def test_small_star():
from batman import _rsky
m_star = 0.151
r_star = 0.189
period = 0.4626413
t0 = 0.2
b = 0.5
ecc = 0.1
omega = 0.1
t = np.linspace(0, period, 500)
orbit = KeplerianOrbit(
r_star=r_star, m_star=m_star,
period=period, t0=t0, b=b,
ecc=ecc, omega=omega)
a = orbit.a.eval()
incl = orbit.incl.eval()
r_batman = _rsky._rsky(t, t0, period, a, incl, ecc, omega, 1, 1)
m = r_batman < 100.0
assert m.sum() > 0
func = theano.function([], orbit.get_relative_position(t))
x, y, z = func()
r = np.sqrt(x**2 + y**2)
# Make sure that the in-transit impact parameter matches batman
utt.assert_allclose(r_batman[m], r[m], atol=2e-5)
def test_small_star():
from batman import _rsky
m_star = 0.151
r_star = 0.189
period = 0.4626413
t0 = 0.2
b = 0.5
ecc = 0.1
omega = 0.1
t = np.linspace(0, period, 500)
orbit = KeplerianOrbit(
r_star=r_star,
m_star=m_star,
period=period,
t0=t0,
b=b,
ecc=ecc,
omega=omega,
)
a = orbit.a.eval()
incl = orbit.incl.eval()
r_batman = _rsky._rsky(t, t0, period, a, incl, ecc, omega, 1, 1)
m = r_batman < 100.0
assert m.sum() > 0
func = theano.function([], orbit.get_relative_position(t))
x, y, z = func()
r = np.sqrt(x**2 + y**2)
# Make sure that the in-transit impact parameter matches batman
utt.assert_allclose(r_batman[m], r[m], atol=2e-5)
def test_sky_coords():
from batman import _rsky
t = np.linspace(-100, 100, 1000)
t0, period, a, e, omega, incl = (x.flatten() for x in np.meshgrid(
np.linspace(-5.0, 5.0, 2),
np.exp(np.linspace(np.log(5.0), np.log(50.0), 3)),
np.linspace(50.0, 100.0, 2),
np.linspace(0.0, 0.9, 5),
np.linspace(-np.pi, np.pi, 3),
np.arccos(np.linspace(0, 1, 5)[:-1]),
))
r_batman = np.empty((len(t), len(t0)))
for i in range(len(t0)):
r_batman[:, i] = _rsky._rsky(t, t0[i], period[i], a[i], incl[i], e[i],
omega[i], 1, 1)
m = r_batman < 100.0
assert m.sum() > 0
orbit = KeplerianOrbit(period=period,
a=a,
t0=t0,
ecc=e,
omega=omega,
incl=incl,
tol=1e-8,
maxiter=5000)
func = theano.function([], orbit.get_relative_position(t))
x, y, z = func()
r = np.sqrt(x**2 + y**2)
# Make sure that the in-transit impact parameter matches batman
utt.assert_allclose(r_batman[m], r[m], atol=2e-5)
# In-transit should correspond to negative z in our parameterization
assert np.all(z[m] < 0)
# Therefore, when batman doesn't see a transit we shouldn't be transiting
no_transit = z[~m] > 0
no_transit |= r[~m] > 2
assert np.all(no_transit)
def test_sky_coords():
from batman import _rsky
t = np.linspace(-100, 100, 1000)
t0, period, a, e, omega, incl = (x.flatten() for x in np.meshgrid(
np.linspace(-5.0, 5.0, 2),
np.exp(np.linspace(np.log(5.0), np.log(50.0), 3)),
np.linspace(50.0, 100.0, 2),
np.linspace(0.0, 0.9, 5),
np.linspace(-np.pi, np.pi, 3),
np.arccos(np.linspace(0, 1, 5)[:-1]),
))
r_batman = np.empty((len(t), len(t0)))
for i in range(len(t0)):
r_batman[:, i] = _rsky._rsky(t, t0[i], period[i], a[i],
incl[i], e[i], omega[i], 1, 1)
m = r_batman < 100.0
assert m.sum() > 0
orbit = KeplerianOrbit(
period=period, a=a, t0=t0, ecc=e, omega=omega, incl=incl)
func = theano.function([], orbit.get_relative_position(t))
x, y, z = func()
r = np.sqrt(x**2 + y**2)
# Make sure that the in-transit impact parameter matches batman
utt.assert_allclose(r_batman[m], r[m], atol=2e-5)
# In-transit should correspond to negative z in our parameterization
assert np.all(z[m] > 0)
# Therefore, when batman doesn't see a transit we shouldn't be transiting
no_transit = z[~m] < 0
no_transit |= r[~m] > 2
assert np.all(no_transit)
