workshop das - 2018 · observing hercules x-1 with xmm-newton m. castro, m. kuhnel, j. wilms, j....

Workshop DAS - 2018

Manuel Castro

FAPESP’s BEPE fellowship, process: #2017/00968-6

May 8, 2018

Manuel Castro Workshop DAS - 2018

Observing Hercules X-1 withXMM-Newton

M. Castro, M. Kuhnel, J. Wilms, J. Braga, R.Staubert

M. Castro, M. Kuhnel, J. Wilms, J. Braga, R. Staubert Observing Hercules X-1 with XMM-Newton

Her X-1

Characteristics

I Neutron star: 1.23-s period.

I Binary system: 1.7-d period.I Accretion disk: 35-d cycle.

I High states: main-on andshort-on

I Low states.Endo et al. (2000)


35-d cycle

J. Wilms et al., A015 proposal

Kuster et al. (2005)


Observing Her X-1 with XMM

I Her X-1 observed during 4 epochs.

I EPIC and RGS data.

I Before, during and after the turn-on.


701601501301

57619.057618.557618.057617.557617.057616.557616.0

0.08

0.06

0.04

0.02

0

-0.02

-0.04

600

500

400

300

200

100

time (MJD)

BAT

rate

(counts

s−1cm

−2)

EPIC

rate

(counts

s −1)


Modelling the broad-band spectra


RGS spectra of Her X-1

10

1

0.1

0.40.60.811.21.62

7015

0

-56015

0

-55015

0

-5301

353025201510

5

0

-5

×10−3Photo

nscm

−2s−

1A

−1

Energy (keV)

χχ

χ

λ(A)

χ

Looking at the spectrum closer


SIXTE simulations

M. Castro, M. Ortel, J. Wilms, J. Braga

M. Castro, M. Ortel, J. Wilms, J. Braga SIXTE simulations

SIXTE Simulations

I Photon generation (photogen).

I Photon imaging (comaimg).

I Photon detection (comadet).

I Reconstruction (comarecon).

Mirjam’s diploma thesis, 2013.


https://www.sternwarte.uni-erlangen.de/research/sixte/index.php


Photon generation


Photon imaging

I Open or close mask-element.

I Shadowgram.


Photon detection

Mirjam’s diploma thesis, 2013.


Reconstruction

I Correlation.

I FFT.

I Backprojection.


Bibliography

Endo, T., Nagase, F. & Mihara, T. Publ. Astron. Soc. Japan, 52(2000):223.

Kuster, M., Wilms, J., Staubert, R., Heindl, W.A., Rothschild, R.E., Shakura,N.I. & Postnov, K.A. Astron. Astrophys., 443(2005):753.


workshop das - 2018 · observing hercules x-1 with xmm-newton m. castro, m. kuhnel, j. wilms, j....

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