is deduced or inferred from facts or alleged facts concerning causation, change, motion, contingency, or finitude in respect of the universe as a whole or processes within it.  It is traditionally known as an argument from universal causation, an argument from first cause, or the causal argument.  Whichever term is employed, there are three basic variants of the argument, each with subtle yet important distinctions: the arguments from "in causa" (causality), "in esse" (essentiality), and "in fieri" (becoming).

Astrophysical plasma: An astrophysical plasma is a plasma (a highly ionized gas) whose physical properties are studied as part of astrophysics.  Much of the baryonic matter of the universe is thought to consist of plasma, a state of matter in which atoms and molecules are so hot, that they have ionized by breaking up into their constituent parts, negatively charged electrons and positively charged ions. Because the particles are charged, they are strongly influenced by electromagnetic forces, that is, by magnetic and electric fields.  All astrophysical plasmas are likely influenced by magnetic fields.

Self-referencing doomsday argument rebuttal: Self-referencing doomsday argument rebuttals attempt to refute the Doomsday argument (that there is a credible link between the brevity of the human race's existence and its expected extinction) by applying the same reasoning to the lifetime of the Doomsday argument (DA) itself.

Timothy Chambers: Timothy Chambers is a philosopher who has written a number of articles which have appeared in the journals "Mind" (2000, 2001), the "Monist" (1998), "Philosophy" (2001), the "Aristotelian Society Proceedings"(2000), and "Ratio" (1999).  His research interests include Hilary Putnam, time travel, the Ontological Argument, the Doomsday Argument and the semantics of vagueness.  His work on Putnam included a logical formula—the Chambers Conditional—which figures in Crispin Wright's recent work on vagueness.

Welcome to the Universe: Welcome to the Universe: An Astrophysical Tour is a popular science book by Neil deGrasse Tyson, Michael A. Strauss, and J. Richard Gott, based on an introductory astrophysics course they co-taught at Princeton University.  The book was published by the Princeton University Press on September 20, 2016.

Welcome to the Universe Tour: The Welcome to the Universe Tour was a concert tour by American rock band Thirty Seconds to Mars, in support of their second studio album "A Beautiful Lie" (2005).  Presenting a series of inexpensive concerts for music fans, the concert tour was announced in August 2006 as a part of the MTV2 $2Bill tour.  The Welcome to the Universe Tour began on October 17, 2006 in Minneapolis, Minnesota and ended on November 25, 2006 in Los Angeles, California.  The setlist encompassed songs from their first two studio albums, "30 Seconds to Mars" and "A Beautiful Lie".

Sołtan argument: The Sołtan argument is an astrophysical theory outlined in 1982 by Polish astronomer Andrzej Sołtan.  It maintains that if quasars were powered by accretion onto a supermassive black hole, then such supermassive black holes must exist in our local universe as "dead" quasars.

J. Richard Gott: John Richard Gott III (born February 8, 1947 in Louisville, Kentucky) is a professor of astrophysical sciences at Princeton University.  He is known for developing and advocating two cosmological theories: Time travel and the Doomsday argument.

Doomsday argument: The Doomsday argument (DA) is a probabilistic argument that claims to predict the number of future members of the human species given an estimate of the total number of humans born so far.  Simply put, it says that supposing that all humans are born in a random order, chances are that any one human is born roughly in the middle.

Supporting paragraphs: Welcome to the Universe J. Richard Gott
Answer: J. Richard Gott