Ahir Bhairav is a Hindustani classical raga

Ahir Bhairav is a Hindustani
classical
raga . It is a mixture of Bhairav and
the
ancient but now rare raga Ahiri or
Abhiri,
[1] or perhaps a mixture of Bhairav
and
Kafi .[2]
Theory
Arohana and avarohana
Arohana
S r G m P D n S'
Avarohana
S' n D P m G r S
Key:
S, R, m, P, D, N: shuddha (natural);
r, g, d, n : komal (flat);
M: teevra (sharp)
Pa and Sa are sometimes avoided
in
ascending [Arohan].. The descend
can be
direct, but is often expressed as S'
n D P
m, G m Gr ~ S with a slight
oscillation on
komal re to express the character
of
Bhairav [1]
Vadi and samavadi
Vadi
ma
Samavadi
Sa
But Ga, Pa and Dha are also
frequently
sustained.
Pakad or Chalan
S, r G M, G M r, ṇ Ḍ, ṇ r S
| komal Ni, shuddha Dha, komal
Ni, komal
Re, Sa | is the most characteristic
run,
where the Ni and Dha belong to the
lower octave and the Re and Sa are
from
the middle octave. There is typically
some
andolan/oscillation at the flattened
second (komal Re).
Organization and relationships
Also there may be impressions of
Kafi, the
image of Ahir Bhairav is easily
maintained
with the characteristic passage ṇ Ḍ
ṇ/r~ S
[1] Specially the characteristic
Bhairav
andolan (oscillation) on komal re.
Sometimes shuddha Ni is used in
the
lower octave to emphazise the
Bhairav
character. [3]
The Carnatic music equivalent to
this raga
is Chakravakam.
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Behavior
Ahir Bhairav is typical uttarang
raga, which
means emphasis is on the upper
tetrachord.
Samay (Time)
The second Prahar of the morning,
around
6 - 9 AM.