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%%% ERRATA FOR DRAGAN HUTERER'S TEXTBOOK "A COURSE IN COSMOLOGY: FROM TEHORY TO PRACTICE
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CHAPTER 2:

- Sec 2.3.1 (p. 20): coordinates (r, phi) are polar, not cylindrical (thanks
  Kaili Cao)

- In Eq (2.18), the radial term should not be dr^2 / (1-kappa*r^2), but rather
  dr^2 / (1-k*r^2), where k = kappa/R0^2, and is dimensionful (while kappa =
  +/-1 or 0 is dimensionless). Then Eq. (2.20) will have factors of the radius of curvature R_0
  multiplying the sin/sinh, and the latter's arguments will be divided by R_0,
  thus matching Eq (2.16), and (3.60). (thanks Jin Lee)

- p. 32, Eq (2.49): the critical density in the last line should be 1.053e10
  h^2 eV/m^3, not 1.053e10 eV^4.


CHAPTER 3:

- below Eq (3.15) on p. 44, it should say "where n is the mean number density
  of gas particles" (not mass). (thanks Jin Lee)

- the first two lines in Eq (3.40) should have a plus sign before the rho_K
  terms, not minus; this way they are consistent with Eq (3.8) and the rest of
  the definitions. (thanks Jin Lee)

- the last term in Eq (3.53) should have 2+q_0, not 1+q_0. This also
  propagates to Eq (3.55) (but not to Eq (3.56)!). (thanks Jin Lee and
  Kaili Cao)

- p58: in Eq (3.61), there should be a sinh, not sin, in the definition of
  comoving distance as written. Then, in the argument just below, a
  positive-curvature (kappa>0) universe corresponds to a *negative* Omega_k, leading to
  an imaginary square root, and where sinh(ix) = i*sin(x) saves the
  day. (thanks Jin Lee)

CHAPTER 4:

- in the second line of the last paragraph on p. 71 (just before Eq (4.1)), I
  define the density of states in phase space as d^6 N/(d^3 p d^3 x). It
  should read d^6 N_states/(d^3 p d^3 x) to be consistent with Eqn (4.1). N is
  reserved for the density of particles in phase space. (thanks Jin Lee)

- In Fig 4.1 for the horizontal scale for time the last tick should read 10^2
instead of 10^-2; this typo has been introduced by the publisher. (thanks
David Weinberg)

- In Box 4.1 (p. 74), there are two factors of two that cancel out: 1) only
  particles whose v\cdot n is of a given sign (say positive) contribute (so
  the overall values should be 2x smaller; same result is obtained by
  averaging cos^2(theta)*sin(theta) over 0 to pi/2, rather than 0 to pi), but
  2) the collions are elastic, which means the imparted momentum is 2*p_perp
  of a particle. The final result is correct. (thanks Kaili Cao)

- In Eq (4.16), it would be clearer to just omit the integral limits for
  integrals over d^3p (hthanks Kaili Cao).  

CHAPTER 8:

- Eqs (8.2) and (8.3) should have the curvature parameter k and not kappa, to
  match Eq (2.51) [since we don't have the curvature radius R_0 here]. (thanks
  Jin Lee)

CHAPTER 9:

- p.189 (Boxed text) Only scales *larger than Jeans length* grow at same rate.
  (thanks Alan Heavens)

- p. 193, Eq 9.53: should have the additional 1/V term on the rhs. This is because
  <delta^2>, P(k), and the Dirac delta function all have units of volume or,
  equivalently, because of our Fourier-transform convention.
  (thanks Peter Espenshade)

- p. 203, just below Eq (9.67), it should say "direction-independent" and not
  "redshift-independent" [since \spar and \sperp are of course redshift-dependent].

- In Fig 9.6 (n_s-4) should be together, in the exponent of k (typo introduced by publisher)

CHAPTER 10:

- Fig 10.7 (MCMC): In the very last panel, weight should be 1, not 4 (the
  weight resets once the new model is accepted and one moves to it).

CHAPTER 11:

- Sec 11.1: should use L_{\odot, B} consistently (rather than L_\odot), since
  the former is non-negligibly smaller than the latter. (thanks Kaili Cao)

CHAPTER 12:

- penultimate paragraph in the Chapter: should say "something like a hundred
  billion years", not light-years (thanks Kaili Cao)

CHAPTER 13:

- Sec 13.3.3, when talking about the value of the sound horizon for our
  fiducial cosmology: rs should be about 100 (more precisely 98) h^{-1}Mpc, not
  110. The previous calculation incorrectly ignored the relativistic-neutrino contribution
  to radiation content in H(z). [However I now get l_peak to be about 300, not 270, so even
  further than the true value of about 220.]

- Sec 13.5, 2nd par: it's more clear to say " Only the polarizations
  perpendicular to the **outgoing** [nb. not incoming] direction of motion 
  survive in the outgoing wave,..." (thanks Kaili Cao) 

- Fig 13.15: labels for fNL=\pm 50000 and \pm 500 are swapped around (you can
  really only notice this in the color-plates version of the Figure): the two
  ovals on the left side of the Figure should be fNL = \pm 5000, while the two
  on the right should be  fNL = \pm 500.  

- Eqs 13.83: The first term on the rhs of each line of this equation should be
  Q instead of U (thanks Bernadita Ried)

CHAPTER 14:

- Below Eq (14.15):  It might be better to write |\theta_-|, since \theta_- is
  negative. (thanks Kaili Cao)

APPENDIX B:

- p. 402: units of G should be  m^3/kg/s^2, not  m^3/kg/m^2 (thanks Jin Lee)

- p. 402: units of k_B should be just J/K.

- p. 402: electron mass should of course be 511 keV, not 511 MeV. (thanks Jin Lee)