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)

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

35-d cycle

J. Wilms et al., A015 proposal

Kuster et al. (2005)

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

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.

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

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)

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

Modelling the broad-band spectra

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

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

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

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

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

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

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

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

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

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

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

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.

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

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

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

Photon generation

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

Photon imaging

I Open or close mask-element.

I Shadowgram.

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

Photon detection

Mirjam’s diploma thesis, 2013.

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

Photon detection

Mirjam’s diploma thesis, 2013.

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

Photon detection

Mirjam’s diploma thesis, 2013.

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

Reconstruction

I Correlation.

I FFT.

I Backprojection.

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

Reconstruction

I Correlation.

I FFT.

I Backprojection.

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

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.

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