Is it possible to fill an array with row numbers which match a certain criteria without looping?

I would like to fill an array in VBA with the row numbers of only rows which meet a certain criteria. I would like the fastest method possible (for example, something like RowArray = index(valRange=valMatch).row)

Below is the code for the (slow) range loop.

Current Code

Sub get_row_numbers()

Dim RowArray() As Long
Dim valRange As Range
Dim valMatch As String

Set valRange = ActiveSheet.Range("A1:A11")
valMatch = "aa"
ReDim RowArray(WorksheetFunction.CountIf(valRange, valMatch) - 1)

For Each c In valRange
    If c.Value = valMatch Then RowArray(x) = c.Row: x = x + 1
Next c    
End Sub