WEBVTT FILE 1 00:00:01.040 --> 00:00:04.000 [slate] 2 00:00:04.000 --> 00:00:08.000 [slate] 3 00:00:08.000 --> 00:00:12.000 [slate] 4 00:00:12.000 --> 00:00:16.000 But there are two other parameters that we could look at if we only had 5 00:00:16.000 --> 00:00:20.000 the tools to do that. And those have to do with the polarization of 6 00:00:20.000 --> 00:00:24.000 the degree of polarization and the position 7 00:00:24.000 --> 00:00:28.000 angle. The angle associated with the polarization. So 8 00:00:28.000 --> 00:00:32.000 by doing this mission we’re opening up two more degrees 9 00:00:32.000 --> 00:00:36.000 of freedom to be able to try to understand how are 10 00:00:36.000 --> 00:00:40.000 the x-rays produced, what are the models. We have to be able to predict 11 00:00:40.000 --> 00:00:44.000 the polarization that we will turn out to measure. So it’s really exciting. 12 00:00:44.000 --> 00:00:48.000 [slate] 13 00:00:48.000 --> 00:00:52.000 [slate] Our science 14 00:00:52.000 --> 00:00:56.000 group has studied, we have seven different teams of studying 15 00:00:56.000 --> 00:01:00.000 different classes. So for example the 16 00:01:00.000 --> 00:01:04.000 radio pulsars, supernova remnants 17 00:01:04.000 --> 00:01:08.000 etcetera. And so we have, we’re going to be looking at seven different 18 00:01:08.000 --> 00:01:12.000 classes and several examples of those classes. 19 00:01:12.000 --> 00:01:16.000 So that we get a good preliminary survey of what polarization 20 00:01:16.000 --> 00:01:20.000 is out there. [slate] 21 00:01:20.000 --> 00:01:24.000 [slate] 22 00:01:24.000 --> 00:01:28.000 You say “well I’m not interested in that,” you know maybe polarization 23 00:01:28.000 --> 00:01:32.000 might be interesting. Maybe it won’t be. Let’s wait and see what some mission 24 00:01:32.000 --> 00:01:36.000 tells us. So IXPE is the "let’s wait and see" what some mission 25 00:01:36.000 --> 00:01:40.000 tells us finally. 26 00:01:40.000 --> 00:01:44.000 [slate] 27 00:01:44.000 --> 00:01:48.000 I look at IXPE as being the 28 00:01:48.000 --> 00:01:52.000 first real mission that has capability of measuring 29 00:01:52.000 --> 00:01:56.000 polarization to the reasonable degree of accuracy 30 00:01:56.000 --> 00:02:00.000 so that we can look at 31 00:02:00.000 --> 00:02:04.000 dozens to maybe a hundred different sources and really look at different classes 32 00:02:04.000 --> 00:02:08.000 and try to understand how big a role it’s playing. 33 00:02:08.000 --> 00:04:17.813 [slate for associated b-roll]